Abantiades hyalinatus
 - Abantiades hyalinatus (Herrich-Schäffer, 1855) [ACCEPTED SPECIES 272972:BSF7N nidx=null]
 + Abantiades hyalinatus (Herrich-Schäffer, [1853]) [ACCEPTED SPECIES 276829:8J8K nidx=null]
Abichia
 - Abichia (Gemmellaro, 1887) [SYNONYM GENUS 272972:BSVSS nidx=null parent=BSVSV]
 + Abichia Andrusov, 1907 [SYNONYM GENUS 276829:CSC8Q nidx=null parent=C3MCF]
Abichites
 - Abichites Shevyrev, 1965 [ACCEPTED GENUS 272972:BSHFW nidx=null]
 + Abichites [ACCEPTED GENUS 276829:BXFSZ nidx=null]
Abrekites
 - Abrekites Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSHFY nidx=null]
 + Abrekites [ACCEPTED GENUS 276829:BXFTN nidx=null]
Abrytusites
 - Abrytusites Nikolov & Brekoviski, 1969 [ACCEPTED GENUS 272972:BSHFZ nidx=null]
 + Abrytusites [ACCEPTED GENUS 276829:BXFTZ nidx=null]
Acanthinites
 - Acanthinites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSHG4 nidx=null]
 + Acanthinites [ACCEPTED GENUS 276829:BXFYK nidx=null]
Acanthoceras
 - Acanthoceras Neumayr, 1875 [ACCEPTED GENUS 272972:BSG6J nidx=null]
 + Acanthoceras [ACCEPTED GENUS 276829:BVJWW nidx=null]
Acanthocerataceae
 - Acanthocerataceae de Grossouvre, 1894 [ACCEPTED SUPERFAMILY 272972:BSFPK nidx=null]
 + Acanthocerataceae [ACCEPTED SUPERFAMILY 276829:BTZ8R nidx=null]
Acanthoceratidae
 - Acanthoceratidae Grossouvre, 1894 [ACCEPTED FAMILY 272972:BSGX7 nidx=null]
 + Acanthoceratidae [ACCEPTED FAMILY 276829:BWY5G nidx=null]
Acanthoclymenia
 - Acanthoclymenia Hyatt, 1900 [ACCEPTED GENUS 272972:BSHG6 nidx=null]
 + Acanthoclymenia [ACCEPTED GENUS 276829:BXFZH nidx=null]
Acanthoclymeniidae
 - Acanthoclymeniidae Schindewolf, 1955 [ACCEPTED FAMILY 272972:BSGX8 nidx=null]
 + Acanthoclymeniidae [ACCEPTED FAMILY 276829:BWY5M nidx=null]
Acanthodiscus
 - Acanthodiscus Uhlig, 1905 [ACCEPTED GENUS 272972:BSG6L nidx=null]
 + Acanthodiscus [ACCEPTED GENUS 276829:BVJXX nidx=null]
 + Acanthodiscus [SYNONYM GENUS 276829:BVJXY nidx=null parent=BVGJ6]
 + Acanthodiscus [ACCEPTED SUBGENUS 276829:BVJXZ nidx=null]
 + Acanthodiscus MacCallum, 1918 () [SYNONYM GENUS 276829:BVJY2 nidx=null parent=C472Y]
 + Acanthodiscus MacCallum, 1916 () [SYNONYM GENUS 276829:BVJY3 nidx=null parent=BYT9P]
Acanthodrepanites
 - Acanthodrepanites Tozer, 1994 [ACCEPTED GENUS 272972:BSHG8 nidx=null]
 + Acanthodrepanites [ACCEPTED GENUS 276829:BXG2J nidx=null]
Acanthohoplites
 - Acanthohoplites Sinzow, 1908 [ACCEPTED GENUS 272972:BSHG9 nidx=null]
 + Acanthohoplites [ACCEPTED GENUS 276829:BXG2Y nidx=null]
Acantholytoceras
 - Acantholytoceras Spath, 1932 [ACCEPTED GENUS 272972:BSHGC nidx=null]
 + Acantholytoceras [ACCEPTED GENUS 276829:BXG37 nidx=null]
Acanthopleuroceras
 - Acanthopleuroceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHGF nidx=null]
 + Acanthopleuroceras [ACCEPTED GENUS 276829:BXG3S nidx=null]
Acanthoptychoceras
 - Acanthoptychoceras Manolov, 1962 [ACCEPTED GENUS 272972:BSHGG nidx=null]
 + Acanthoptychoceras [ACCEPTED GENUS 276829:BXG3Z nidx=null]
Acanthoscaphites
 - Acanthoscaphites Nowak, 1911 [ACCEPTED GENUS 272972:BSHGH nidx=null]
 + Acanthoscaphites [ACCEPTED GENUS 276829:BXG4B nidx=null]
Acanthothetidites
 - Acanthothetidites Tatzreiter, 1980 [ACCEPTED GENUS 272972:BSHGJ nidx=null]
 + Acanthothetidites [ACCEPTED GENUS 276829:BXG4S nidx=null]
Acanthotropites
 - Acanthotropites Tozer, 1994 [ACCEPTED GENUS 272972:BSHGK nidx=null]
 + Acanthotropites [ACCEPTED GENUS 276829:BXG4Z nidx=null]
Achguigites
 - Achguigites Klug, 2002 [ACCEPTED GENUS 272972:BSHGL nidx=null]
 + Achguigites [ACCEPTED GENUS 276829:BXG7Z nidx=null]
Aconeceras
 - Aconeceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSHGP nidx=null]
 + Aconeceras [ACCEPTED GENUS 276829:BXGBY nidx=null]
Acontia (Acontia) opalinoides
 - Acontia (Acontia) opalinoides Guenée, 1852 [ACCEPTED SPECIES 272972:BJGWJ nidx=null]
 + Acontia (Acontia) opalinoides Guenée, 1852 [ACCEPTED SPECIES 276829:C6Q2V nidx=null]
Acrioceras
 - Acrioceras (Hyatt, 1900) [ACCEPTED GENUS 272972:BSHGT nidx=null]
 + Acrioceras [ACCEPTED GENUS 276829:BXGD6 nidx=null]
 + Acrioceras [ACCEPTED SUBGENUS 276829:BXGD7 nidx=null]
Acrioceratidae
 - Acrioceratidae Vermeulen, 2004 [ACCEPTED FAMILY 272972:BSGX9 nidx=null]
 + Acrioceratidae [ACCEPTED FAMILY 276829:BWY6C nidx=null]
Acrocanites
 - Acrocanites Schindewolf, 1922 [ACCEPTED GENUS 272972:BSHGX nidx=null]
 + Acrocanites [ACCEPTED GENUS 276829:BXGDT nidx=null]
Acrocanitidae
 - Acrocanitidae Korn & Ebbighausen, 2006 [ACCEPTED FAMILY 272972:BSGXB nidx=null]
 + Acrocanitidae [ACCEPTED FAMILY 276829:BWY6F nidx=null]
Acrochordiceras
 - Acrochordiceras (Hyatt, 1877) [ACCEPTED GENUS 272972:BSHGY nidx=null]
 + Acrochordiceras [ACCEPTED GENUS 276829:BXGDZ nidx=null]
Acrochordiceras pustericum
 - Acrochordiceras pustericum (Mojsisovics, 1878) [SYNONYM SPECIES 272972:BSNJX nidx=null parent=9LQN]
 + Acrochordiceras pustericum (Mojsisovics, 1882) [SYNONYM SPECIES 276829:C6TJ8 nidx=null parent=9LQN]
Acrochordiceratidae
 - Acrochordiceratidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSGXC nidx=null]
 + Acrochordiceratidae [ACCEPTED FAMILY 276829:BWY6G nidx=null]
Acroteuthis
 - Acroteuthis Stolley, 1911 [ACCEPTED GENUS 272972:BSVSW nidx=null]
 + Acroteuthis S. S. Berry, 1913 [SYNONYM GENUS 276829:CSD25 nidx=null parent=BXJSV]
Acutimitoceras
 - Acutimitoceras Librovitch, 1957 [ACCEPTED GENUS 272972:BSHH7 nidx=null]
 + Acutimitoceras [ACCEPTED GENUS 276829:BXGKP nidx=null]
Acutomeekoceras
 - Acutomeekoceras Jenks et al., 2010 [ACCEPTED GENUS 272972:BSHH8 nidx=null]
 + Acutomeekoceras [ACCEPTED GENUS 276829:BXGKR nidx=null]
Acyrthosiphon (Acyrthosiphon) papaverinum
 - Acyrthosiphon (Acyrthosiphon) papaverinum [ACCEPTED SPECIES 272972:BSNLN nidx=null]
 + Acyrthosiphon (Acyrthosiphon) papaverinum [ACCEPTED SPECIES 276829:C6Y3Y nidx=null]
Acyrthosiphon (Rhodobium) porosum
 - Acyrthosiphon (Rhodobium) porosum (Sanderson, 1900) [SYNONYM SPECIES 272972:BSNMB nidx=null parent=6WV25]
 + Acyrthosiphon (Rhodobium) porosum (Sanderson, 1900) [SYNONYM SPECIES 276829:C6Y4L nidx=null parent=6WV25]
 + Acyrthosiphon (Rhodobium) porosum (Sanderson, 1900) [SYNONYM SPECIES 276829:C6Y4N nidx=null parent=6WV25]
Adabofoloceras
 - Adabofoloceras Joly, 1977 [ACCEPTED GENUS 272972:BSHH9 nidx=null]
 + Adabofoloceras [ACCEPTED GENUS 276829:BXGKX nidx=null]
Adkinsia
 - Adkinsia Böse, 1928 [ACCEPTED GENUS 272972:BSHHC nidx=null]
 + Adkinsia [ACCEPTED GENUS 276829:BXGNS nidx=null]
Adnethiceras
 - Adnethiceras Wiedmann, 1970 [ACCEPTED GENUS 272972:BSHHD nidx=null]
 + Adnethiceras [ACCEPTED GENUS 276829:BXGP6 nidx=null]
Adrianitaceae
 - Adrianitaceae Schindewolf, 1931 [ACCEPTED SUPERFAMILY 272972:BSGTN nidx=null]
 + Adrianitaceae [ACCEPTED SUPERFAMILY 276829:BWX9H nidx=null]
Adrianites
 - Adrianites Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSHHF nidx=null]
 + Adrianites [ACCEPTED GENUS 276829:BXGPR nidx=null]
Adrianitidae
 - Adrianitidae Schindewolf, 1931 [ACCEPTED FAMILY 272972:BSGXD nidx=null]
 + Adrianitidae [ACCEPTED FAMILY 276829:BWY7G nidx=null]
Adventina
 - Adventina Raf. [SYNONYM UNRANKED 272972:5T5BC nidx=null parent=4LWK]
 + Adventina Raf. [SYNONYM UNRANKED 276829:D7H9S nidx=null parent=4LWK]
Adygeites
 - Adygeites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSHHG nidx=null]
 + Adygeites [ACCEPTED GENUS 276829:BXGQ8 nidx=null]
Adygeitidae
 - Adygeitidae Shevyrev, 1995 [ACCEPTED FAMILY 272972:BSGXF nidx=null]
 + Adygeitidae [ACCEPTED FAMILY 276829:BWY7J nidx=null]
Aegasteroceras
 - Aegasteroceras Spath, 1925 [ACCEPTED GENUS 272972:BSHHH nidx=null]
 + Aegasteroceras [ACCEPTED GENUS 276829:BXGQN nidx=null]
Aegeiceras
 - Aegeiceras Fantini Sestini, 1981 [ACCEPTED GENUS 272972:BSHHJ nidx=null]
 + Aegeiceras [ACCEPTED GENUS 276829:BXGQR nidx=null]
Aegoceras
 - Aegoceras Waagen, 1869 [ACCEPTED GENUS 272972:BSHHK nidx=null]
 + Aegoceras [ACCEPTED GENUS 276829:BXGR9 nidx=null]
 + Aegoceras [ACCEPTED SUBGENUS 276829:BXGRB nidx=null]
Aegocrioceras
 - Aegocrioceras Spath, 1924 [ACCEPTED GENUS 272972:BSHHM nidx=null]
 + Aegocrioceras [ACCEPTED GENUS 276829:BXGRC nidx=null]
Aegocrioceratidae
 - Aegocrioceratidae Vermeulen, 2006 [ACCEPTED FAMILY 272972:BSGXG nidx=null]
 + Aegocrioceratidae [ACCEPTED FAMILY 276829:BWY7Q nidx=null]
Aenetus blackburni
 - Aenetus blackburni Lower, 1892 [SYNONYM SPECIES 272972:BMMNY nidx=null parent=93PZ6]
 + Aenetus blackburni Pfitzner & Gaede, 1933 [SYNONYM SPECIES 276829:93PZ5 nidx=null parent=93PZ6]
Aenetus daphnandri
 - Aenetus daphnandri Scott, 1869 [SYNONYM SPECIES 272972:BSF4X nidx=null parent=93PZF]
 + Aenetus daphnandri Dodd, 1902 [SYNONYM SPECIES 276829:95RCM nidx=null parent=93PZF]
Aenetus daphnandriae
 - Aenetus daphnandriae Scott, 1869 [SYNONYM SPECIES 272972:BSDRW nidx=null parent=93PZF]
 + Aenetus daphnandriae Pfitzner, 1907 [SYNONYM SPECIES 276829:95RCN nidx=null parent=93PZF]
Aenigmatoceras
 - Aenigmatoceras Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSHHN nidx=null]
 + Aenigmatoceras [ACCEPTED GENUS 276829:BXGS5 nidx=null]
Afrolobites
 - Afrolobites Becker & Bockwinkel, 2002 [ACCEPTED GENUS 272972:BSHHR nidx=null]
 + Afrolobites [ACCEPTED GENUS 276829:BXH3Y nidx=null]
Afromaenioceras
 - Afromaenioceras (Göddertz, 1987) [ACCEPTED GENUS 272972:BSHHS nidx=null]
 + Afromaenioceras [ACCEPTED GENUS 276829:BXH48 nidx=null]
Agathiceras
 - Agathiceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSHJ2 nidx=null]
 + Agathiceras [ACCEPTED GENUS 276829:BXH8L nidx=null]
Agathiceratidae
 - Agathiceratidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSGXH nidx=null]
 + Agathiceratidae [ACCEPTED FAMILY 276829:BWY8B nidx=null]
Agathiceratoidea
 - Agathiceratoidea Arthaber, 1911 [ACCEPTED SUPERFAMILY 272972:BSGTP nidx=null]
 + Agathiceratoidea [ACCEPTED SUPERFAMILY 276829:BWX9M nidx=null]
Aghdarbandites
 - Aghdarbandites Krystyn & Tatzreiter, 1991 [ACCEPTED GENUS 272972:BSHJ5 nidx=null]
 + Aghdarbandites [ACCEPTED GENUS 276829:BXH9P nidx=null]
Agoniatitaceae
 - Agoniatitaceae Holzapfel, 1899 [ACCEPTED SUPERFAMILY 272972:BSGTQ nidx=null]
 + Agoniatitaceae [ACCEPTED SUPERFAMILY 276829:BWX9N nidx=null]
Agoniatites
 - Agoniatites (Meek, 1877) [ACCEPTED GENUS 272972:BSHJ7 nidx=null]
 + Agoniatites [ACCEPTED GENUS 276829:BXHBZ nidx=null]
 + Agoniatites [ACCEPTED SUBGENUS 276829:BXHC2 nidx=null]
Agoniatitida
 - Agoniatitida Ruzhencev, 1957 [ACCEPTED ORDER 272972:BSVS3 nidx=null]
 + Agoniatitida Ruchencev, 1957 [ACCEPTED ORDER 276829:CS3WB nidx=null]
Agoniatitidae
 - Agoniatitidae Holzapfel, 1899 [ACCEPTED FAMILY 272972:BSGXJ nidx=null]
 + Agoniatitidae [ACCEPTED FAMILY 276829:BWY8K nidx=null]
Agonum brunneus
 - Agonum brunneus (Letzner, 1852) unavailable name [SYNONYM SPECIES 272972:BFM5K nidx=null parent=664T3]
 + Agonum brunneus (Letzner, 1852) [SYNONYM SPECIES 276829:C7B78 nidx=null parent=664T3]
Aioloceras
 - Aioloceras (Whitehouse, 1926) [ACCEPTED GENUS 272972:BSHJN nidx=null]
 + Aioloceras [ACCEPTED GENUS 276829:BXHFM nidx=null]
Akmilleria
 - Akmilleria Ruzhencev, 1940 [ACCEPTED GENUS 272972:BSHJY nidx=null]
 + Akmilleria [ACCEPTED GENUS 276829:BXHGY nidx=null]
Aktubites
 - Aktubites Ruzhencev, 1955 [ACCEPTED GENUS 272972:BSHK4 nidx=null]
 + Aktubites [ACCEPTED GENUS 276829:BXHHK nidx=null]
Alanites
 - Alanites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSHK5 nidx=null]
 + Alanites [ACCEPTED GENUS 276829:BXHJ6 nidx=null]
Alaoceras
 - Alaoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSHK6 nidx=null]
 + Alaoceras [ACCEPTED GENUS 276829:BXHJM nidx=null]
Albanites
 - Albanites Arthaber, 1909 [ACCEPTED GENUS 272972:BSHK7 nidx=null]
 + Albanites [ACCEPTED GENUS 276829:BXHMD nidx=null]
Albanitidae
 - Albanitidae Tozer, 1994 [ACCEPTED FAMILY 272972:BSGXK nidx=null]
 + Albanitidae [ACCEPTED FAMILY 276829:BWY96 nidx=null]
Aleteceras
 - Aleteceras Whitehouse, 1926 [ACCEPTED GENUS 272972:BSHKF nidx=null]
 + Aleteceras [ACCEPTED GENUS 276829:BXHV8 nidx=null]
Algericeras
 - Algericeras Spath, 1925 [ACCEPTED GENUS 272972:BSHKG nidx=null]
 + Algericeras [ACCEPTED GENUS 276829:BXHXR nidx=null]
Alibashites
 - Alibashites Korn & Ghaderi, 2016 [ACCEPTED GENUS 272972:BSHKH nidx=null]
 + Alibashites [ACCEPTED GENUS 276829:BXHYT nidx=null]
Alkaites
 - Alkaites Balini et al., 2006 [ACCEPTED GENUS 272972:BSHKJ nidx=null]
 + Alkaites [ACCEPTED GENUS 276829:BXJ4W nidx=null]
Alloclionites
 - Alloclionites Spath, 1951 [ACCEPTED GENUS 272972:BSHKS nidx=null]
 + Alloclionites [ACCEPTED GENUS 276829:BXJFD nidx=null]
Allocrioceras
 - Allocrioceras Spath, 1926 [ACCEPTED GENUS 272972:BSHKT nidx=null]
 + Allocrioceras [ACCEPTED GENUS 276829:BXJFS nidx=null]
Almites
 - Almites (Toumansky, 1941) [ACCEPTED GENUS 272972:BSHKY nidx=null]
 + Almites [ACCEPTED GENUS 276829:BXJWP nidx=null]
Alocolytoceras
 - Alocolytoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHL3 nidx=null]
 + Alocolytoceras [ACCEPTED GENUS 276829:BXJX8 nidx=null]
Alpinites
 - Alpinites Bogoslovsky, 1971 [ACCEPTED GENUS 272972:BSHL6 nidx=null]
 + Alpinites [ACCEPTED GENUS 276829:BXKG2 nidx=null]
Alsatites
 - Alsatites Haug, 1894 [ACCEPTED GENUS 272972:BSHL7 nidx=null]
 + Alsatites [ACCEPTED GENUS 276829:BXKHW nidx=null]
Altayites
 - Altayites Korn, 2002 [ACCEPTED GENUS 272972:BSHL8 nidx=null]
 + Altayites [ACCEPTED GENUS 276829:BXKMB nidx=null]
Altudoceras
 - Altudoceras Ruzhencev, 1940 [ACCEPTED GENUS 272972:BSHLC nidx=null]
 + Altudoceras [ACCEPTED GENUS 276829:BXKS6 nidx=null]
Alurites
 - Alurites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSHLF nidx=null]
 + Alurites [ACCEPTED GENUS 276829:BXKSN nidx=null]
Alzadites
 - Alzadites Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSHLG nidx=null]
 + Alzadites [ACCEPTED GENUS 276829:BXKVZ nidx=null]
Amaltheidae
 - Amaltheidae (Hyatt, 1867) [ACCEPTED FAMILY 272972:BSGXL nidx=null]
 + Amaltheidae [ACCEPTED FAMILY 276829:BWYB7 nidx=null]
 + Amaltheidae Dall, 1889 [SYNONYM FAMILY 276829:BWYB8 nidx=null parent=BTPNF]
Amaltheus
 - Amaltheus (de Montfort, 1808) [ACCEPTED GENUS 272972:BSHLH nidx=null]
 + Amaltheus [ACCEPTED GENUS 276829:BXKYL nidx=null]
Amarassites
 - Amarassites Welter, 1914 [ACCEPTED GENUS 272972:BSHLM nidx=null]
 + Amarassites [ACCEPTED GENUS 276829:BXL3D nidx=null]
Amauroceras
 - Amauroceras Buckman, 1913 [ACCEPTED GENUS 272972:BSHLN nidx=null]
 + Amauroceras [ACCEPTED GENUS 276829:BXL4M nidx=null]
Ambites
 - Ambites Waagen, 1895 [ACCEPTED GENUS 272972:BSHLP nidx=null]
 + Ambites [ACCEPTED GENUS 276829:BXL5W nidx=null]
Ambitoides
 - Ambitoides Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSHLQ nidx=null]
 + Ambitoides [ACCEPTED GENUS 276829:BXL5X nidx=null]
Ammonellipsites
 - Ammonellipsites Parkinson, 1822 [ACCEPTED GENUS 272972:BSHLS nidx=null]
 + Ammonellipsites [ACCEPTED GENUS 276829:BXLKP nidx=null]
Ammonites calisto
 - Ammonites calisto (d'Orbigny, 1850) [ACCEPTED SPECIES 272972:BSP8W nidx=null]
 + Ammonites calisto (Zittel, 1868) [SYNONYM SPECIES 276829:C7TWP nidx=null parent=C9XCQ]
Ammonites deshayesi
 - Ammonites deshayesi (d'Orbigny, 1841) [ACCEPTED SPECIES 272972:BSP93 nidx=null]
 + Ammonites deshayesi (Leymerie, 1840) [SYNONYM SPECIES 276829:C7TZC nidx=null parent=CGJRJ]
Ammonites lacunatus
 - Ammonites lacunatus (Dumortier, 1867) [SYNONYM SPECIES 272972:BSP97 nidx=null parent=6592B]
 - Ammonites lacunatus (Buckman, 1842) [ACCEPTED SPECIES 272972:BSP98 nidx=null]
 + Ammonites lacunatus Quendstedt, 1882 [ACCEPTED SPECIES 276829:C7V2X nidx=null]
Ammonites lotharingius
 - Ammonites lotharingius (Reynes, 1850) [ACCEPTED SPECIES 272972:BSP9B nidx=null]
 + Ammonites lotharingius (Reynes, 1879) [SYNONYM SPECIES 276829:C7V3L nidx=null parent=CKFW2]
Ammonoidea
 - Ammonoidea (Zittel, 1884) [ACCEPTED SUBCLASS 272972:NY nidx=null]
 - Ammonoidea (Zittel, 1884) [SYNONYM SUBCLASS 272972:BSFX9 nidx=null parent=NY]
 + Ammonoidea [ACCEPTED ORDER 276829:BV9JB nidx=null]
Ammotibetites
 - Ammotibetites Krystyn, 1982 [ACCEPTED GENUS 272972:BSHLX nidx=null]
 + Ammotibetites [ACCEPTED GENUS 276829:BXLLS nidx=null]
Amoenophyllites
 - Amoenophyllites Chlupac & Turek, 1983 [ACCEPTED GENUS 272972:BSHLY nidx=null]
 + Amoenophyllites [ACCEPTED GENUS 276829:BXLMY nidx=null]
Amphipoea albo
 - Amphipoea albo Tutt [AMBIGUOUS_SYNONYM SPECIES 272972:95TYL nidx=null parent=D4WP]
 + Amphipoea albo Tutt, 1891 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SG nidx=null parent=D4WP]
 + Amphipoea albo Tutt [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SH nidx=null parent=D4WP]
 + Amphipoea albo Heydemann, 1931 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SJ nidx=null parent=66G96]
 + Amphipoea albo Heydemann, 1931 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SK nidx=null parent=92STR]
 + Amphipoea albo Heydemann [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SL nidx=null parent=D4WL]
 + Amphipoea albo Heydemann, 1931 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SM nidx=null parent=D4WL]
 + Amphipoea albo Heydemann, 1931 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SN nidx=null parent=D4WL]
 + Amphipoea albo Heydemann, 1931 [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SP nidx=null parent=D4WL]
 + Amphipoea albo Burrows [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SQ nidx=null parent=D4WG]
 + Amphipoea albo Burrows [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SR nidx=null parent=D4WG]
 + Amphipoea albo Burrows [AMBIGUOUS_SYNONYM SPECIES 276829:CW3SS nidx=null parent=D4WG]
Amphipopanoceras
 - Amphipopanoceras Vovina, 1947 [ACCEPTED GENUS 272972:BSHMC nidx=null]
 + Amphipopanoceras [ACCEPTED GENUS 276829:BXLSG nidx=null]
Amphistephanites
 - Amphistephanites Zakharov, 1978 [ACCEPTED GENUS 272972:BSHMD nidx=null]
 + Amphistephanites [ACCEPTED GENUS 276829:BXLW2 nidx=null]
Anadesmoceras
 - Anadesmoceras Casey, 1954 [ACCEPTED GENUS 272972:BSHMK nidx=null]
 + Anadesmoceras [ACCEPTED GENUS 276829:BXMW7 nidx=null]
Anaflemingites
 - Anaflemingites Kummel & Steele, 1962 [ACCEPTED GENUS 272972:BSHML nidx=null]
 + Anaflemingites [ACCEPTED GENUS 276829:BXN43 nidx=null]
Anagastroplites
 - Anagastroplites Jeletzky, 1980 [ACCEPTED GENUS 272972:BSHMM nidx=null]
 + Anagastroplites [ACCEPTED GENUS 276829:BXN4B nidx=null]
Anagaudryceras
 - Anagaudryceras Shimizu, 1934 [ACCEPTED GENUS 272972:BSHMN nidx=null]
 + Anagaudryceras [ACCEPTED GENUS 276829:BXN4C nidx=null]
Anagymnites
 - Anagymnites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSHMP nidx=null]
 + Anagymnites [ACCEPTED GENUS 276829:BXN62 nidx=null]
Anagymnotoceras
 - Anagymnotoceras McLearn, 1946 [ACCEPTED GENUS 272972:BSHMR nidx=null]
 + Anagymnotoceras [ACCEPTED GENUS 276829:BXN69 nidx=null]
Anahamulina
 - Anahamulina Hyatt, 1900 [ACCEPTED GENUS 272972:BSHMS nidx=null]
 + Anahamulina [ACCEPTED GENUS 276829:BXN6D nidx=null]
Anaklinoceras
 - Anaklinoceras Stephenson, 1941 [ACCEPTED GENUS 272972:BSHMT nidx=null]
 + Anaklinoceras [ACCEPTED GENUS 276829:BXN9S nidx=null]
Analytoceras
 - Analytoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHMV nidx=null]
 + Analytoceras [ACCEPTED GENUS 276829:BXNF7 nidx=null]
Anapuzosia
 - Anapuzosia (Matsumoto, 1954) [SYNONYM GENUS 272972:BSMY4 nidx=null parent=BSMY5]
 + Anapuzosia [ACCEPTED SUBGENUS 276829:C5WNJ nidx=null]
Anarcestaceae
 - Anarcestaceae Steinmann, 1890 [ACCEPTED SUPERFAMILY 272972:BSGTR nidx=null]
 + Anarcestaceae [ACCEPTED SUPERFAMILY 276829:BWXB2 nidx=null]
Anarcestes
 - Anarcestes Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSHMX nidx=null]
 + Anarcestes [ACCEPTED GENUS 276829:BXNLN nidx=null]
Anarcestidae
 - Anarcestidae Steinmann, 1890 [ACCEPTED FAMILY 272972:BSGXM nidx=null]
 + Anarcestidae [ACCEPTED FAMILY 276829:BWYCS nidx=null]
Anasibirites
 - Anasibirites (Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSHMZ nidx=null]
 + Anasibirites [ACCEPTED GENUS 276829:BXNNN nidx=null]
Anasibirites ochotensis
 - Anasibirites ochotensis Bychkov et al., 1976 [SYNONYM SPECIES 272972:BSPC6 nidx=null parent=6YLSB]
 + Anasibirites ochotensis Bytschkov, 1976 [ACCEPTED SPECIES 276829:C82X5 nidx=null]
Anasirenites
 - Anasirenites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSHN3 nidx=null]
 + Anasirenites [ACCEPTED GENUS 276829:BXNP4 nidx=null]
Anatibetites
 - Anatibetites (von Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSHN4 nidx=null]
 + Anatibetites [ACCEPTED GENUS 276829:BXNWC nidx=null]
Anatomites
 - Anatomites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSHN6 nidx=null]
 + Anatomites [ACCEPTED GENUS 276829:BXP3F nidx=null]
Anatropites
 - Anatropites (Mojsisovics, 1893) [SYNONYM GENUS 272972:BSMY6 nidx=null parent=BSMY7]
 + Anatropites [ACCEPTED SUBGENUS 276829:C5WNQ nidx=null]
Anatsabites
 - Anatsabites Ruzhencev, 1957 [ACCEPTED GENUS 272972:BSHN9 nidx=null]
 + Anatsabites [ACCEPTED GENUS 276829:BXP3M nidx=null]
Anawasatchites
 - Anawasatchites McLearn, 1945 [ACCEPTED GENUS 272972:BSHNB nidx=null]
 + Anawasatchites [ACCEPTED GENUS 276829:BXP7K nidx=null]
Anaxenaspis
 - Anaxenaspis Kiparisova, 1956 [ACCEPTED GENUS 272972:BSHNC nidx=null]
 + Anaxenaspis [ACCEPTED GENUS 276829:BXP7S nidx=null]
Ancyloceras
 - Ancyloceras (d'Orbigny, 1842) [ACCEPTED GENUS 272972:BSHNJ nidx=null]
 + Ancyloceras [ACCEPTED GENUS 276829:BXPRV nidx=null]
Ancylocerataceae
 - Ancylocerataceae Gill, 1871 [ACCEPTED SUPERFAMILY 272972:BSGTS nidx=null]
 + Ancylocerataceae [ACCEPTED SUPERFAMILY 276829:BWXB3 nidx=null]
Ancyloceratidae
 - Ancyloceratidae Gill, 1871 [ACCEPTED FAMILY 272972:BSGXN nidx=null]
 + Ancyloceratidae [ACCEPTED FAMILY 276829:BWYD3 nidx=null]
Anderssonoceras
 - Anderssonoceras Grabau, 1924 [ACCEPTED GENUS 272972:BSHNN nidx=null]
 + Anderssonoceras [ACCEPTED GENUS 276829:BXQ2N nidx=null]
Anderssonoceratidae
 - Anderssonoceratidae Ruzhencev, 1959 [ACCEPTED FAMILY 272972:BSGXP nidx=null]
 + Anderssonoceratidae [ACCEPTED FAMILY 276829:BWYD6 nidx=null]
Andicoeloceras
 - Andicoeloceras Hillebrandt, 2006 [ACCEPTED GENUS 272972:BSHNP nidx=null]
 + Andicoeloceras [ACCEPTED GENUS 276829:BXQ2X nidx=null]
Andidiscus
 - Andidiscus Hillebrandt, 2006 [ACCEPTED GENUS 272972:BSHNQ nidx=null]
 + Andidiscus [ACCEPTED GENUS 276829:BXQ2Y nidx=null]
Andrianovia
 - Andrianovia Boardman et al., 1994 [ACCEPTED GENUS 272972:BSHNV nidx=null]
 + Andrianovia [ACCEPTED GENUS 276829:BXQDB nidx=null]
Androgynoceras
 - Androgynoceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSHNW nidx=null]
 + Androgynoceras [ACCEPTED GENUS 276829:BXQG2 nidx=null]
Anetoceras
 - Anetoceras Schindewolf, 1934 [ACCEPTED GENUS 272972:BSHNX nidx=null]
 + Anetoceras [ACCEPTED GENUS 276829:BXQM8 nidx=null]
Anfuceras
 - Anfuceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSHP4 nidx=null]
 + Anfuceras [ACCEPTED GENUS 276829:BXQND nidx=null]
Angeloteuthis
 - Angeloteuthis Lang, 1928 [ACCEPTED GENUS 272972:BSHP8 nidx=null]
 + Angeloteuthis [ACCEPTED GENUS 276829:BXQRD nidx=null]
Anglesites
 - Anglesites Delanoy & Busnardo, 2007 [ACCEPTED GENUS 272972:BSHP9 nidx=null]
 + Anglesites [ACCEPTED GENUS 276829:BXQVT nidx=null]
Angulaticeras
 - Angulaticeras (Lange, 1924) [ACCEPTED GENUS 272972:BSHPC nidx=null]
 + Angulaticeras [ACCEPTED GENUS 276829:BXQXF nidx=null]
Anisoceras
 - Anisoceras (Pictet, 1854) [ACCEPTED GENUS 272972:BSHPG nidx=null]
 + Anisoceras [ACCEPTED GENUS 276829:BXR44 nidx=null]
 + Anisoceras Grube, 1856 [SYNONYM GENUS 276829:BXR45 nidx=null parent=B8XW7]
Anisoceratidae
 - Anisoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSGXQ nidx=null]
 + Anisoceratidae [ACCEPTED FAMILY 276829:BWYDL nidx=null]
Anisoramphus
 - Anisoramphus DC. [SYNONYM UNRANKED 272972:5T5TJ nidx=null parent=3VMZ]
 + Anisoramphus DC. [SYNONYM UNRANKED 276829:D7HN8 nidx=null parent=3VMZ]
Ankinatsytes
 - Ankinatsytes Collignon, 1965 [ACCEPTED GENUS 272972:BSHPM nidx=null]
 + Ankinatsytes [ACCEPTED GENUS 276829:BXR6F nidx=null]
Annuloceras
 - Annuloceras Murphy et al., 1995 [ACCEPTED GENUS 272972:BSHPN nidx=null]
 + Annuloceras [ACCEPTED GENUS 276829:BXR8H nidx=null]
Anoecia (Anoecia) fulviabdominalis
 - Anoecia (Anoecia) fulviabdominalis [ACCEPTED SPECIES 272972:B3LYN nidx=null]
 + Anoecia (Anoecia) fulviabdominalis [ACCEPTED SPECIES 276829:C8C32 nidx=null]
Anolcites
 - Anolcites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSHPP nidx=null]
 + Anolcites [ACCEPTED GENUS 276829:BXRBW nidx=null]
Anotoceras
 - Anotoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHPT nidx=null]
 + Anotoceras [ACCEPTED GENUS 276829:BXRG4 nidx=null]
Antegoniatites
 - Antegoniatites Korn et al., 2010 [ACCEPTED GENUS 272972:BSHPW nidx=null]
 + Antegoniatites [ACCEPTED GENUS 276829:BXRHF nidx=null]
Anthracoceras
 - Anthracoceras (Frech, 1899) [ACCEPTED GENUS 272972:BSHPX nidx=null]
 + Anthracoceras [ACCEPTED GENUS 276829:BXRLF nidx=null]
Anthracoceratidae
 - Anthracoceratidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSGXS nidx=null]
 + Anthracoceratidae [ACCEPTED FAMILY 276829:BWYGF nidx=null]
Anthrax binotata
 - Anthrax binotata Meigen & Wiedemann, 1820 [ACCEPTED SPECIES 272972:926WW nidx=null]
 + Anthrax binotata Meigen & Wiedemann, 1820 [ACCEPTED SPECIES 276829:C8JQR nidx=null]
Anticheirina
 - Anticheirina Lacordaire, 1855 [ACCEPTED SUBTRIBE 272972:9JZJW nidx=null]
 + Anticheirina Lacordaire, 1855 [SYNONYM GENUS 276829:BXFMT nidx=null parent=LFL]
Anuites
 - Anuites Andrianov, 1985 [ACCEPTED GENUS 272972:BSHQ2 nidx=null]
 + Anuites [ACCEPTED GENUS 276829:BXRSM nidx=null]
Anuraphis (Macchiatiella) prunicola
 - Anuraphis (Macchiatiella) prunicola (Kaltenbach, 1843) [AMBIGUOUS_SYNONYM SPECIES 272972:BSPJY nidx=null parent=7GLDH]
 + Anuraphis (Macchiatiella) prunicola (Kaltenbach, 1843) [AMBIGUOUS_SYNONYM SPECIES 276829:C8LK7 nidx=null parent=7GLDH]
 + Anuraphis (Macchiatiella) prunicola (Kaltenbach, 1843) [AMBIGUOUS_SYNONYM SPECIES 276829:C8LK9 nidx=null parent=6929D]
Anystidae
 - Anystidae [ACCEPTED FAMILY 272972:6JB nidx=null]
 + Anystidae Oudemans, 1902 [ACCEPTED FAMILY 276829:BTZLB nidx=null]
Anystoidea
 - Anystoidea [ACCEPTED SUPERFAMILY 272972:622XV nidx=null]
 + Anystoidea Oudemans, 1902 [ACCEPTED SUPERFAMILY 276829:BTYL9 nidx=null]
Aphantites
 - Aphantites Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSHQQ nidx=null]
 + Aphantites [ACCEPTED GENUS 276829:BXRY4 nidx=null]
Aphis (Aphis) brachysiphon
 - Aphis (Aphis) brachysiphon [ACCEPTED SPECIES 272972:BJJJB nidx=null]
 + Aphis (Aphis) brachysiphon [ACCEPTED SPECIES 276829:C8ND6 nidx=null]
Aphis (Aphis) bupleuri-sensoriata
 - Aphis (Aphis) bupleuri-sensoriata Bozhko, 1959 [ACCEPTED SPECIES 272972:FDT5 nidx=null]
 + Aphis (Aphis) bupleuri-sensoriata Bozhko, 1959 [ACCEPTED SPECIES 276829:C8ND9 nidx=null]
Aphis (Aphis) cichorea
 - Aphis (Aphis) cichorea [ACCEPTED SPECIES 272972:5VLKC nidx=null]
 + Aphis (Aphis) cichorea [ACCEPTED SPECIES 276829:C8NDG nidx=null]
Aphis (Aphis) cytisorum
 - Aphis (Aphis) cytisorum Hartig, 1841 [ACCEPTED SPECIES 272972:BSPL8 nidx=null]
 + Aphis (Aphis) cytisorum Hartig, 1841 [ACCEPTED SPECIES 276829:C8NDS nidx=null]
Aphis (Aphis) forbesi
 - Aphis (Aphis) forbesi Weed, 1889 [ACCEPTED SPECIES 272972:FDWD nidx=null]
 + Aphis (Aphis) forbesi Weed, 1889 [ACCEPTED SPECIES 276829:C77SH nidx=null]
Aphis (Aphis) gossypii
 - Aphis (Aphis) gossypii Glover, 1877 [ACCEPTED SPECIES 272972:BSG86 nidx=null]
 + Aphis (Aphis) gossypii Glover, 1877 [ACCEPTED SPECIES 276829:BVMY6 nidx=null]
Aphis (Aphis) heraclicola
 - Aphis (Aphis) heraclicola [ACCEPTED SPECIES 272972:FDXJ nidx=null]
 + Aphis (Aphis) heraclicola [ACCEPTED SPECIES 276829:C8NFC nidx=null]
Aphis (Aphis) khrulevae
 - Aphis (Aphis) khrulevae Stekolshchikov & Buga, 2018 [ACCEPTED SPECIES 272972:BSPPT nidx=null]
 + Aphis (Aphis) khrulevae Stekolshchikov & Buga, 2018 [ACCEPTED SPECIES 276829:C8NJ7 nidx=null]
Aphis (Aphis) pseudopaludicola
 - Aphis (Aphis) pseudopaludicola [ACCEPTED SPECIES 272972:BJLRQ nidx=null]
 + Aphis (Aphis) pseudopaludicola [ACCEPTED SPECIES 276829:C8NHK nidx=null]
Aphis (Aphis) rosa-suaveolens
 - Aphis (Aphis) rosa-suaveolens Rafinesque, 1818 [ACCEPTED SPECIES 272972:8QYHN nidx=null]
 + Aphis (Aphis) rosa-suaveolens Rafinesque, 1818 [SYNONYM SPECIES 276829:C8NGD nidx=null parent=C8NGF]
 + Aphis (Aphis) rosa-suaveolens Rafinesque, 1818 [ACCEPTED SPECIES 276829:C8NGF nidx=null]
Aphis (Cerosipha) stachydis
 - Aphis (Cerosipha) stachydis [SYNONYM SPECIES 272972:BSPPX nidx=null parent=BSPPY]
 + Aphis (Cerosipha) stachydis [SYNONYM SPECIES 276829:C8NJ8 nidx=null parent=BSPPY]
Aphis (Medoralis) pomi
 - Aphis (Medoralis) pomi [AMBIGUOUS_SYNONYM SPECIES 272972:BSPMZ nidx=null parent=797VN]
 + Aphis (Medoralis) pomi [AMBIGUOUS_SYNONYM SPECIES 276829:C8NGG nidx=null parent=797VN]
Aphis (Pemphigus) bursaria
 - Aphis (Pemphigus) bursaria Linnaeus, 1758 [SYNONYM SPECIES 272972:BSPRS nidx=null parent=9GT9M]
 + Aphis (Pemphigus) bursaria Linnaeus, 1758 [SYNONYM SPECIES 276829:C8NL8 nidx=null parent=9GT9M]
Aphis (Pergandeida) uvae-ursi
 - Aphis (Pergandeida) uvae-ursi Ossiannilsson, 1959 [SYNONYM SPECIES 272972:BSPQY nidx=null parent=BSPR2]
 + Aphis (Pergandeida) uvae-ursi Ossiannilsson, 1959 [SYNONYM SPECIES 276829:C8NK2 nidx=null parent=BSPR2]
Aplatissa michaeli
 - Aplatissa michaeli Pfitzner, 1914 [SYNONYM SPECIES 272972:BPP2W nidx=null parent=95XH5]
 + Aplatissa michaeli Pfitzner, 1937 [SYNONYM SPECIES 276829:95XH4 nidx=null parent=95XH5]
Aplococeras
 - Aplococeras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHQT nidx=null]
 + Aplococeras [ACCEPTED GENUS 276829:BXS2Q nidx=null]
Aplococeratidae
 - Aplococeratidae Spath, 1951 [ACCEPTED FAMILY 272972:BSGXT nidx=null]
 + Aplococeratidae [ACCEPTED FAMILY 276829:BWYHK nidx=null]
Apoderoceras
 - Apoderoceras Buckman, 1921 [ACCEPTED GENUS 272972:BSHQV nidx=null]
 + Apoderoceras [ACCEPTED GENUS 276829:BXS3S nidx=null]
Appenninoceras
 - Appenninoceras Meister & Dommergues, 2011 [ACCEPTED GENUS 272972:BSHQW nidx=null]
 + Appenninoceras [ACCEPTED GENUS 276829:BXS79 nidx=null]
Appudiceras
 - Appudiceras Whitehouse, 1926 [ACCEPTED GENUS 272972:BSHQX nidx=null]
 + Appudiceras [ACCEPTED GENUS 276829:BXS7C nidx=null]
Arasella
 - Arasella Korn, 2014 [ACCEPTED GENUS 272972:BSHQZ nidx=null]
 + Arasella [ACCEPTED GENUS 276829:BXSCB nidx=null]
Araucanites
 - Araucanites (Westermann & Riccardi) [ACCEPTED GENUS 272972:BSHR3 nidx=null]
 + Araucanites [ACCEPTED GENUS 276829:BXSCH nidx=null]
Araxoceras
 - Araxoceras Ruzhencev, 1959 [ACCEPTED GENUS 272972:BSHR6 nidx=null]
 + Araxoceras [ACCEPTED GENUS 276829:BXSCN nidx=null]
Araxoceras simplex
 - Araxoceras simplex (Zheng & Ma, 1982) [ACCEPTED SPECIES 272972:BSPVX nidx=null]
 + Araxoceras simplex Qin, 1986 [ACCEPTED SPECIES 276829:C8SS5 nidx=null]
Araxoceratidae
 - Araxoceratidae Ruzhencev, 1959 [ACCEPTED FAMILY 272972:BSGXV nidx=null]
 + Araxoceratidae [ACCEPTED FAMILY 276829:BWYJS nidx=null]
Araçuincola laminatus
 - Araçuincola laminatus Piza, 1980 [SYNONYM SPECIES 272972:BTJHC nidx=null parent=3BRQM]
 + Araçuincola laminatus Piza, 1980 [SYNONYM SPECIES 276829:DFC9B nidx=null parent=3BRQM]
Arcanoceras
 - Arcanoceras Ruzhencev, 1965 [ACCEPTED GENUS 272972:BSHR7 nidx=null]
 + Arcanoceras [ACCEPTED GENUS 276829:BXSDN nidx=null]
Arcestaceae
 - Arcestaceae Mojsisovics, 1875 [ACCEPTED SUPERFAMILY 272972:BSFXB nidx=null]
 + Arcestaceae [ACCEPTED SUPERFAMILY 276829:BV9KL nidx=null]
Arcestes
 - Arcestes Suess, 1865 [ACCEPTED GENUS 272972:BSFYD nidx=null]
 + Arcestes [ACCEPTED GENUS 276829:BVB97 nidx=null]
Arcestidae
 - Arcestidae Mojsisovics, 1875 [ACCEPTED FAMILY 272972:BSFXQ nidx=null]
 + Arcestidae [ACCEPTED FAMILY 276829:BV9NY nidx=null]
Archanarcestes
 - Archanarcestes Becker & House, 1994 [ACCEPTED GENUS 272972:BSHRB nidx=null]
 + Archanarcestes [ACCEPTED GENUS 276829:BXSGM nidx=null]
Archboldiceras
 - Archboldiceras Leonova & Shilovsky, 2007 [ACCEPTED GENUS 272972:BSHRC nidx=null]
 + Archboldiceras [ACCEPTED GENUS 276829:BXSGV nidx=null]
Archoceras
 - Archoceras Schindewolf, 1937 [ACCEPTED GENUS 272972:BSHRF nidx=null]
 + Archoceras [ACCEPTED GENUS 276829:BXSK8 nidx=null]
Arctoarpadites
 - Arctoarpadites Tozer, 1994 [ACCEPTED GENUS 272972:BSHRG nidx=null]
 + Arctoarpadites [ACCEPTED GENUS 276829:BXSLJ nidx=null]
Arctoceras
 - Arctoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSHRH nidx=null]
 + Arctoceras [ACCEPTED GENUS 276829:BXSLN nidx=null]
Arctoceratidae
 - Arctoceratidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSGXW nidx=null]
 + Arctoceratidae [ACCEPTED FAMILY 276829:BWYKP nidx=null]
Arctogymnites
 - Arctogymnites Popov, 1962 [ACCEPTED GENUS 272972:BSHRJ nidx=null]
 + Arctogymnites [ACCEPTED GENUS 276829:BXSLZ nidx=null]
Arctohungarites
 - Arctohungarites Diener, 1916 [ACCEPTED GENUS 272972:BSHRK nidx=null]
 + Arctohungarites [ACCEPTED GENUS 276829:BXSM3 nidx=null]
Arctomeekoceras
 - Arctomeekoceras Popov, 1962 [ACCEPTED GENUS 272972:BSHRL nidx=null]
 + Arctomeekoceras [ACCEPTED GENUS 276829:BXSM6 nidx=null]
Arctoprionites
 - Arctoprionites Spath, 1930 [ACCEPTED GENUS 272972:BSHRM nidx=null]
 + Arctoprionites [ACCEPTED GENUS 276829:BXSMP nidx=null]
Arctoptychites
 - Arctoptychites Archipov et al., 1974 [ACCEPTED GENUS 272972:BSHRN nidx=null]
 + Arctoptychites [ACCEPTED GENUS 276829:BXSMV nidx=null]
Arctoptychites kruzini
 - Arctoptychites kruzini Bychkov et al., 1976 [ACCEPTED SPECIES 272972:BSPW5 nidx=null]
 + Arctoptychites kruzini Bytschkov, 1976 [ACCEPTED SPECIES 276829:C8WFD nidx=null]
Arctosirenites
 - Arctosirenites Tozer, 1961 [ACCEPTED GENUS 272972:BSHRP nidx=null]
 + Arctosirenites [ACCEPTED GENUS 276829:BXSMW nidx=null]
Arctotropites
 - Arctotropites Tozer, 1994 [ACCEPTED GENUS 272972:BSHRQ nidx=null]
 + Arctotropites [ACCEPTED GENUS 276829:BXSMY nidx=null]
Ardesciella
 - Ardesciella Bulot et al., 2014 [ACCEPTED GENUS 272972:BSHRS nidx=null]
 + Ardesciella [ACCEPTED GENUS 276829:BXSNS nidx=null]
Argolites
 - Argolites Renz, 1939 [ACCEPTED GENUS 272972:BSHRT nidx=null]
 + Argolites [ACCEPTED GENUS 276829:BXSRY nidx=null]
Argonauticeras
 - Argonauticeras (Anderson, 1938) [ACCEPTED GENUS 272972:BSHRV nidx=null]
 + Argonauticeras [ACCEPTED GENUS 276829:BXSRZ nidx=null]
Arianites
 - Arianites Arthaber, 1911 [ACCEPTED GENUS 272972:BSHRY nidx=null]
 + Arianites [ACCEPTED GENUS 276829:BXSWL nidx=null]
Aricoceras
 - Aricoceras Ruzhentsev, 1950 [ACCEPTED GENUS 272972:BSHRZ nidx=null]
 + Aricoceras [ACCEPTED GENUS 276829:BXSWX nidx=null]
Arieticeras
 - Arieticeras Seguenza, 1885 [ACCEPTED GENUS 272972:BSHS2 nidx=null]
 - Arieticeras Quenstedt, 1882 [SYNONYM GENUS 272972:BSHS3 nidx=null parent=BT3M3]
 + Arieticeras [ACCEPTED GENUS 276829:BXSXW nidx=null]
Arietitidae
 - Arietitidae Hyatt, 1875 [ACCEPTED FAMILY 272972:BSGXX nidx=null]
 + Arietitidae [ACCEPTED FAMILY 276829:BWYL7 nidx=null]
Arietoceltites
 - Arietoceltites Diener, 1916 [ACCEPTED GENUS 272972:BSHS4 nidx=null]
 + Arietoceltites [ACCEPTED GENUS 276829:BXSXX nidx=null]
Aristoceras
 - Aristoceras Ruzhencev, 1950 [ACCEPTED GENUS 272972:BSHS6 nidx=null]
 + Aristoceras [ACCEPTED GENUS 276829:BXSZ5 nidx=null]
Aristoceratoides
 - Aristoceratoides Ruzhencev, 1960 [ACCEPTED GENUS 272972:BSHS7 nidx=null]
 + Aristoceratoides [ACCEPTED GENUS 276829:BXSZ6 nidx=null]
Aristoptychites
 - Aristoptychites Diener, 1916 [ACCEPTED GENUS 272972:BSHS8 nidx=null]
 + Aristoptychites [ACCEPTED GENUS 276829:BXSZB nidx=null]
Arkanites
 - Arkanites McCaleb et al., 1964 [ACCEPTED GENUS 272972:BSHS9 nidx=null]
 + Arkanites [ACCEPTED GENUS 276829:BXSZW nidx=null]
Armatites
 - Armatites Becker, 1993 [ACCEPTED GENUS 272972:BSHSB nidx=null]
 + Armatites [ACCEPTED GENUS 276829:BXT2W nidx=null]
Arnautoceltites
 - Arnautoceltites Diener, 1916 [ACCEPTED GENUS 272972:BSHSC nidx=null]
 + Arnautoceltites [ACCEPTED GENUS 276829:BXT53 nidx=null]
Arnioceras
 - Arnioceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSHSD nidx=null]
 + Arnioceras [ACCEPTED GENUS 276829:BXT58 nidx=null]
Arpadites
 - Arpadites (Mojsisovics, 1879) [ACCEPTED GENUS 272972:BSHSF nidx=null]
 + Arpadites [ACCEPTED GENUS 276829:BXT7P nidx=null]
 + Arpadites [ACCEPTED GENUS 276829:BXT7Q nidx=null]
Arpaditidae
 - Arpaditidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSGXY nidx=null]
 + Arpaditidae [ACCEPTED FAMILY 276829:BWYLC nidx=null]
Arrhaphoceras
 - Arrhaphoceras Whitehouse, 1927 [ACCEPTED GENUS 272972:BSHSJ nidx=null]
 + Arrhaphoceras [ACCEPTED GENUS 276829:BXT8H nidx=null]
 + Arrhaphoceras [ACCEPTED SUBGENUS 276829:BXT8J nidx=null]
Artinskia
 - Artinskia Karpinsky, 1926 [ACCEPTED GENUS 272972:BSHT6 nidx=null]
 + Artinskia [ACCEPTED GENUS 276829:BXTGF nidx=null]
Artioceras
 - Artioceras Ruzhencev, 1947 [ACCEPTED GENUS 272972:BSHT7 nidx=null]
 + Artioceras [ACCEPTED GENUS 276829:BXTGG nidx=null]
Artioceratoides
 - Artioceratoides Leonova, 1985 [ACCEPTED GENUS 272972:BSHT8 nidx=null]
 + Artioceratoides [ACCEPTED GENUS 276829:BXTGH nidx=null]
Asklepioceras
 - Asklepioceras (Renz, 1911) [ACCEPTED GENUS 272972:BSHT9 nidx=null]
 + Asklepioceras [ACCEPTED GENUS 276829:BXTR9 nidx=null]
Aspenites
 - Aspenites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSHTD nidx=null]
 + Aspenites [ACCEPTED GENUS 276829:BXTSK nidx=null]
Aspenitidae
 - Aspenitidae (Spath, 1934) [ACCEPTED FAMILY 272972:BSGXZ nidx=null]
 + Aspenitidae [ACCEPTED FAMILY 276829:BWYLW nidx=null]
Aspidoceras
 - Aspidoceras (Zittel) [ACCEPTED GENUS 272972:BSHTF nidx=null]
 + Aspidoceras [ACCEPTED GENUS 276829:BXTTN nidx=null]
Aspidoceratidae
 - Aspidoceratidae Zittel, 1895 [ACCEPTED FAMILY 272972:BSGY2 nidx=null]
 + Aspidoceratidae [ACCEPTED FAMILY 276829:BWYLZ nidx=null]
Asteroceras
 - Asteroceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSHTJ nidx=null]
 + Asteroceras [ACCEPTED GENUS 276829:BXTXD nidx=null]
 + Asteroceras Lyman, 1879 [SYNONYM GENUS 276829:BXTXF nidx=null parent=BVRLL]
Asteroceratidae
 - Asteroceratidae (Spath, 1946) [ACCEPTED FAMILY 272972:BSGY3 nidx=null]
 + Asteroceratidae [ACCEPTED FAMILY 276829:BWYM8 nidx=null]
Astreptoceras
 - Astreptoceras Henderson, 1970 [ACCEPTED GENUS 272972:BSHTL nidx=null]
 + Astreptoceras [ACCEPTED GENUS 276829:BXTZM nidx=null]
Astrodiscus
 - Astrodiscus (Saveliev, 1973) [SYNONYM GENUS 272972:BSVTC nidx=null parent=BSVTD]
 + Astrodiscus Schulze, 1875 [SYNONYM GENUS 276829:CSHT3 nidx=null parent=87DHZ]
Asturoceras
 - Asturoceras Ruzhencev & Bogoslovskaya, 1969 [ACCEPTED GENUS 272972:BSHTM nidx=null]
 + Asturoceras [ACCEPTED GENUS 276829:BXV3X nidx=null]
Ataxioceratidae
 - Ataxioceratidae (Buckman, 1921) [ACCEPTED FAMILY 272972:BSGY4 nidx=null]
 + Ataxioceratidae [ACCEPTED FAMILY 276829:BWYMY nidx=null]
Atlantoceras
 - Atlantoceras Bensaid, 1974 [ACCEPTED GENUS 272972:BSHTP nidx=null]
 + Atlantoceras [ACCEPTED GENUS 276829:BXVBM nidx=null]
Atlantoceratidae
 - Atlantoceratidae Korn, 2001 [ACCEPTED FAMILY 272972:BSGY5 nidx=null]
 + Atlantoceratidae [ACCEPTED FAMILY 276829:BWYN7 nidx=null]
Audouliceras
 - Audouliceras (Thomel, 1964) [ACCEPTED GENUS 272972:BSHTT nidx=null]
 + Audouliceras [ACCEPTED GENUS 276829:BXVHG nidx=null]
Auguritidae
 - Auguritidae Bogoslovsky, 1961 [ACCEPTED FAMILY 272972:BSGY6 nidx=null]
 + Auguritidae [ACCEPTED FAMILY 276829:BWYNR nidx=null]
Augustaceras
 - Augustaceras Bucher, 1988 [ACCEPTED GENUS 272972:BSHTW nidx=null]
 + Augustaceras [ACCEPTED GENUS 276829:BXVHT nidx=null]
Aulacaganides
 - Aulacaganides Zhou, 1985 [ACCEPTED GENUS 272972:BSHTX nidx=null]
 + Aulacaganides [ACCEPTED GENUS 276829:BXVJ3 nidx=null]
Aulacogastrioceras
 - Aulacogastrioceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSHTY nidx=null]
 + Aulacogastrioceras [ACCEPTED GENUS 276829:BXVJK nidx=null]
Aulacorthum (Aulacorthum) speyeri
 - Aulacorthum (Aulacorthum) speyeri Börner, 1939 [ACCEPTED SPECIES 272972:BSQ24 nidx=null]
 + Aulacorthum (Aulacorthum) speyeri Börner, 1939 [ACCEPTED SPECIES 276829:C9BHY nidx=null]
Aulacorthum (Neomyzus) circumflexum
 - Aulacorthum (Neomyzus) circumflexum (Buckton, 1876) [SYNONYM SPECIES 272972:BSHYW nidx=null parent=6RVQN]
 + Aulacorthum (Neomyzus) circumflexum (Buckton, 1876) [SYNONYM SPECIES 276829:BXZJP nidx=null parent=6RVQN]
 + Aulacorthum (Neomyzus) circumflexum (Buckton, 1876) [SYNONYM SPECIES 276829:BXZJQ nidx=null parent=6RVQN]
Aulacostephanidae
 - Aulacostephanidae Spath, 1924 [ACCEPTED FAMILY 272972:BSFXR nidx=null]
 + Aulacostephanidae [ACCEPTED FAMILY 276829:BV9P8 nidx=null]
Aulatornoceras
 - Aulatornoceras (Schindewolf, 1922) [ACCEPTED GENUS 272972:BSHV4 nidx=null]
 + Aulatornoceras [ACCEPTED GENUS 276829:BXVMB nidx=null]
Australiceras
 - Australiceras Whitehouse, 1926 [ACCEPTED GENUS 272972:BSHV8 nidx=null]
 + Australiceras [ACCEPTED GENUS 276829:BXVRQ nidx=null]
Austrotrachyceras
 - Austrotrachyceras Krystyn, 1978 [ACCEPTED GENUS 272972:BSHV9 nidx=null]
 + Austrotrachyceras [ACCEPTED GENUS 276829:BXVXG nidx=null]
Axinolobus
 - Axinolobus Gordon, 1960 [ACCEPTED GENUS 272972:BSHVB nidx=null]
 + Axinolobus [ACCEPTED GENUS 276829:BXW4B nidx=null]
Axonoceras
 - Axonoceras Stephenson, 1941 [ACCEPTED GENUS 272972:BSHVC nidx=null]
 + Axonoceras [ACCEPTED GENUS 276829:BXW5F nidx=null]
Azarianites
 - Azarianites Dagis, 1987 [ACCEPTED GENUS 272972:BSHVD nidx=null]
 + Azarianites [ACCEPTED GENUS 276829:BXW6B nidx=null]
Bacchites
 - Bacchites (Smith, 1927) [ACCEPTED GENUS 272972:BSHVF nidx=null]
 + Bacchites [ACCEPTED GENUS 276829:BXW7J nidx=null]
Baculina
 - Baculina d'Orbigny, 1850 [ACCEPTED GENUS 272972:BSHVL nidx=null]
 + Baculina [ACCEPTED GENUS 276829:BXW9W nidx=null]
Baculites
 - Baculites Lamarck, 1799 [ACCEPTED GENUS 272972:BSGC6 nidx=null]
 + Baculites [ACCEPTED GENUS 276829:BVS64 nidx=null]
Baculitidae
 - Baculitidae Gill, 1871 [ACCEPTED FAMILY 272972:BSGY7 nidx=null]
 + Baculitidae [ACCEPTED FAMILY 276829:BWYQM nidx=null]
Badiotites
 - Badiotites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSHVQ nidx=null]
 + Badiotites [ACCEPTED GENUS 276829:BXWBB nidx=null]
Badiotitidae
 - Badiotitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSGY8 nidx=null]
 + Badiotitidae [ACCEPTED FAMILY 276829:BWYQN nidx=null]
Badouxia
 - Badouxia Guex & Taylor, 1976 [ACCEPTED GENUS 272972:BSHVR nidx=null]
 + Badouxia [ACCEPTED GENUS 276829:BXWBN nidx=null]
Bageites
 - Bageites Zaborski, 1998 [ACCEPTED GENUS 272972:BSHVT nidx=null]
 + Bageites [ACCEPTED GENUS 276829:BXWCF nidx=null]
Bagnolites
 - Bagnolites Donovan, 1998 [ACCEPTED GENUS 272972:BSHVV nidx=null]
 + Bagnolites [ACCEPTED GENUS 276829:BXWCM nidx=null]
Baidites
 - Baidites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSHVW nidx=null]
 + Baidites [ACCEPTED GENUS 276829:BXWDK nidx=null]
Bairstowius
 - Bairstowius Jeletzky, 1994 [ACCEPTED GENUS 272972:BSHVX nidx=null]
 + Bairstowius [ACCEPTED GENUS 276829:BXWFD nidx=null]
Bajarunia
 - Bajarunia Dagys, 1983 [ACCEPTED GENUS 272972:BSHVY nidx=null]
 + Bajarunia [ACCEPTED GENUS 276829:BXWFY nidx=null]
Bajocia
 - Bajocia Brasil, 1895 [ACCEPTED GENUS 272972:BSHVZ nidx=null]
 + Bajocia [ACCEPTED GENUS 276829:BXWG6 nidx=null]
Bakonyceras
 - Bakonyceras Geczy & Meister, 2007 [ACCEPTED GENUS 272972:BSHW2 nidx=null]
 + Bakonyceras [ACCEPTED GENUS 276829:BXWGS nidx=null]
Balatonites
 - Balatonites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSHW3 nidx=null]
 + Balatonites [ACCEPTED GENUS 276829:BXWJ3 nidx=null]
Balatonitidae
 - Balatonitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSGY9 nidx=null]
 + Balatonitidae [ACCEPTED FAMILY 276829:BWYR4 nidx=null]
Balearites
 - Balearites Sarkar, 1954 [ACCEPTED GENUS 272972:BSHW4 nidx=null]
 + Balearites [ACCEPTED GENUS 276829:BXWJH nidx=null]
Balhaeceras
 - Balhaeceras Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSHW5 nidx=null]
 + Balhaeceras [ACCEPTED GENUS 276829:BXWJN nidx=null]
Baltzerites
 - Baltzerites Rakús & Guex, 2002 [ACCEPTED GENUS 272972:BSHW6 nidx=null]
 + Baltzerites [ACCEPTED GENUS 276829:BXWM4 nidx=null]
Bamyaniceras
 - Bamyaniceras Termier & Termier, 1970 [ACCEPTED GENUS 272972:BSFYF nidx=null]
 + Bamyaniceras [ACCEPTED GENUS 276829:BVBDM nidx=null]
Barbula cordata f. brevicaulis
 - Barbula cordata f. brevicaulis (Röll) Podp. [SYNONYM FORM 272972:9VS8G nidx=null parent=35YTV]
 + Barbula cordata f. brevicaulis Podp. [SYNONYM FORM 276829:DF78V nidx=null parent=35YTV]
 + Barbula cordata f. brevicaulis (Röll) Podp. [SYNONYM FORM 276829:DF78W nidx=null parent=35YTV]
Barguesiella
 - Barguesiella Frau et al., 2016 [ACCEPTED GENUS 272972:BSHW7 nidx=null]
 + Barguesiella [ACCEPTED GENUS 276829:BXWTP nidx=null]
Barremitites
 - Barremitites Avram, 1997 [ACCEPTED GENUS 272972:BSHW9 nidx=null]
 + Barremitites [ACCEPTED GENUS 276829:BXWVH nidx=null]
Barroisiceras
 - Barroisiceras de Grossouvre, 1894 [ACCEPTED GENUS 272972:BSHWB nidx=null]
 + Barroisiceras [ACCEPTED GENUS 276829:BXWVL nidx=null]
 + Barroisiceras [ACCEPTED GENUS 276829:BXWVM nidx=null]
 + Barroisiceras [ACCEPTED SUBGENUS 276829:BXWVN nidx=null]
Barthelticeras
 - Barthelticeras Schairer, 1989 [ACCEPTED GENUS 272972:BSHWF nidx=null]
 + Barthelticeras [ACCEPTED GENUS 276829:BXWW3 nidx=null]
Baschkirites
 - Baschkirites Librovitch, 1957 [ACCEPTED GENUS 272972:BSHWG nidx=null]
 + Baschkirites [ACCEPTED GENUS 276829:BXWYH nidx=null]
Bashkortoceras
 - Bashkortoceras Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSHWH nidx=null]
 + Bashkortoceras [ACCEPTED GENUS 276829:BXWYN nidx=null]
Baskaniiceras
 - Baskaniiceras Wright & Kennedy, 1984 [ACCEPTED GENUS 272972:BSHWJ nidx=null]
 + Baskaniiceras [ACCEPTED GENUS 276829:BXWZB nidx=null]
Bassites
 - Bassites Cobban, 1987 [ACCEPTED GENUS 272972:BSHWK nidx=null]
 + Bassites [ACCEPTED GENUS 276829:BXWZK nidx=null]
Bauchioceras
 - Bauchioceras (Reyment, 1954) [SYNONYM GENUS 272972:BSHWM nidx=null parent=BSLZF]
 + Bauchioceras [ACCEPTED GENUS 276829:BXXCP nidx=null]
Becanites
 - Becanites Korn, 1997 [ACCEPTED GENUS 272972:BSHWP nidx=null]
 + Becanites [ACCEPTED GENUS 276829:BXXF2 nidx=null]
Bejucoceras
 - Bejucoceras Cantú Chapa, 1976 [ACCEPTED GENUS 272972:BSHWQ nidx=null]
 + Bejucoceras [ACCEPTED GENUS 276829:BXXGW nidx=null]
Belbekiceras
 - Belbekiceras Baraboschkin, 1997 [ACCEPTED GENUS 272972:BSHWR nidx=null]
 + Belbekiceras [ACCEPTED GENUS 276829:BXXHN nidx=null]
Belemnitella
 - Belemnitella d'Orbigny, 1840 [ACCEPTED GENUS 272972:BSHWV nidx=null]
 + Belemnitella [ACCEPTED GENUS 276829:BXXHY nidx=null]
Belemnitellidae
 - Belemnitellidae Pavlov, 1914 [ACCEPTED FAMILY 272972:BSGYC nidx=null]
 + Belemnitellidae [ACCEPTED FAMILY 276829:BWYSH nidx=null]
Belemnitida
 - Belemnitida Zittel, 1895 [ACCEPTED ORDER 272972:BSGTC nidx=null]
 + Belemnitida [ACCEPTED ORDER 276829:BWWB8 nidx=null]
Belemnitidae
 - Belemnitidae d'Orbigny, 1845 [ACCEPTED FAMILY 272972:BSGYD nidx=null]
 + Belemnitidae [ACCEPTED FAMILY 276829:BWYSJ nidx=null]
Beleutoceras
 - Beleutoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSHWX nidx=null]
 + Beleutoceras [ACCEPTED GENUS 276829:BXXJ7 nidx=null]
Bellaclymenia
 - Bellaclymenia Becker, 2002 [ACCEPTED GENUS 272972:BSHWY nidx=null]
 + Bellaclymenia [ACCEPTED GENUS 276829:BXXK2 nidx=null]
Bellidiscus
 - Bellidiscus Savel'ev, 1973 [ACCEPTED GENUS 272972:BSHWZ nidx=null]
 + Bellidiscus [ACCEPTED GENUS 276829:BXXL6 nidx=null]
Beloceras
 - Beloceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSHX2 nidx=null]
 + Beloceras [ACCEPTED GENUS 276829:BXXLH nidx=null]
Belocerataceae
 - Belocerataceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGTT nidx=null]
 + Belocerataceae [ACCEPTED SUPERFAMILY 276829:BWXBZ nidx=null]
Beloceratidae
 - Beloceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSGYF nidx=null]
 + Beloceratidae [ACCEPTED FAMILY 276829:BWYSQ nidx=null]
Bensaidites
 - Bensaidites Korn, 2002 [ACCEPTED GENUS 272972:BSHX5 nidx=null]
 + Bensaidites [ACCEPTED GENUS 276829:BXXPJ nidx=null]
Benueites
 - Benueites Reyment, 1954 [ACCEPTED GENUS 272972:BSHX6 nidx=null]
 + Benueites [ACCEPTED GENUS 276829:BXXQM nidx=null]
Berkhoceratidae
 - Berkhoceratidae Librovitch, 1957 [ACCEPTED FAMILY 272972:BSGYG nidx=null]
 + Berkhoceratidae [ACCEPTED FAMILY 276829:BWYT6 nidx=null]
Berniceras
 - Berniceras Jeannet, 1951 [ACCEPTED GENUS 272972:BSHX7 nidx=null]
 + Berniceras [ACCEPTED GENUS 276829:BXXTH nidx=null]
Berriasella
 - Berriasella (Uhlig, 1905) [ACCEPTED GENUS 272972:BSHX8 nidx=null]
 + Berriasella [ACCEPTED GENUS 276829:BXXTT nidx=null]
 + Berriasella [ACCEPTED SUBGENUS 276829:BXXTV nidx=null]
Berriasella calisto
 - Berriasella calisto (d'Orbigny, 1850) [SYNONYM SPECIES 272972:BSQ5Y nidx=null parent=BSP8W]
 + Berriasella calisto (Zittel, 1868) [ACCEPTED SPECIES 276829:C9XCQ nidx=null]
Berthelotia
 - Berthelotia DC. [SYNONYM UNRANKED 272972:5T6LC nidx=null parent=63NJ8]
 + Berthelotia DC. [SYNONYM UNRANKED 276829:D7KMT nidx=null parent=63NJ8]
Beudanticeras
 - Beudanticeras Hitzell, 1902 [ACCEPTED GENUS 272972:BSHXD nidx=null]
 + Beudanticeras [ACCEPTED GENUS 276829:BXXW7 nidx=null]
Beyrichites
 - Beyrichites Waagen, 1895 [ACCEPTED GENUS 272972:BSHXF nidx=null]
 + Beyrichites [ACCEPTED GENUS 276829:BXXWJ nidx=null]
Beyrichoceras
 - Beyrichoceras (Foord, 1903) [ACCEPTED GENUS 272972:BSHXG nidx=null]
 + Beyrichoceras [ACCEPTED GENUS 276829:BXXWK nidx=null]
Beyrichoceratoides
 - Beyrichoceratoides Bisat, 1924 [ACCEPTED GENUS 272972:BSHXK nidx=null]
 + Beyrichoceratoides [ACCEPTED GENUS 276829:BXXWL nidx=null]
Bhimaites
 - Bhimaites (Matsumoto, 1954) [ACCEPTED GENUS 272972:BSHXL nidx=null]
 + Bhimaites [ACCEPTED GENUS 276829:BXXX3 nidx=null]
Biarmiceras
 - Biarmiceras Leonova et al., 2005 [ACCEPTED GENUS 272972:BSHXN nidx=null]
 + Biarmiceras [ACCEPTED GENUS 276829:BXXXG nidx=null]
Bihatites
 - Bihatites Tatzreiter, 1980 [ACCEPTED GENUS 272972:BSHXR nidx=null]
 + Bihatites [ACCEPTED GENUS 276829:BXY2M nidx=null]
Bilinguites
 - Bilinguites Librovitch, 1946 [ACCEPTED GENUS 272972:BSHXS nidx=null]
 + Bilinguites [ACCEPTED GENUS 276829:BXY3H nidx=null]
Billingsites
 - Billingsites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSHXT nidx=null]
 + Billingsites [ACCEPTED GENUS 276829:BXY3X nidx=null]
Binelliceras
 - Binelliceras Sarkar, 1977 [ACCEPTED GENUS 272972:BSHXV nidx=null]
 + Binelliceras [ACCEPTED GENUS 276829:BXY4K nidx=null]
Binneyitidae
 - Binneyitidae Reeside, 1927 [ACCEPTED FAMILY 272972:BSGYH nidx=null]
 + Binneyitidae [ACCEPTED FAMILY 276829:BWYTV nidx=null]
Bisatoceras
 - Bisatoceras Miller & Owen, 1937 [ACCEPTED GENUS 272972:BSHXX nidx=null]
 + Bisatoceras [ACCEPTED GENUS 276829:BXY6Q nidx=null]
Bisatoceratidae
 - Bisatoceratidae Miller & Furnish, 1957 [ACCEPTED FAMILY 272972:BSGYJ nidx=null]
 + Bisatoceratidae [ACCEPTED FAMILY 276829:BWYTY nidx=null]
Blanfordia
 - Blanfordia (Uhlig, 1905) [SYNONYM GENUS 272972:BSHXZ nidx=null parent=BSHY4]
 + Blanfordia A. Adams, 1863 [ACCEPTED GENUS 276829:BXY9P nidx=null]
 + Blanfordia Duncan, 1880 [SYNONYM GENUS 276829:BXY9Q nidx=null parent=8FZVB]
Blanfordiceras
 - Blanfordiceras Cossman, 1907 [ACCEPTED GENUS 272972:BSHY4 nidx=null]
 + Blanfordiceras [ACCEPTED GENUS 276829:BXY9S nidx=null]
Bochianites
 - Bochianites Lory, 1898 [ACCEPTED GENUS 272972:BSHY6 nidx=null]
 + Bochianites [ACCEPTED GENUS 276829:BXYFM nidx=null]
Bochianitidae
 - Bochianitidae Spath, 1922 [ACCEPTED FAMILY 272972:BSGYK nidx=null]
 + Bochianitidae [ACCEPTED FAMILY 276829:BWYV5 nidx=null]
Bochianitoidea
 - Bochianitoidea Spath, 1922 [ACCEPTED SUPERFAMILY 272972:BSGTV nidx=null]
 + Bochianitoidea [ACCEPTED SUPERFAMILY 276829:BWXC6 nidx=null]
Boehmoceras
 - Boehmoceras Riedel, 1931 [ACCEPTED GENUS 272972:BSHY8 nidx=null]
 + Boehmoceras [ACCEPTED GENUS 276829:BXYGY nidx=null]
Boesites
 - Boesites Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSHY9 nidx=null]
 + Boesites [ACCEPTED GENUS 276829:BXYH2 nidx=null]
Bogdanoceras
 - Bogdanoceras Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSHYB nidx=null]
 + Bogdanoceras [ACCEPTED GENUS 276829:BXYHF nidx=null]
Bojeria
 - Bojeria DC. [SYNONYM UNRANKED 272972:5T6QL nidx=null parent=54NG]
 + Bojeria DC. [SYNONYM UNRANKED 276829:BXYK5 nidx=null parent=54NG]
Bollandoceras
 - Bollandoceras Bisat, 1952 [ACCEPTED GENUS 272972:BSHYD nidx=null]
 + Bollandoceras [ACCEPTED GENUS 276829:BXYQW nidx=null]
Bombyx flina
 - Bombyx flina [Denis & Schiffermüller], 1775 [SYNONYM SPECIES 272972:MGNL nidx=null parent=9475K]
 + Bombyx flina Hübner, [1808] [SYNONYM SPECIES 276829:CB438 nidx=null parent=943YD]
Boreomeekoceras
 - Boreomeekoceras Popov, 1961 [ACCEPTED GENUS 272972:BSHYL nidx=null]
 + Boreomeekoceras [ACCEPTED GENUS 276829:BXZ2T nidx=null]
Boreotrachyceras
 - Boreotrachyceras Konstantinov, 2012 [ACCEPTED GENUS 272972:BSHYM nidx=null]
 + Boreotrachyceras [ACCEPTED GENUS 276829:BXZ3B nidx=null]
Borisiclymenia
 - Borisiclymenia Korn, 2002 [ACCEPTED GENUS 272972:BSHYN nidx=null]
 + Borisiclymenia [ACCEPTED GENUS 276829:BXZ42 nidx=null]
Borissiakoceras
 - Borissiakoceras Arkhangel'skii, 1916 [ACCEPTED GENUS 272972:BSHYP nidx=null]
 + Borissiakoceras [ACCEPTED GENUS 276829:BXZ43 nidx=null]
Bornhardticeras
 - Bornhardticeras Böhm & Riedel, 1933 [ACCEPTED GENUS 272972:BSHYR nidx=null]
 + Bornhardticeras [ACCEPTED GENUS 276829:BXZ5V nidx=null]
Boughdiriella
 - Boughdiriella Frau et al., 2015 [ACCEPTED GENUS 272972:BSHYZ nidx=null]
 + Boughdiriella [ACCEPTED GENUS 276829:BXZLQ nidx=null]
Bouhamedites
 - Bouhamedites Korn et al., 2003 [ACCEPTED GENUS 272972:BSHZ2 nidx=null]
 + Bouhamedites [ACCEPTED GENUS 276829:BXZLR nidx=null]
Bouhamidoceras
 - Bouhamidoceras Dubar, 1961 [ACCEPTED GENUS 272972:BSHZ3 nidx=null]
 + Bouhamidoceras [ACCEPTED GENUS 276829:BXZLS nidx=null]
Brachycaudus (Brachycaudus) prunidomesticae
 - Brachycaudus (Brachycaudus) prunidomesticae [ACCEPTED SPECIES 272972:8QYZF nidx=null]
 + Brachycaudus (Brachycaudus) prunidomesticae [ACCEPTED SPECIES 276829:CB8RS nidx=null]
Brachycaudus (Brachycaudus) viridanus
 - Brachycaudus (Brachycaudus) viridanus (Nevsky, 1929) [ACCEPTED SPECIES 272972:BSQ8W nidx=null]
 + Brachycaudus (Brachycaudus) viridanus (Nevsky, 1929) [ACCEPTED SPECIES 276829:CB8GK nidx=null]
Brackites
 - Brackites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSHZD nidx=null]
 + Brackites [ACCEPTED GENUS 276829:BY2FR nidx=null]
Bracon polonicus
 - Bracon polonicus Fahringer, 1928 [SYNONYM SPECIES 272972:N45V nidx=null parent=5DNZQ]
 + Bracon polonicus Fahringer, 1927 [AMBIGUOUS_SYNONYM SPECIES 276829:CB9NP nidx=null parent=5X3NT]
 + Bracon polonicus Fahringer, 1928 [SYNONYM SPECIES 276829:CB9NQ nidx=null parent=5DNZQ]
Bracon rytrensis
 - Bracon rytrensis Fahringer, 1927 [SYNONYM SPECIES 272972:BSQ9Z nidx=null parent=5DP23]
 + Bracon rytrensis Fahringer, 1927 [SYNONYM SPECIES 276829:CB9NS nidx=null parent=5DP23]
 + Bracon rytrensis Fahringer, 1928 [AMBIGUOUS_SYNONYM SPECIES 276829:CB9NT nidx=null parent=N4FH]
Bradfordia
 - Bradfordia Buckman, 1910 [ACCEPTED GENUS 272972:BSHZF nidx=null]
 + Bradfordia [ACCEPTED GENUS 276829:BY2HT nidx=null]
Bradyia
 - Bradyia Bucher, 2002 [ACCEPTED GENUS 272972:BSHZG nidx=null]
 + Bradyia [ACCEPTED GENUS 276829:BY2JV nidx=null]
Brancoceras
 - Brancoceras Steinmann, 1881 [ACCEPTED GENUS 272972:BSHZJ nidx=null]
 + Brancoceras [ACCEPTED GENUS 276829:BY2MX nidx=null]
 + Brancoceras [ACCEPTED SUBGENUS 276829:BY2MY nidx=null]
Brancoceratidae
 - Brancoceratidae Spath, 1934 [ACCEPTED FAMILY 272972:BSFXS nidx=null]
 + Brancoceratidae [ACCEPTED FAMILY 276829:BV9PK nidx=null]
Branneroceras
 - Branneroceras (Plummer & Scott, 1937) [ACCEPTED GENUS 272972:BSHZL nidx=null]
 + Branneroceras [ACCEPTED GENUS 276829:BY2NT nidx=null]
Bransonoceras
 - Bransonoceras Miller & Parizek, 1948 [ACCEPTED GENUS 272972:BSHZP nidx=null]
 + Bransonoceras [ACCEPTED GENUS 276829:BY2NX nidx=null]
Brayardites
 - Brayardites Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSHZQ nidx=null]
 + Brayardites [ACCEPTED GENUS 276829:BY2TL nidx=null]
Brevikites
 - Brevikites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSHZR nidx=null]
 + Brevikites [ACCEPTED GENUS 276829:BY2Y8 nidx=null]
Brewericeras
 - Brewericeras Casey, 1954 [ACCEPTED GENUS 272972:BSHZT nidx=null]
 + Brewericeras [ACCEPTED GENUS 276829:BY2ZM nidx=null]
Brotheotrachyceras
 - Brotheotrachyceras Urlichs, 1994 [ACCEPTED GENUS 272972:BSHZY nidx=null]
 + Brotheotrachyceras [ACCEPTED GENUS 276829:BY36M nidx=null]
Brouwerites
 - Brouwerites Diener, 1923 [ACCEPTED GENUS 272972:BSHZZ nidx=null]
 + Brouwerites [ACCEPTED GENUS 276829:BY36Y nidx=null]
Buccinammonites
 - Buccinammonites Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSJ22 nidx=null]
 + Buccinammonites [ACCEPTED GENUS 276829:BY3SW nidx=null]
Buchiceras
 - Buchiceras Hyatt, 1875 [ACCEPTED GENUS 272972:BSJ23 nidx=null]
 + Buchiceras [ACCEPTED GENUS 276829:BY3V5 nidx=null]
Budaiceras
 - Budaiceras Böse, 1928 [ACCEPTED GENUS 272972:BSJ24 nidx=null]
 + Budaiceras [ACCEPTED GENUS 276829:BY3WF nidx=null]
Buddhaites
 - Buddhaites Diener, 1895 [ACCEPTED GENUS 272972:BSJ26 nidx=null]
 + Buddhaites [ACCEPTED GENUS 276829:BY3WL nidx=null]
Bugunzhites
 - Bugunzhites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSJ27 nidx=null]
 + Bugunzhites [ACCEPTED GENUS 276829:BY3Y4 nidx=null]
Bukkenites
 - Bukkenites Tozer, 1994 [ACCEPTED GENUS 272972:BSJ28 nidx=null]
 + Bukkenites [ACCEPTED GENUS 276829:BY3Y7 nidx=null]
Bukowskites
 - Bukowskites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJ29 nidx=null]
 + Bukowskites [ACCEPTED GENUS 276829:BY3Y9 nidx=null]
Bulogites
 - Bulogites Arthaber, 1912 [ACCEPTED GENUS 272972:BSJ2C nidx=null]
 + Bulogites [ACCEPTED GENUS 276829:BY43G nidx=null]
Bulunites
 - Bulunites Andrianov, 1985 [ACCEPTED GENUS 272972:BSJ2D nidx=null]
 + Bulunites [ACCEPTED GENUS 276829:BY43R nidx=null]
Burckhardites
 - Burckhardites Humphrey, 1949 [ACCEPTED GENUS 272972:BSJ2G nidx=null]
 + Burckhardites [ACCEPTED GENUS 276829:BY468 nidx=null]
Burijites
 - Burijites Zakharov, 1978 [ACCEPTED GENUS 272972:BSJ2H nidx=null]
 + Burijites [ACCEPTED GENUS 276829:BY46V nidx=null]
Burroceras
 - Burroceras Cobban et al., 1989 [ACCEPTED GENUS 272972:BSJ2L nidx=null]
 + Burroceras [ACCEPTED GENUS 276829:BY48H nidx=null]
Busnardoiceras
 - Busnardoiceras Tavera, 1985 [ACCEPTED GENUS 272972:BSJ2M nidx=null]
 + Busnardoiceras [ACCEPTED GENUS 276829:BY4BD nidx=null]
Butticeras
 - Butticeras Anderson, 1958 [SYNONYM GENUS 272972:BSJ2N nidx=null parent=BSMHC]
 + Butticeras [ACCEPTED GENUS 276829:BY4BQ nidx=null]
Byrrangoceras
 - Byrrangoceras Dagys, 1997 [ACCEPTED GENUS 272972:BSJ2P nidx=null]
 + Byrrangoceras [ACCEPTED GENUS 276829:BY4CD nidx=null]
Byrrangoceratidae
 - Byrrangoceratidae Dagys, 1997 [ACCEPTED FAMILY 272972:BSGYL nidx=null]
 + Byrrangoceratidae [ACCEPTED FAMILY 276829:BWYY9 nidx=null]
Cabrieroceras
 - Cabrieroceras Bogoslovsky, 1961 [ACCEPTED GENUS 272972:BSJ2X nidx=null]
 + Cabrieroceras [ACCEPTED GENUS 276829:BY4GS nidx=null]
Caenisites
 - Caenisites Buckman, 1925 [ACCEPTED GENUS 272972:BSJ2Z nidx=null]
 + Caenisites [ACCEPTED GENUS 276829:BY4NZ nidx=null]
Caenolyroceras
 - Caenolyroceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSJ32 nidx=null]
 + Caenolyroceras [ACCEPTED GENUS 276829:BY4P6 nidx=null]
Cagliceras
 - Cagliceras Rulleau & Elmi, 2001 [ACCEPTED GENUS 272972:BSJ39 nidx=null]
 + Cagliceras [ACCEPTED GENUS 276829:BY4W4 nidx=null]
Calaiceras
 - Calaiceras (Kovács, 1939) [ACCEPTED GENUS 272972:BSJ3C nidx=null]
 + Calaiceras [ACCEPTED GENUS 276829:BY4ZW nidx=null]
Calanquites
 - Calanquites Frau et al., 2016 [ACCEPTED GENUS 272972:BSJ3F nidx=null]
 + Calanquites [ACCEPTED GENUS 276829:BY538 nidx=null]
Calliphylloceras
 - Calliphylloceras (Spath, 1927) [ACCEPTED GENUS 272972:BSJ3K nidx=null]
 + Calliphylloceras [ACCEPTED GENUS 276829:BY5DR nidx=null]
Callomoniceras
 - Callomoniceras Meister & Dommergues, 2011 [ACCEPTED GENUS 272972:BSJ3S nidx=null]
 + Callomoniceras [ACCEPTED GENUS 276829:BY5GY nidx=null]
Calycoceras
 - Calycoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJ3V nidx=null]
 + Calycoceras [ACCEPTED GENUS 276829:BY5R3 nidx=null]
 + Calycoceras [ACCEPTED SUBGENUS 276829:BY5R4 nidx=null]
Calygirtyoceras
 - Calygirtyoceras Korn et al., 1999 [ACCEPTED GENUS 272972:BSJ3X nidx=null]
 + Calygirtyoceras [ACCEPTED GENUS 276829:BY5R7 nidx=null]
Campylites
 - Campylites Rollier, 1922 [SYNONYM GENUS 272972:BSJ3Y nidx=null parent=BSL34]
 + Campylites Brood, 1988 [ACCEPTED GENUS 276829:BY65C nidx=null]
Canadoceras
 - Canadoceras Spath, 1922 [ACCEPTED GENUS 272972:BSJ3Z nidx=null]
 + Canadoceras [ACCEPTED GENUS 276829:BY66M nidx=null]
Canaliculites
 - Canaliculites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJ42 nidx=null]
 + Canaliculites [ACCEPTED GENUS 276829:BY66V nidx=null]
Canavaria
 - Canavaria Buckman, 1902 [SYNONYM GENUS 272972:BSJ43 nidx=null parent=6SX3]
 - Canavaria Gemmellaro, 1886 [ACCEPTED GENUS 272972:BSJ44 nidx=null]
 + Canavaria [ACCEPTED GENUS 276829:BY684 nidx=null]
 + Canavaria [ACCEPTED SUBGENUS 276829:BY685 nidx=null]
Cancelloceras
 - Cancelloceras Ruzhencev & Bogoslovskaya, 1969 [ACCEPTED GENUS 272972:BSJ46 nidx=null]
 + Cancelloceras [ACCEPTED GENUS 276829:BY689 nidx=null]
Candidea
 - Candidea Ten. [SYNONYM UNRANKED 272972:5T78M nidx=null parent=372S]
 + Candidea Ten. [SYNONYM UNRANKED 276829:D7KYF nidx=null parent=372S]
Cantabricanites
 - Cantabricanites Weyer, 1965 [ACCEPTED GENUS 272972:BSJ47 nidx=null]
 + Cantabricanites [ACCEPTED GENUS 276829:BY6BV nidx=null]
Cantabrigites
 - Cantabrigites (Spath, 1933) [SYNONYM GENUS 272972:BSMYS nidx=null parent=BSMYV]
 + Cantabrigites [ACCEPTED SUBGENUS 276829:C5X9F nidx=null]
Cantianiceras
 - Cantianiceras Faraoni et al., 1997 [ACCEPTED GENUS 272972:BSJ48 nidx=null]
 + Cantianiceras [ACCEPTED GENUS 276829:BY6D8 nidx=null]
Capreoliceras
 - Capreoliceras Alkaya & Meister, 1995 [ACCEPTED GENUS 272972:BSJ49 nidx=null]
 + Capreoliceras [ACCEPTED GENUS 276829:BY6JB nidx=null]
Cardiella
 - Cardiella Pavlov, 1967 [ACCEPTED GENUS 272972:BSJ4B nidx=null]
 + Cardiella [ACCEPTED GENUS 276829:BY6MB nidx=null]
Cardioceratidae
 - Cardioceratidae Siemiradzki, 1891 [ACCEPTED FAMILY 272972:BSGYM nidx=null]
 + Cardioceratidae [ACCEPTED FAMILY 276829:BWZ35 nidx=null]
Carinacanthites
 - Carinacanthites Tozer, 1994 [ACCEPTED GENUS 272972:BSJ4F nidx=null]
 + Carinacanthites [ACCEPTED GENUS 276829:BY6PZ nidx=null]
Carinoceras
 - Carinoceras Ljaschenko, 1957 [ACCEPTED GENUS 272972:BSHFC nidx=null]
 + Carinoceras [ACCEPTED GENUS 276829:BX9WQ nidx=null]
Carinoclymeniidae
 - Carinoclymeniidae Bogoslovsky, 1975 [ACCEPTED FAMILY 272972:BSGYN nidx=null]
 + Carinoclymeniidae [ACCEPTED FAMILY 276829:BWZ3B nidx=null]
Carinolytoceras
 - Carinolytoceras Wiedmann, 1962 [ACCEPTED GENUS 272972:BSJ4G nidx=null]
 + Carinolytoceras [ACCEPTED GENUS 276829:BY6RD nidx=null]
Carinophylloceras
 - Carinophylloceras Klinger et al., 1975 [ACCEPTED GENUS 272972:BSJ4H nidx=null]
 + Carinophylloceras [ACCEPTED GENUS 276829:BY6RL nidx=null]
Carnites
 - Carnites Mojsisovics, 1873 [ACCEPTED GENUS 272972:BSJ4J nidx=null]
 + Carnites [ACCEPTED GENUS 276829:BY6T6 nidx=null]
Carnitidae
 - Carnitidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSGYP nidx=null]
 + Carnitidae [ACCEPTED FAMILY 276829:BWZ3H nidx=null]
Carteria
 - Carteria Guex et al., 2005 [ACCEPTED GENUS 272972:BSFSY nidx=null]
 + Carteria [ACCEPTED GENUS 276829:BV5B9 nidx=null]
 + Carteria Gray, 1867 [SYNONYM GENUS 276829:BV5BB nidx=null parent=BWHRR]
Carthaginites
 - Carthaginites (Pervinquière, 1907) [ACCEPTED GENUS 272972:BSJ4K nidx=null]
 + Carthaginites [ACCEPTED GENUS 276829:BY6WB nidx=null]
Castanyiceras
 - Castanyiceras Rakús & Guex, 2002 [ACCEPTED GENUS 272972:BSJ4N nidx=null]
 + Castanyiceras [ACCEPTED GENUS 276829:BY72T nidx=null]
Catenohalorites
 - Catenohalorites Tatzreiter, 1980 [ACCEPTED GENUS 272972:BSJ4P nidx=null]
 + Catenohalorites [ACCEPTED GENUS 276829:BY799 nidx=null]
Catriceras
 - Catriceras Venturi, 1978 [ACCEPTED GENUS 272972:BSJ4Q nidx=null]
 + Catriceras [ACCEPTED GENUS 276829:BY7LH nidx=null]
Catutosphinctes
 - Catutosphinctes Leanza & Zeiss, 1992 [ACCEPTED GENUS 272972:BSJ4R nidx=null]
 + Catutosphinctes [ACCEPTED GENUS 276829:BY7MP nidx=null]
Caucasites
 - Caucasites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSJ4S nidx=null]
 + Caucasites [ACCEPTED GENUS 276829:BY7N5 nidx=null]
Cavilentia
 - Cavilentia Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSJ4W nidx=null]
 + Cavilentia [ACCEPTED GENUS 276829:BY7V3 nidx=null]
Ceccaceras
 - Ceccaceras Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSJ4X nidx=null]
 + Ceccaceras [ACCEPTED GENUS 276829:BY7WT nidx=null]
Ceccaisculitoides
 - Ceccaisculitoides Guex et al., 2005 [ACCEPTED GENUS 272972:BSJ4Y nidx=null]
 + Ceccaisculitoides [ACCEPTED GENUS 276829:BY7WV nidx=null]
Cecropia juranyiana
 - Cecropia juranyiana Aladar Richt. ex Aladar Richt. [SYNONYM SPECIES 272972:BMSM2 nidx=null parent=RZTV]
 + Cecropia juranyiana Aladar Richt. ex Aladar Richt. [SYNONYM SPECIES 276829:CCDVK nidx=null parent=RZTV]
Celaeceras
 - Celaeceras Sepkoski, 2002 [ACCEPTED GENUS 272972:BSJ4Z nidx=null]
 + Celaeceras [ACCEPTED GENUS 276829:BY7Y2 nidx=null]
Celtites
 - Celtites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSJ53 nidx=null]
 + Celtites [ACCEPTED GENUS 276829:BY85C nidx=null]
Cenisella
 - Cenisella Delamette & Latil, 1989 [ACCEPTED GENUS 272972:BSJ54 nidx=null]
 + Cenisella [ACCEPTED GENUS 276829:BY86V nidx=null]
Centrapalus
 - Centrapalus Cass. [SYNONYM UNRANKED 272972:B3G3G nidx=null parent=647MF]
 + Centrapalus Cass. [SYNONYM UNRANKED 276829:BV5D3 nidx=null parent=647MF]
Ceratitaceae
 - Ceratitaceae Mojsisovics, 1879 [ACCEPTED SUPERFAMILY 272972:BSGTW nidx=null]
 + Ceratitaceae [ACCEPTED SUPERFAMILY 276829:BWXDB nidx=null]
Ceratites
 - Ceratites (de Haan, 1825) [ACCEPTED GENUS 272972:BSJ5C nidx=null]
 + Ceratites [ACCEPTED GENUS 276829:BY8SQ nidx=null]
Ceratites gosaviensis
 - Ceratites gosaviensis (von Mojsisovics, 1878) [ACCEPTED SPECIES 272972:BSQPR nidx=null]
 + Ceratites gosaviensis (Mojsisovics, 1882) [SYNONYM SPECIES 276829:CCJT3 nidx=null parent=D3ZFP]
Ceratites trinodosus
 - Ceratites trinodosus (von Mojsisovics, 1878) [ACCEPTED SPECIES 272972:BSQPW nidx=null]
 + Ceratites trinodosus (Mojsisovics, 1882) [SYNONYM SPECIES 276829:CCJT4 nidx=null parent=CWPPY]
Ceratitidae
 - Ceratitidae Mojsisovics, 1879 [ACCEPTED FAMILY 272972:BSGYQ nidx=null]
 + Ceratitidae [ACCEPTED FAMILY 276829:BWZ52 nidx=null]
Ceratopogon fuliginosus
 - Ceratopogon fuliginosus Meigen & Wiedemann, 1818 [SYNONYM SPECIES 272972:92LB3 nidx=null parent=92S3B]
 + Ceratopogon fuliginosus Meigen & Wiedemann, 1818 [SYNONYM SPECIES 276829:8YRXY nidx=null parent=92S3B]
Ceratosphinctes
 - Ceratosphinctes (Ziegler, 1959) [SYNONYM GENUS 272972:BSMYX nidx=null parent=BSMYY]
 + Ceratosphinctes [ACCEPTED SUBGENUS 276829:C5XCM nidx=null]
Ceratotuberculus
 - Ceratotuberculus Imlay, 1938 [ACCEPTED GENUS 272972:BSJ5J nidx=null]
 + Ceratotuberculus [ACCEPTED GENUS 276829:BY93G nidx=null]
Cetonoceras
 - Cetonoceras Wiedenmayer, 1977 [ACCEPTED GENUS 272972:BSJ5R nidx=null]
 + Cetonoceras [ACCEPTED GENUS 276829:BY9L5 nidx=null]
Changhsingoceras
 - Changhsingoceras Zhao & Liang, 1965 [ACCEPTED GENUS 272972:BSJ63 nidx=null]
 + Changhsingoceras [ACCEPTED GENUS 276829:BYBYD nidx=null]
Chaotianoceras
 - Chaotianoceras Zhao & Liang, 1974 [ACCEPTED GENUS 272972:BSJ64 nidx=null]
 + Chaotianoceras [ACCEPTED GENUS 276829:BYBYY nidx=null]
Charagia coreeba
 - Charagia coreeba Oliff, 1895 [SYNONYM SPECIES 272972:9696S nidx=null parent=93PZ8]
 + Charagia coreeba Olliff, 1895 [SYNONYM SPECIES 276829:C462K nidx=null parent=93PZ8]
Charagia ingens
 - Charagia ingens Walker, 1856 [SYNONYM SPECIES 272972:9696Z nidx=null parent=BSF7N]
 + Charagia ingens Walker, 1865 [SYNONYM SPECIES 276829:C462N nidx=null parent=8J8K]
Chebbites
 - Chebbites Klug, 2001 [ACCEPTED GENUS 272972:BSJ67 nidx=null]
 + Chebbites [ACCEPTED GENUS 276829:BYC9P nidx=null]
Cheiloceras
 - Cheiloceras Frech, 1897 [ACCEPTED GENUS 272972:BSJ68 nidx=null]
 + Cheiloceras [ACCEPTED GENUS 276829:BYCCM nidx=null]
 + Cheiloceras [ACCEPTED SUBGENUS 276829:BYCCN nidx=null]
Cheiloceratidae
 - Cheiloceratidae Frech, 1897 [ACCEPTED FAMILY 272972:BSGYT nidx=null]
 + Cheiloceratidae [ACCEPTED FAMILY 276829:BWZ74 nidx=null]
Chekiangoceras
 - Chekiangoceras Ruzhentsev, 1974 [ACCEPTED GENUS 272972:BSJ6C nidx=null]
 + Chekiangoceras [ACCEPTED GENUS 276829:BYCK5 nidx=null]
Cheloniceras
 - Cheloniceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSJ6D nidx=null]
 + Cheloniceras [ACCEPTED GENUS 276829:BYCNZ nidx=null]
Chengxianites
 - Chengxianites Xu, 1977 [ACCEPTED GENUS 272972:BSJ6F nidx=null]
 + Chengxianites [ACCEPTED GENUS 276829:BYCS4 nidx=null]
Chermes (Dreyfusia) abietis-piceae
 - Chermes (Dreyfusia) abietis-piceae Stebbing, 1903 [SYNONYM SPECIES 272972:BSQSL nidx=null parent=8QW2S]
 + Chermes (Dreyfusia) abietis-piceae Stebbing, 1903 [SYNONYM SPECIES 276829:CCX43 nidx=null parent=8QW2S]
Chesapeakiceras
 - Chesapeakiceras Kennedy & Cobban, 1998 [ACCEPTED GENUS 272972:BSJ6K nidx=null]
 + Chesapeakiceras [ACCEPTED GENUS 276829:BYCVV nidx=null]
Chigaroceras
 - Chigaroceras Howarth, 1992 [ACCEPTED GENUS 272972:BSJ6L nidx=null]
 + Chigaroceras [ACCEPTED GENUS 276829:BYCXB nidx=null]
Chimbuites
 - Chimbuites Casey & Glaessner, 1958 [ACCEPTED GENUS 272972:BSJ6N nidx=null]
 + Chimbuites [ACCEPTED GENUS 276829:BYD3H nidx=null]
Chinamecaceras
 - Chinamecaceras Cantu-Chapa, 2006 [ACCEPTED GENUS 272972:BSJ6P nidx=null]
 + Chinamecaceras [ACCEPTED GENUS 276829:BYD49 nidx=null]
Chinitnites
 - Chinitnites Imlay, 1975 [ACCEPTED GENUS 272972:BSJ6Q nidx=null]
 + Chinitnites [ACCEPTED GENUS 276829:BYD4S nidx=null]
Chioceras
 - Chioceras Renz & Renz, 1948 [ACCEPTED GENUS 272972:BSJ6R nidx=null]
 + Chioceras [ACCEPTED GENUS 276829:BYD63 nidx=null]
Chiotites
 - Chiotites (Renz & Renz, 1948) [SYNONYM GENUS 272972:BSMZ2 nidx=null parent=BSMZ3]
 + Chiotites [ACCEPTED SUBGENUS 276829:C5XDT nidx=null]
Chiratites
 - Chiratites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSJ6V nidx=null]
 + Chiratites [ACCEPTED GENUS 276829:BYD75 nidx=null]
Chlupacites
 - Chlupacites Becker & House, 1994 [ACCEPTED GENUS 272972:BSJ73 nidx=null]
 + Chlupacites [ACCEPTED GENUS 276829:BYF2X nidx=null]
Choctawites
 - Choctawites Korn & Titus, 2015 [ACCEPTED GENUS 272972:BSJ74 nidx=null]
 + Choctawites [ACCEPTED GENUS 276829:BYF3R nidx=null]
Choffaticeras
 - Choffaticeras (Hyatt, 1903) [ACCEPTED GENUS 272972:BSJ78 nidx=null]
 + Choffaticeras [ACCEPTED GENUS 276829:BYF4B nidx=null]
 + Choffaticeras [ACCEPTED SUBGENUS 276829:BYF4C nidx=null]
Choicensisphinctes
 - Choicensisphinctes Leanza, 1980 [ACCEPTED GENUS 272972:BSJ7D nidx=null]
 + Choicensisphinctes [ACCEPTED GENUS 276829:BYF4D nidx=null]
Chondrostega pastrana
 - Chondrostega pastrana Lederer, 1858 [ACCEPTED SPECIES 272972:92Y4D nidx=null]
 + Chondrostega pastrana Lederer, 1858 [ACCEPTED SPECIES 276829:DFGP7 nidx=null]
Choragia
 - Choragia Herrich-Schäffer, 1855 [SYNONYM GENUS 272972:BSDVP nidx=null parent=93N7V]
 + Choragia Pagenstecher, 1909 [SYNONYM GENUS 276829:95JBG nidx=null parent=93N7V]
Choristoceras
 - Choristoceras Hauer, 1865 [ACCEPTED GENUS 272972:BSJ7M nidx=null]
 + Choristoceras [ACCEPTED GENUS 276829:BYFFJ nidx=null]
Choristocerataceae
 - Choristocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGTX nidx=null]
 + Choristocerataceae [ACCEPTED SUPERFAMILY 276829:BWXDQ nidx=null]
Choristoceratidae
 - Choristoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSGYW nidx=null]
 + Choristoceratidae [ACCEPTED FAMILY 276829:BWZ8P nidx=null]
Christioceras
 - Christioceras Nassichuk & Furnish, 1965 [ACCEPTED GENUS 272972:BSJ7N nidx=null]
 + Christioceras [ACCEPTED GENUS 276829:BYFMP nidx=null]
Christioceratidae
 - Christioceratidae Nassichuk & Furnish, 1965 [ACCEPTED FAMILY 272972:BSGYX nidx=null]
 + Christioceratidae [ACCEPTED FAMILY 276829:BWZ8Q nidx=null]
Christolia
 - Christolia Rollier, 1909 [ACCEPTED GENUS 272972:BSJ7P nidx=null]
 + Christolia [ACCEPTED GENUS 276829:BYFMQ nidx=null]
Chrotogonus (Chrotogonus) senegalensis
 - Chrotogonus (Chrotogonus) senegalensis Krauss, 1877 [ACCEPTED SPECIES 272972:5YJTT nidx=null]
 + Chrotogonus (Chrotogonus) senegalensis Krauss, 1877 [ACCEPTED SPECIES 276829:CD59B nidx=null]
Chulacaridae
 - Chulacaridae [ACCEPTED FAMILY 272972:624BZ nidx=null]
 + Chulacaridae Fuangarworn, Lekprayoon & Butcher, 2016 [PROVISIONALLY_ACCEPTED FAMILY 276829:BWZ94 nidx=null]
Chumazites
 - Chumazites Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSJ7V nidx=null]
 + Chumazites [ACCEPTED GENUS 276829:BYFWC nidx=null]
Churkites
 - Churkites Okuneva, 1990 [ACCEPTED GENUS 272972:BSJ7W nidx=null]
 + Churkites [ACCEPTED GENUS 276829:BYFWY nidx=null]
Chutoceras
 - Chutoceras Becker & House, 2000 [ACCEPTED GENUS 272972:BSJ7X nidx=null]
 + Chutoceras [ACCEPTED GENUS 276829:BYFX5 nidx=null]
Cibolaites
 - Cibolaites Cobban & Hook, 1983 [ACCEPTED GENUS 272972:BSJ7Y nidx=null]
 + Cibolaites [ACCEPTED GENUS 276829:BYFXQ nidx=null]
Cibolites
 - Cibolites Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSJ7Z nidx=null]
 + Cibolites [ACCEPTED GENUS 276829:BYFXR nidx=null]
Cicindela connata
 - Cicindela connata Beuthin, 1893 unavailable name [AMBIGUOUS_SYNONYM SPECIES 272972:8L9TG nidx=null parent=8MJ75]
 + Cicindela connata Beuthin, 1893 [AMBIGUOUS_SYNONYM SPECIES 276829:CD8SJ nidx=null parent=8MJ75]
 + Cicindela connata Beuthin, 1892 [AMBIGUOUS_SYNONYM SPECIES 276829:CD8SK nidx=null parent=8MF5K]
Cieneguiticeras
 - Cieneguiticeras Parent et al., 2010 [ACCEPTED GENUS 272972:BSJ83 nidx=null]
 + Cieneguiticeras [ACCEPTED GENUS 276829:BYFZ5 nidx=null]
Cirroceras
 - Cirroceras Conrad, 1866 [ACCEPTED GENUS 272972:BSJ88 nidx=null]
 + Cirroceras [ACCEPTED GENUS 276829:BYG7V nidx=null]
Cladiscites
 - Cladiscites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSJ8C nidx=null]
 + Cladiscites [ACCEPTED GENUS 276829:BYGCY nidx=null]
Cladiscitidae
 - Cladiscitidae Zittel, 1884 [ACCEPTED FAMILY 272972:BSGYY nidx=null]
 + Cladiscitidae [ACCEPTED FAMILY 276829:BWZ9M nidx=null]
Clariondites
 - Clariondites Bockwinkel et al., 2009 [ACCEPTED GENUS 272972:BSJ8F nidx=null]
 + Clariondites [ACCEPTED GENUS 276829:BYGF8 nidx=null]
Clastoteuthis
 - Clastoteuthis Lang, 1928 [ACCEPTED GENUS 272972:BSJ8H nidx=null]
 + Clastoteuthis [ACCEPTED GENUS 276829:BYGFH nidx=null]
Clauseniceras
 - Clauseniceras Becker & House, 1993 [ACCEPTED GENUS 272972:BSJ8J nidx=null]
 + Clauseniceras [ACCEPTED GENUS 276829:BYGGD nidx=null]
Cleogastroplites
 - Cleogastroplites Jeletzky, 1980 [ACCEPTED GENUS 272972:BSJ8K nidx=null]
 + Cleogastroplites [ACCEPTED GENUS 276829:BYGLL nidx=null]
Cleoniceras
 - Cleoniceras Parona & Bonarelli, 1897 [ACCEPTED GENUS 272972:BSJ8L nidx=null]
 + Cleoniceras [ACCEPTED GENUS 276829:BYGLN nidx=null]
 + Cleoniceras [ACCEPTED SUBGENUS 276829:BYGLP nidx=null]
Clinolobus
 - Clinolobus Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSJ8P nidx=null]
 + Clinolobus [ACCEPTED GENUS 276829:BYGP8 nidx=null]
Clionites
 - Clionites (Mojsisovics, 1893) [SYNONYM GENUS 272972:BSJ8Q nidx=null parent=BSJ8S]
 + Clionites [ACCEPTED GENUS 276829:BYGQJ nidx=null]
 + Clionites [ACCEPTED GENUS 276829:BYGQK nidx=null]
Clionitites
 - Clionitites Strand, 1929 [ACCEPTED GENUS 272972:BSJ8S nidx=null]
 + Clionitites [ACCEPTED GENUS 276829:BYGQL nidx=null]
Clionititidae
 - Clionititidae Arabu, 1932 [SYNONYM FAMILY 272972:BSGZ2 nidx=null parent=BT333]
 + Clionititidae [ACCEPTED FAMILY 276829:BWZB8 nidx=null]
Clistoceras
 - Clistoceras Nassichuk, 1967 [ACCEPTED GENUS 272972:BSJ8Z nidx=null]
 + Clistoceras [ACCEPTED GENUS 276829:BYGQY nidx=null]
Cluthoceras
 - Cluthoceras (Currie, 1954) [ACCEPTED GENUS 272972:BSJ94 nidx=null]
 + Cluthoceras [ACCEPTED GENUS 276829:BYGTR nidx=null]
Clydoniceratidae
 - Clydoniceratidae Buckman, 1924 [ACCEPTED FAMILY 272972:BSGZ3 nidx=null]
 + Clydoniceratidae [ACCEPTED FAMILY 276829:BWZBG nidx=null]
Clydonitaceae
 - Clydonitaceae Mojsisovics, 1879 [ACCEPTED SUPERFAMILY 272972:BSGTZ nidx=null]
 + Clydonitaceae [ACCEPTED SUPERFAMILY 276829:BWXDY nidx=null]
Clydonites
 - Clydonites Hauer, 1860 [ACCEPTED GENUS 272972:BSJ97 nidx=null]
 + Clydonites [ACCEPTED GENUS 276829:BYGV4 nidx=null]
Clydonitidae
 - Clydonitidae Mojsisovics, 1879 [ACCEPTED FAMILY 272972:BSGZ4 nidx=null]
 + Clydonitidae [ACCEPTED FAMILY 276829:BWZBH nidx=null]
Clymenia
 - Clymenia (Münster, 1834) [ACCEPTED GENUS 272972:BSFTL nidx=null]
 + Clymenia [ACCEPTED GENUS 276829:BV639 nidx=null]
Clymeniaceae
 - Clymeniaceae Edwards, 1849 [ACCEPTED SUPERFAMILY 272972:BSGV2 nidx=null]
 + Clymeniaceae [ACCEPTED SUPERFAMILY 276829:BWXDZ nidx=null]
Clymeniidae
 - Clymeniidae Edwards, 1849 [ACCEPTED FAMILY 272972:BSGZ5 nidx=null]
 + Clymeniidae [ACCEPTED FAMILY 276829:BWZBJ nidx=null]
Clypeoceras
 - Clypeoceras Smith, 1913 [ACCEPTED GENUS 272972:BSJ98 nidx=null]
 + Clypeoceras [ACCEPTED GENUS 276829:BYGW9 nidx=null]
Clypeoceras pusillum
 - Clypeoceras pusillum Shevyrev, 1990 [SYNONYM SPECIES 272972:BSR7L nidx=null parent=3YQGY]
 + Clypeoceras pusillum Smith, 1932 [SYNONYM SPECIES 276829:CDKN9 nidx=null parent=3YQGY]
Clypeoceratoides
 - Clypeoceratoides Dagis & Ermakova, 1990 [ACCEPTED GENUS 272972:BSJ99 nidx=null]
 + Clypeoceratoides [ACCEPTED GENUS 276829:BYGWC nidx=null]
Clypeoceratoides kulensis
 - Clypeoceratoides kulensis (Bychkov et al., 1976) [SYNONYM SPECIES 272972:BSR7M nidx=null parent=BSWM2]
 + Clypeoceratoides kulensis (Bytschkov, 1976) [ACCEPTED SPECIES 276829:CDKNB nidx=null]
Clypites
 - Clypites Waagen, 1895 [ACCEPTED GENUS 272972:BSJ9B nidx=null]
 + Clypites [ACCEPTED GENUS 276829:BYGY9 nidx=null]
Coahuilites
 - Coahuilites Böse, 1928 [ACCEPTED GENUS 272972:BSJ9D nidx=null]
 + Coahuilites [ACCEPTED GENUS 276829:BYH9S nidx=null]
Cobbanites
 - Cobbanites Imlay, 1962 [ACCEPTED GENUS 272972:BSJ9F nidx=null]
 + Cobbanites [ACCEPTED GENUS 276829:BYHDP nidx=null]
Cochloceratidae
 - Cochloceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSGZ6 nidx=null]
 + Cochloceratidae [ACCEPTED FAMILY 276829:BWZBT nidx=null]
Cochlocrioceras
 - Cochlocrioceras Spath, 1950 [ACCEPTED GENUS 272972:BSJ9G nidx=null]
 + Cochlocrioceras [ACCEPTED GENUS 276829:BYHMN nidx=null]
Codazziceras
 - Codazziceras Etayo Serna, 1979 [ACCEPTED GENUS 272972:BSJ9H nidx=null]
 + Codazziceras [ACCEPTED GENUS 276829:BYHNW nidx=null]
Coeloceras
 - Coeloceras (Hyatt, 1867) [ACCEPTED GENUS 272972:BSJ9J nidx=null]
 + Coeloceras [ACCEPTED GENUS 276829:BYHRT nidx=null]
Coeloceratidae
 - Coeloceratidae Haug, 1910 [ACCEPTED FAMILY 272972:BSGZ7 nidx=null]
 + Coeloceratidae [ACCEPTED FAMILY 276829:BWZC3 nidx=null]
Coilopoceras
 - Coilopoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSJ9L nidx=null]
 + Coilopoceras [ACCEPTED GENUS 276829:BYHTH nidx=null]
Coilopoceratidae
 - Coilopoceratidae Hyatt, 1903 [ACCEPTED FAMILY 272972:BSGZ9 nidx=null]
 + Coilopoceratidae [ACCEPTED FAMILY 276829:BWZCC nidx=null]
Collignoniceras
 - Collignoniceras (Breistroffer, 1947) [ACCEPTED GENUS 272972:BSJ9M nidx=null]
 + Collignoniceras [ACCEPTED GENUS 276829:BYHX3 nidx=null]
Collignoniceratidae
 - Collignoniceratidae Wright & Wright, 1951 [ACCEPTED FAMILY 272972:BSFXT nidx=null]
 + Collignoniceratidae [ACCEPTED FAMILY 276829:BV9QB nidx=null]
Collignonicerites
 - Collignonicerites Kennedy et al., 2001 [ACCEPTED GENUS 272972:BSJ9P nidx=null]
 + Collignonicerites [ACCEPTED GENUS 276829:BYHX4 nidx=null]
Collignonites
 - Collignonites Bando, 1977 [ACCEPTED GENUS 272972:BSJ9Q nidx=null]
 + Collignonites [ACCEPTED GENUS 276829:BYHX5 nidx=null]
Collina
 - Collina (Bonarelli, 1893) [ACCEPTED GENUS 272972:BSGDL nidx=null]
 + Collina [ACCEPTED GENUS 276829:BW268 nidx=null]
Collotites
 - Collotites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJ9R nidx=null]
 + Collotites [ACCEPTED GENUS 276829:BYHY4 nidx=null]
Colombiceras
 - Colombiceras Spath, 1923 [ACCEPTED GENUS 272972:BSJ9S nidx=null]
 + Colombiceras [ACCEPTED GENUS 276829:BYHZF nidx=null]
Columbisculites
 - Columbisculites Tozer, 1994 [ACCEPTED GENUS 272972:BSJB3 nidx=null]
 + Columbisculites [ACCEPTED GENUS 276829:BYJ4N nidx=null]
Columbites
 - Columbites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSJB4 nidx=null]
 + Columbites [ACCEPTED GENUS 276829:BYJ4P nidx=null]
Columbitidae
 - Columbitidae Spath, 1934 [ACCEPTED FAMILY 272972:BSGZB nidx=null]
 + Columbitidae [ACCEPTED FAMILY 276829:BWZD2 nidx=null]
Columboceras
 - Columboceras Bucher, 2002 [ACCEPTED GENUS 272972:BSJB5 nidx=null]
 + Columboceras [ACCEPTED GENUS 276829:BYJ4R nidx=null]
Concavites
 - Concavites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJB6 nidx=null]
 + Concavites [ACCEPTED GENUS 276829:BYJ8Q nidx=null]
Conlinoceras
 - Conlinoceras (Cobban & Scott, 1972) [ACCEPTED GENUS 272972:BSJB7 nidx=null]
 + Conlinoceras [ACCEPTED GENUS 276829:BYJFS nidx=null]
Conobelus
 - Conobelus Stolley, 1919 [ACCEPTED GENUS 272972:BSJBB nidx=null]
 + Conobelus [ACCEPTED GENUS 276829:BYJFY nidx=null]
Conocephalus (Anisoptera) bilineatus
 - Conocephalus (Anisoptera) bilineatus (Erichson, 1842) [ACCEPTED SPECIES 272972:BSJC7 nidx=null]
 + Conocephalus (Anisoptera) bilineatus (Erichson, 1842) [ACCEPTED SPECIES 276829:BYKSM nidx=null]
Conocephalus (Chloroxiphidion) semivittatus
 - Conocephalus (Chloroxiphidion) semivittatus (Walker, 1869) [SYNONYM SPECIES 272972:9GPFB nidx=null parent=5GKTQ]
 + Conocephalus (Chloroxiphidion) semivittatus (Walker, 1869) [SYNONYM SPECIES 276829:BYKSR nidx=null parent=5GKTQ]
Constrigymnites
 - Constrigymnites Bucher, 1992 [ACCEPTED GENUS 272972:BSJBC nidx=null]
 + Constrigymnites [ACCEPTED GENUS 276829:BYJLB nidx=null]
Convoluticeras
 - Convoluticeras (Erben, 1960) [ACCEPTED GENUS 272972:BSJBD nidx=null]
 + Convoluticeras [ACCEPTED GENUS 276829:BYJMX nidx=null]
Cophinoceras
 - Cophinoceras Whitehouse, 1928 [ACCEPTED GENUS 272972:BSJBH nidx=null]
 + Cophinoceras [ACCEPTED GENUS 276829:BYJP3 nidx=null]
Cordillerites
 - Cordillerites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSJBJ nidx=null]
 + Cordillerites [ACCEPTED GENUS 276829:BYJYP nidx=null]
Coroceras
 - Coroceras (Hyatt, 1877) [ACCEPTED GENUS 272972:BSJBQ nidx=null]
 + Coroceras [ACCEPTED GENUS 276829:BYK6J nidx=null]
Coroniceras
 - Coroniceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSJBW nidx=null]
 + Coroniceras [ACCEPTED GENUS 276829:BYK7Q nidx=null]
Coryphe
 - Coryphe MacLeay, 1838 [SYNONYM GENUS 272972:62NXR nidx=null parent=8CY5]
 + Coryphe Gistel, 1848 [SYNONYM GENUS 276829:BYKF5 nidx=null parent=BWG96]
Coscaites
 - Coscaites Guex et al., 2005 [ACCEPTED GENUS 272972:BSJBZ nidx=null]
 + Coscaites [ACCEPTED GENUS 276829:BYKFY nidx=null]
Costaclymeniidae
 - Costaclymeniidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSGZD nidx=null]
 + Costaclymeniidae [ACCEPTED FAMILY 276829:BWZFL nidx=null]
Costamanticoceras
 - Costamanticoceras Becker & House, 1993 [ACCEPTED GENUS 272972:BSJC2 nidx=null]
 + Costamanticoceras [ACCEPTED GENUS 276829:BYKJ7 nidx=null]
Costigymnites
 - Costigymnites Krystyn & Tatzreiter, 1991 [ACCEPTED GENUS 272972:BSJC4 nidx=null]
 + Costigymnites [ACCEPTED GENUS 276829:BYKLB nidx=null]
Courtilloticeras
 - Courtilloticeras Guex et al., 2005 [ACCEPTED GENUS 272972:BSJC5 nidx=null]
 + Courtilloticeras [ACCEPTED GENUS 276829:BYKQT nidx=null]
Cowboyiceras
 - Cowboyiceras Guex et al., 2005 [ACCEPTED GENUS 272972:BSJC6 nidx=null]
 + Cowboyiceras [ACCEPTED GENUS 276829:BYKQZ nidx=null]
Crassotornoceras
 - Crassotornoceras House & Price, 1985 [ACCEPTED GENUS 272972:BSJCB nidx=null]
 + Crassotornoceras [ACCEPTED GENUS 276829:BYKXZ nidx=null]
Cravenoceras
 - Cravenoceras Bisat, 1928 [ACCEPTED GENUS 272972:BSJCC nidx=null]
 + Cravenoceras [ACCEPTED GENUS 276829:BYL2S nidx=null]
Cravenoceratidae
 - Cravenoceratidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSGZG nidx=null]
 + Cravenoceratidae [ACCEPTED FAMILY 276829:BWZG7 nidx=null]
Cravenoceratoides
 - Cravenoceratoides Hudson, 1941 [ACCEPTED GENUS 272972:BSJCD nidx=null]
 + Cravenoceratoides [ACCEPTED GENUS 276829:BYL2T nidx=null]
Crestaites
 - Crestaites Rulleau & Elmi, 2001 [ACCEPTED GENUS 272972:BSJCF nidx=null]
 + Crestaites [ACCEPTED GENUS 276829:BYL7Y nidx=null]
Crickites
 - Crickites Wedekind, 1913 [ACCEPTED GENUS 272972:BSJCG nidx=null]
 + Crickites [ACCEPTED GENUS 276829:BYLHP nidx=null]
Crimites
 - Crimites Toumansky, 1937 [ACCEPTED GENUS 272972:BSJCH nidx=null]
 + Crimites [ACCEPTED GENUS 276829:BYLJH nidx=null]
Crioceras
 - Crioceras (d'Orbigny, 1842) [SYNONYM GENUS 272972:BSJCJ nidx=null parent=BSJCL]
 + Crioceras [ACCEPTED GENUS 276829:BYLLV nidx=null]
Crioceratites
 - Crioceratites Leveillé, 1837 [ACCEPTED GENUS 272972:BSJCL nidx=null]
 + Crioceratites [ACCEPTED GENUS 276829:BYLLZ nidx=null]
 + Crioceratites [ACCEPTED SUBGENUS 276829:BYLM2 nidx=null]
Crispoceras
 - Crispoceras (Chlupac & Turek, 1983) [ACCEPTED GENUS 272972:BSJCQ nidx=null]
 + Crispoceras [ACCEPTED GENUS 276829:BYLNT nidx=null]
Croyites
 - Croyites Korn, 2001 [ACCEPTED GENUS 272972:BSJCT nidx=null]
 + Croyites [ACCEPTED GENUS 276829:BYLTB nidx=null]
Crucilobiceras
 - Crucilobiceras Buckman, 1920 [ACCEPTED GENUS 272972:BSJCW nidx=null]
 + Crucilobiceras [ACCEPTED GENUS 276829:BYLTL nidx=null]
Cryptobias ocellata
 - Cryptobias ocellata Dohrn, 1879 [SYNONYM SPECIES 272972:BMV4X nidx=null parent=BJMKB]
 + Cryptobias ocellata Dohrn, 1879 [SYNONYM SPECIES 276829:CFJS3 nidx=null parent=BJMKB]
Cryptometoicoceras
 - Cryptometoicoceras Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSJCX nidx=null]
 + Cryptometoicoceras [ACCEPTED GENUS 276829:BYLZX nidx=null]
Cryptotexanites
 - Cryptotexanites Kennedy & Cobban, 1993 [ACCEPTED GENUS 272972:BSJCY nidx=null]
 + Cryptotexanites [ACCEPTED GENUS 276829:BYM3T nidx=null]
Ctenoplusia (Acanthoplusia) latistigma floresiana
 - Ctenoplusia (Acanthoplusia) latistigma floresiana Behounek & Ronkay, 1999 [ACCEPTED SUBSPECIES 272972:98RFK nidx=null]
 + Ctenoplusia (Acanthoplusia) latistigma floresiana Behounek & Ronkay, 1999 [ACCEPTED SUBSPECIES 276829:DBLCF nidx=null]
Cubasphinctes
 - Cubasphinctes Chudoley & Furrazola, 1968 [ACCEPTED GENUS 272972:BSJCZ nidx=null]
 + Cubasphinctes [ACCEPTED GENUS 276829:BYMC4 nidx=null]
Cubaspidoceras
 - Cubaspidoceras Myczynski, 1976 [ACCEPTED GENUS 272972:BSJD2 nidx=null]
 + Cubaspidoceras [ACCEPTED GENUS 276829:BYMC5 nidx=null]
Cuccoceras
 - Cuccoceras Diener, 1907 [ACCEPTED GENUS 272972:BSJD3 nidx=null]
 + Cuccoceras [ACCEPTED GENUS 276829:BYMCV nidx=null]
Cunningtoniceras
 - Cunningtoniceras Collignon, 1937 [ACCEPTED GENUS 272972:BSJD4 nidx=null]
 + Cunningtoniceras [ACCEPTED GENUS 276829:BYMJC nidx=null]
Cuspiteuthis
 - Cuspiteuthis Abel, 1916 [ACCEPTED GENUS 272972:BSJD5 nidx=null]
 + Cuspiteuthis [ACCEPTED GENUS 276829:BYMR7 nidx=null]
Cycloceltites
 - Cycloceltites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSJD6 nidx=null]
 + Cycloceltites [ACCEPTED GENUS 276829:BYMYZ nidx=null]
Cycloceltitidae
 - Cycloceltitidae Tozer, 1979 [ACCEPTED FAMILY 272972:BSGZH nidx=null]
 + Cycloceltitidae [ACCEPTED FAMILY 276829:BWZJY nidx=null]
Cycloceratites
 - Cycloceratites (Schrammen, 1928) [SYNONYM GENUS 272972:BSMZ5 nidx=null parent=BSMZ6]
 + Cycloceratites [ACCEPTED SUBGENUS 276829:C5XPG nidx=null]
Cyclolobaceae
 - Cyclolobaceae Zittel, 1895 [ACCEPTED SUPERFAMILY 272972:BSFXC nidx=null]
 + Cyclolobaceae [ACCEPTED SUPERFAMILY 276829:BV9L4 nidx=null]
Cyclolobidae
 - Cyclolobidae Zittel, 1895 [ACCEPTED FAMILY 272972:BSGZJ nidx=null]
 + Cyclolobidae [ACCEPTED FAMILY 276829:BWZK4 nidx=null]
Cyclolobus
 - Cyclolobus (Waagen, 1879) [ACCEPTED GENUS 272972:BSJD7 nidx=null]
 + Cyclolobus [ACCEPTED GENUS 276829:BYN28 nidx=null]
Cymaclymenia
 - Cymaclymenia Hyatt, 1884 [ACCEPTED GENUS 272972:BSJDC nidx=null]
 + Cymaclymenia [ACCEPTED GENUS 276829:BYNKR nidx=null]
Cymaclymeniidae
 - Cymaclymeniidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSGZK nidx=null]
 + Cymaclymeniidae [ACCEPTED FAMILY 276829:BWZKJ nidx=null]
Cymahoplites
 - Cymahoplites Spath, 1922 [ACCEPTED GENUS 272972:BSJDD nidx=null]
 + Cymahoplites [ACCEPTED GENUS 276829:BYNKV nidx=null]
Cymbites
 - Cymbites Neumayr, 1878 [ACCEPTED GENUS 272972:BSJDG nidx=null]
 + Cymbites [ACCEPTED GENUS 276829:BYNND nidx=null]
Cymbitidae
 - Cymbitidae Buckman, 1919 [ACCEPTED FAMILY 272972:BSGZL nidx=null]
 + Cymbitidae [ACCEPTED FAMILY 276829:BWZKM nidx=null]
Cyrtochilus
 - Cyrtochilus Meek, 1876 [SYNONYM GENUS 272972:BSJDL nidx=null parent=BSM7F]
 + Cyrtochilus F. Sandberger, 1875 [ACCEPTED GENUS 276829:BYP3R nidx=null]
Cyrtoclymenia
 - Cyrtoclymenia (Hyatt, 1884) [ACCEPTED GENUS 272972:BSJDM nidx=null]
 + Cyrtoclymenia [ACCEPTED GENUS 276829:BYP3X nidx=null]
Cyrtoclymeniaceae
 - Cyrtoclymeniaceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGV3 nidx=null]
 + Cyrtoclymeniaceae [ACCEPTED SUPERFAMILY 276829:BWXG4 nidx=null]
Cyrtoclymeniidae
 - Cyrtoclymeniidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSGZM nidx=null]
 + Cyrtoclymeniidae [ACCEPTED FAMILY 276829:BWZL7 nidx=null]
Cyrtopleurites
 - Cyrtopleurites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSJDR nidx=null]
 + Cyrtopleurites [ACCEPTED GENUS 276829:BYP7C nidx=null]
Cyrtosiceras
 - Cyrtosiceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJDS nidx=null]
 + Cyrtosiceras [ACCEPTED GENUS 276829:BYP8W nidx=null]
Czarnoclymenia
 - Czarnoclymenia Korn, 1999 [ACCEPTED GENUS 272972:BSJDT nidx=null]
 + Czarnoclymenia [ACCEPTED GENUS 276829:BYPJ6 nidx=null]
Czekanowskites
 - Czekanowskites Diener, 1915 [ACCEPTED GENUS 272972:BSJDV nidx=null]
 + Czekanowskites [ACCEPTED GENUS 276829:BYPJ9 nidx=null]
Dactylioceras
 - Dactylioceras (Hyatt, 1867) [ACCEPTED GENUS 272972:BSJDX nidx=null]
 + Dactylioceras [ACCEPTED GENUS 276829:BYPQ3 nidx=null]
Dactylioceratidae
 - Dactylioceratidae Hyatt, 1867 [ACCEPTED FAMILY 272972:BSGZN nidx=null]
 + Dactylioceratidae [ACCEPTED FAMILY 276829:BWZLN nidx=null]
Dagnoceras
 - Dagnoceras Arthaber, 1911 [ACCEPTED GENUS 272972:BSJF8 nidx=null]
 + Dagnoceras [ACCEPTED GENUS 276829:BYPV7 nidx=null]
Daixites
 - Daixites Ruzhencev, 1941 [ACCEPTED GENUS 272972:BSJF9 nidx=null]
 + Daixites [ACCEPTED GENUS 276829:BYPYM nidx=null]
Dalaca obliquestrigata
 - Dalaca obliquestrigata Strand, 1914 [SYNONYM SPECIES 272972:B3YJ3 nidx=null parent=gnpY-qG7fgtzCphvkmvMb]
 + Dalaca obliquestrigata Strand, 1912 [SYNONYM SPECIES 276829:33YRC nidx=null parent=DFDGM]
Damesites
 - Damesites Matsumoto, 1942 [ACCEPTED GENUS 272972:BSJFF nidx=null]
 + Damesites [ACCEPTED GENUS 276829:BYQ3V nidx=null]
Danubitaceae
 - Danubitaceae Spath, 1951 [ACCEPTED SUPERFAMILY 272972:BSGV4 nidx=null]
 + Danubitaceae [ACCEPTED SUPERFAMILY 276829:BWXGC nidx=null]
Danubites
 - Danubites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSJFG nidx=null]
 + Danubites [ACCEPTED GENUS 276829:BYQ5M nidx=null]
Danubitidae
 - Danubitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSGZP nidx=null]
 + Danubitidae [ACCEPTED FAMILY 276829:BWZM4 nidx=null]
Daraelites
 - Daraelites Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSJFJ nidx=null]
 + Daraelites [ACCEPTED GENUS 276829:BYQ66 nidx=null]
Daraelitidae
 - Daraelitidae Tchernow, 1907 [ACCEPTED FAMILY 272972:BSGZQ nidx=null]
 + Daraelitidae [ACCEPTED FAMILY 276829:BWZM6 nidx=null]
Darkaoceras
 - Darkaoceras Bockwinkel et al., 2009 [ACCEPTED GENUS 272972:BSJFK nidx=null]
 + Darkaoceras [ACCEPTED GENUS 276829:BYQ6Z nidx=null]
Darvasiceras
 - Darvasiceras Leonova, 1990 [ACCEPTED GENUS 272972:BSFYQ nidx=null]
 + Darvasiceras [ACCEPTED GENUS 276829:BVBPV nidx=null]
Daubichites
 - Daubichites Popov, 1963 [ACCEPTED GENUS 272972:BSJFL nidx=null]
 + Daubichites [ACCEPTED GENUS 276829:BYQJ8 nidx=null]
Daxatina
 - Daxatina Strand, 1929 [ACCEPTED GENUS 272972:BSJFM nidx=null]
 + Daxatina [ACCEPTED GENUS 276829:BYQKY nidx=null]
Decliveites
 - Decliveites Aguirre-Urreta & Rawson, 2010 [ACCEPTED GENUS 272972:BSJFN nidx=null]
 + Decliveites [ACCEPTED GENUS 276829:BYQMK nidx=null]
Decorites
 - Decorites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSJFQ nidx=null]
 + Decorites [ACCEPTED GENUS 276829:BYQMZ nidx=null]
Delawarella
 - Delawarella (Collignon, 1948) [SYNONYM GENUS 272972:BSMZ8 nidx=null parent=BSMZ9]
 + Delawarella [ACCEPTED SUBGENUS 276829:C5XTW nidx=null]
Delepinoceras
 - Delepinoceras Miller & Furnish, 1954 [ACCEPTED GENUS 272972:BSJFR nidx=null]
 + Delepinoceras [ACCEPTED GENUS 276829:BYQWQ nidx=null]
Delepinoceratidae
 - Delepinoceratidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSGZR nidx=null]
 + Delepinoceratidae [ACCEPTED FAMILY 276829:BWZMK nidx=null]
Delphiceras
 - Delphiceras Becker & House, 2000 [ACCEPTED GENUS 272972:BSJFS nidx=null]
 + Delphiceras [ACCEPTED GENUS 276829:BYQYB nidx=null]
Delphinella
 - Delphinella Le Hegarat, 1973 [ACCEPTED GENUS 272972:BSGDY nidx=null]
 + Delphinella [ACCEPTED GENUS 276829:BW4QY nidx=null]
Delphinites
 - Delphinites Becker & House, 1993 [SYNONYM GENUS 272972:BSJFT nidx=null parent=BSJFS]
 - Delphinites Sayn, 1901 [ACCEPTED GENUS 272972:BSJFV nidx=null]
 + Delphinites [ACCEPTED GENUS 276829:BYQYN nidx=null]
Demarezites
 - Demarezites Ruzhencev, 1955 [ACCEPTED GENUS 272972:BSJFX nidx=null]
 + Demarezites [ACCEPTED GENUS 276829:BYR33 nidx=null]
Deroceras
 - Deroceras Hyatt, 1867 [SYNONYM GENUS 272972:BSFMV nidx=null parent=BT47S]
 + Deroceras Rafinesque, 1820 [ACCEPTED GENUS 276829:BTR65 nidx=null]
Deshayesitaceae
 - Deshayesitaceae Stoyanow, 1949 [ACCEPTED SUPERFAMILY 272972:BSGV5 nidx=null]
 + Deshayesitaceae [ACCEPTED SUPERFAMILY 276829:BWXGH nidx=null]
Deshayesites
 - Deshayesites Kazansky, 1914 [ACCEPTED GENUS 272972:BSJG4 nidx=null]
 + Deshayesites [ACCEPTED GENUS 276829:BYRHZ nidx=null]
Deshayesites deshayesi
 - Deshayesites deshayesi (d'Orbigny, 1841) [SYNONYM SPECIES 272972:BSRWF nidx=null parent=BSP93]
 + Deshayesites deshayesi (Leymerie, 1840) [ACCEPTED SPECIES 276829:CGJRJ nidx=null]
Deshayesitidae
 - Deshayesitidae Stoyanow, 1949 [ACCEPTED FAMILY 272972:BSGZS nidx=null]
 + Deshayesitidae [ACCEPTED FAMILY 276829:BWZN6 nidx=null]
Desmoceras
 - Desmoceras Zittel, 1884 [ACCEPTED GENUS 272972:BSJG6 nidx=null]
 + Desmoceras [ACCEPTED GENUS 276829:BYRJP nidx=null]
 + Desmoceras [ACCEPTED SUBGENUS 276829:BYRJQ nidx=null]
Desmocerataceae
 - Desmocerataceae Zittel, 1895 [ACCEPTED SUPERFAMILY 272972:BSFXD nidx=null]
 + Desmocerataceae [ACCEPTED SUPERFAMILY 276829:BV9L9 nidx=null]
Desmoceratidae
 - Desmoceratidae Zittel, 1895 [ACCEPTED FAMILY 272972:9GVKC nidx=null]
 + Desmoceratidae [ACCEPTED FAMILY 276829:BWZN8 nidx=null]
Desmophyllites
 - Desmophyllites Spath, 1829 [ACCEPTED GENUS 272972:BSJGD nidx=null]
 + Desmophyllites [ACCEPTED GENUS 276829:BYRKS nidx=null]
Detoniceras
 - Detoniceras Manfrin & Mietto, 1991 [ACCEPTED GENUS 272972:BSJGF nidx=null]
 + Detoniceras [ACCEPTED GENUS 276829:BYRMK nidx=null]
Devonopronorites
 - Devonopronorites Bogoslovsky, 1954 [ACCEPTED GENUS 272972:BSJGG nidx=null]
 + Devonopronorites [ACCEPTED GENUS 276829:BYRRD nidx=null]
Devonopronoritidae
 - Devonopronoritidae Bogoslovsky, 1958 [ACCEPTED FAMILY 272972:BSGZT nidx=null]
 + Devonopronoritidae [ACCEPTED FAMILY 276829:BWZNH nidx=null]
Deweveria
 - Deweveria Guex et al., 2005 [ACCEPTED GENUS 272972:BSJGH nidx=null]
 + Deweveria [ACCEPTED GENUS 276829:BYRRJ nidx=null]
Diaboloceras
 - Diaboloceras (Miller & Furnish, 1940) [ACCEPTED GENUS 272972:BSJGJ nidx=null]
 + Diaboloceras [ACCEPTED GENUS 276829:BYRTN nidx=null]
Diadochoceras
 - Diadochoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJGL nidx=null]
 + Diadochoceras [ACCEPTED GENUS 276829:BYRWC nidx=null]
Diallagites
 - Diallagites Klug, 2002 [ACCEPTED GENUS 272972:BSJGP nidx=null]
 + Diallagites [ACCEPTED GENUS 276829:BYRYH nidx=null]
Diamanticeras
 - Diamanticeras Vermeulen, 2004 [ACCEPTED GENUS 272972:BSJGQ nidx=null]
 + Diamanticeras [ACCEPTED GENUS 276829:BYRYT nidx=null]
Dichotomites
 - Dichotomites (Koenen, 1909) [ACCEPTED GENUS 272972:BSJGT nidx=null]
 + Dichotomites [ACCEPTED GENUS 276829:BYSCG nidx=null]
 + Dichotomites [ACCEPTED SUBGENUS 276829:BYSCH nidx=null]
Didymites
 - Didymites von Mojsisovics, 1875 [ACCEPTED GENUS 272972:BSJH2 nidx=null]
 + Didymites [ACCEPTED GENUS 276829:BYSLX nidx=null]
Didymitidae
 - Didymitidae Haug, 1894 [ACCEPTED FAMILY 272972:BSGZV nidx=null]
 + Didymitidae [ACCEPTED FAMILY 276829:BWZPQ nidx=null]
Didymoceras
 - Didymoceras (Hyatt, 1900) [ACCEPTED GENUS 272972:BSJH3 nidx=null]
 + Didymoceras [ACCEPTED GENUS 276829:BYSLZ nidx=null]
Dieneria
 - Dieneria Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSJH5 nidx=null]
 + Dieneria [ACCEPTED GENUS 276829:BYSMP nidx=null]
Dieneroceras
 - Dieneroceras Spath, 1934 [ACCEPTED GENUS 272972:BSJH6 nidx=null]
 + Dieneroceras [ACCEPTED GENUS 276829:BYSMQ nidx=null]
Dieneroceratidae
 - Dieneroceratidae Kummel, 1952 [ACCEPTED FAMILY 272972:BSGZW nidx=null]
 + Dieneroceratidae [ACCEPTED FAMILY 276829:BWZPV nidx=null]
Difuntites
 - Difuntites Glenister & Furnish, 1988 [ACCEPTED GENUS 272972:BSJH7 nidx=null]
 + Difuntites [ACCEPTED GENUS 276829:BYSNC nidx=null]
Dimeroceras
 - Dimeroceras Sepkoski, 2002 [ACCEPTED GENUS 272972:BSJH8 nidx=null]
 + Dimeroceras [ACCEPTED GENUS 276829:BYSZ6 nidx=null]
Dimeroceratidae
 - Dimeroceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSGZX nidx=null]
 + Dimeroceratidae [ACCEPTED FAMILY 276829:BWZQ5 nidx=null]
Dimeroceratoidea
 - Dimeroceratoidea Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGV6 nidx=null]
 + Dimeroceratoidea [ACCEPTED SUPERFAMILY 276829:BWXGM nidx=null]
Dimitobelidae
 - Dimitobelidae Whitehouse, 1924 [ACCEPTED FAMILY 272972:BSGZY nidx=null]
 + Dimitobelidae [ACCEPTED FAMILY 276829:BWZQ7 nidx=null]
Dimitobelus
 - Dimitobelus Whitehouse, 1925 [ACCEPTED GENUS 272972:BSJH9 nidx=null]
 + Dimitobelus [ACCEPTED GENUS 276829:BYSZB nidx=null]
 + Dimitobelus [ACCEPTED SUBGENUS 276829:BYSZC nidx=null]
Dimitocamax
 - Dimitocamax (Doyle, 1988) [SYNONYM GENUS 272972:BSMZC nidx=null parent=BSMZD]
 + Dimitocamax [ACCEPTED SUBGENUS 276829:C5XWN nidx=null]
Dimorphites
 - Dimorphites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSJHC nidx=null]
 + Dimorphites [ACCEPTED GENUS 276829:BYSZL nidx=null]
Dimorphoceras
 - Dimorphoceras Hyatt, 1883 [ACCEPTED GENUS 272972:BSJHG nidx=null]
 + Dimorphoceras [ACCEPTED GENUS 276829:BYSZP nidx=null]
Dimorphocerataceae
 - Dimorphocerataceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSFXF nidx=null]
 + Dimorphocerataceae [ACCEPTED SUPERFAMILY 276829:BV9LC nidx=null]
Dimorphoceratidae
 - Dimorphoceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSGZZ nidx=null]
 + Dimorphoceratidae [ACCEPTED FAMILY 276829:BWZQ8 nidx=null]
Dimorphoceratoides
 - Dimorphoceratoides Sepkoski, 2002 [ACCEPTED GENUS 272972:BSJHH nidx=null]
 + Dimorphoceratoides [ACCEPTED GENUS 276829:BYSZQ nidx=null]
Dimorphotoceras
 - Dimorphotoceras Spath, 1951 [ACCEPTED GENUS 272972:BSJHJ nidx=null]
 + Dimorphotoceras [ACCEPTED GENUS 276829:BYT2B nidx=null]
Dinaritaceae
 - Dinaritaceae Mojsisovics, 1882 [ACCEPTED SUPERFAMILY 272972:BSGV7 nidx=null]
 + Dinaritaceae [ACCEPTED SUPERFAMILY 276829:BWXGN nidx=null]
Dinarites
 - Dinarites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSJHK nidx=null]
 + Dinarites [ACCEPTED GENUS 276829:BYT2R nidx=null]
Dinaritidae
 - Dinaritidae Mojsisovics, 1882 [ACCEPTED FAMILY 272972:BSH22 nidx=null]
 + Dinaritidae [ACCEPTED FAMILY 276829:BWZQD nidx=null]
Diplomoceras
 - Diplomoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJHM nidx=null]
 + Diplomoceras [ACCEPTED GENUS 276829:BYTK3 nidx=null]
Diplomoceratidae
 - Diplomoceratidae Spath, 1926 [ACCEPTED FAMILY 272972:BSH23 nidx=null]
 + Diplomoceratidae [ACCEPTED FAMILY 276829:BWZQZ nidx=null]
Dipoloceras
 - Dipoloceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSFYR nidx=null]
 + Dipoloceras [ACCEPTED GENUS 276829:BVBR7 nidx=null]
 + Dipoloceras [ACCEPTED SUBGENUS 276829:BVBR8 nidx=null]
Dipoloceratidae
 - Dipoloceratidae (Spath, 1921) [SYNONYM FAMILY 272972:BSH24 nidx=null parent=BTJZQ]
 + Dipoloceratidae [ACCEPTED FAMILY 276829:BWZRC nidx=null]
Dipoloceroides
 - Dipoloceroides (Breistroffer, 1947) [SYNONYM GENUS 272972:BSMZK nidx=null parent=BSMZL]
 + Dipoloceroides [ACCEPTED SUBGENUS 276829:C5XX2 nidx=null]
Dipterotheca
 - Dipterotheca Sch.Bip. ex Hochst. [SYNONYM UNRANKED 272972:5T8ZC nidx=null parent=345V]
 + Dipterotheca Sch.Bip. ex Hochst. [SYNONYM UNRANKED 276829:D7NRC nidx=null parent=345V]
Discoclymenia
 - Discoclymenia Hyatt, 1884 [ACCEPTED GENUS 272972:BSJHP nidx=null]
 + Discoclymenia [ACCEPTED GENUS 276829:BYTRZ nidx=null]
Discogymnites
 - Discogymnites Tozer, 1994 [ACCEPTED GENUS 272972:BSJHQ nidx=null]
 + Discogymnites [ACCEPTED GENUS 276829:BYTSS nidx=null]
Discoidellia
 - Discoidellia Vermeulen, 1995 [ACCEPTED GENUS 272972:BSJHR nidx=null]
 + Discoidellia [ACCEPTED GENUS 276829:BYTT5 nidx=null]
Discomalayites
 - Discomalayites Tozer, 1994 [ACCEPTED GENUS 272972:BSJHS nidx=null]
 + Discomalayites [ACCEPTED GENUS 276829:BYTTM nidx=null]
Discophiceras
 - Discophiceras (Spath, 1935) [SYNONYM GENUS 272972:BSMZM nidx=null parent=BSMZN]
 + Discophiceras [ACCEPTED SUBGENUS 276829:C5XX8 nidx=null]
Discophyllites
 - Discophyllites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSJHT nidx=null]
 + Discophyllites [ACCEPTED GENUS 276829:BYTVC nidx=null]
Discophyllitidae
 - Discophyllitidae Spath, 1927 [ACCEPTED FAMILY 272972:BSH25 nidx=null]
 + Discophyllitidae [ACCEPTED FAMILY 276829:BWZRX nidx=null]
Discoproptychites
 - Discoproptychites Kiparisova, 1956 [ACCEPTED GENUS 272972:BSJHW nidx=null]
 + Discoproptychites [ACCEPTED GENUS 276829:BYTVN nidx=null]
Discoptychites
 - Discoptychites Diener, 1916 [ACCEPTED GENUS 272972:BSJHX nidx=null]
 + Discoptychites [ACCEPTED GENUS 276829:BYTVV nidx=null]
Discoscaphites
 - Discoscaphites (Meek, 1870) [ACCEPTED GENUS 272972:BSJHY nidx=null]
 + Discoscaphites [ACCEPTED GENUS 276829:BYTXD nidx=null]
Discostyrites
 - Discostyrites Tozer, 1994 [ACCEPTED GENUS 272972:BSJJ3 nidx=null]
 + Discostyrites [ACCEPTED GENUS 276829:BYTYC nidx=null]
Discotropites
 - Discotropites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSJJ4 nidx=null]
 + Discotropites [ACCEPTED GENUS 276829:BYTYV nidx=null]
Dissimilites
 - Dissimilites Sarkar, 1954 [ACCEPTED GENUS 272972:BSJJ5 nidx=null]
 + Dissimilites [ACCEPTED GENUS 276829:BYV45 nidx=null]
Distichites
 - Distichites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSJJB nidx=null]
 + Distichites [ACCEPTED GENUS 276829:BYV7P nidx=null]
Distichitidae
 - Distichitidae Diener, 1920 [ACCEPTED FAMILY 272972:BSH26 nidx=null]
 + Distichitidae [ACCEPTED FAMILY 276829:BWZS4 nidx=null]
Distoloceras
 - Distoloceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJJC nidx=null]
 + Distoloceras [ACCEPTED GENUS 276829:BYVBJ nidx=null]
Diuraphis (Diuraphis) noxia
 - Diuraphis (Diuraphis) noxia (Mordvilko, 1913) [ACCEPTED SPECIES 272972:BSJJH nidx=null]
 + Diuraphis (Diuraphis) noxia (Mordvilko, 1913) [ACCEPTED SPECIES 276829:BYVG4 nidx=null]
Dixieceras
 - Dixieceras Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSJJG nidx=null]
 + Dixieceras [ACCEPTED GENUS 276829:BYVFH nidx=null]
Docidoceras
 - Docidoceras Buckman, 1919 [ACCEPTED GENUS 272972:BSJJL nidx=null]
 + Docidoceras [ACCEPTED GENUS 276829:BYVJB nidx=null]
 + Docidoceras [ACCEPTED SUBGENUS 276829:BYVJC nidx=null]
Domanikoceras
 - Domanikoceras Becker & House, 1993 [ACCEPTED GENUS 272972:BSJJQ nidx=null]
 + Domanikoceras [ACCEPTED GENUS 276829:BYVYZ nidx=null]
Dombarigloria
 - Dombarigloria Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSJJR nidx=null]
 + Dombarigloria [ACCEPTED GENUS 276829:BYVZ3 nidx=null]
Dombarites
 - Dombarites Librovitch, 1957 [ACCEPTED GENUS 272972:BSJJS nidx=null]
 + Dombarites [ACCEPTED GENUS 276829:BYVZ4 nidx=null]
Dombarocanites
 - Dombarocanites Ruzhencev, 1949 [ACCEPTED GENUS 272972:BSJJT nidx=null]
 + Dombarocanites [ACCEPTED GENUS 276829:BYVZ5 nidx=null]
Dorikranites
 - Dorikranites Hyatt, 1889 [ACCEPTED GENUS 272972:BSJJW nidx=null]
 + Dorikranites [ACCEPTED GENUS 276829:BYW55 nidx=null]
Doryceras
 - Doryceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSJJX nidx=null]
 + Doryceras [ACCEPTED GENUS 276829:BYW7S nidx=null]
Doulingoceras
 - Doulingoceras Zhou, 1985 [ACCEPTED GENUS 272972:BSJJY nidx=null]
 + Doulingoceras [ACCEPTED GENUS 276829:BYW9W nidx=null]
Douvilleiceras
 - Douvilleiceras Grossouvre, 1894 [ACCEPTED GENUS 272972:BSJJZ nidx=null]
 + Douvilleiceras [ACCEPTED GENUS 276829:BYWB4 nidx=null]
Douvilleicerataceae
 - Douvilleicerataceae Parona & Bonarelli, 1897 [ACCEPTED SUPERFAMILY 272972:BSGV8 nidx=null]
 + Douvilleicerataceae [ACCEPTED SUPERFAMILY 276829:BWXH6 nidx=null]
Douvilleiceratidae
 - Douvilleiceratidae Parona & Bonarelli, 1897 [ACCEPTED FAMILY 272972:BSH28 nidx=null]
 + Douvilleiceratidae [ACCEPTED FAMILY 276829:BWZSW nidx=null]
Drepana x z nigrum
 - Drepana x z nigrum Bryk, 1942 [SYNONYM SPECIES 272972:BSX4P nidx=null parent=96M54]
 + Drepana x z nigrum Bryk, 1942 [SYNONYM SPECIES 276829:CYPWQ nidx=null parent=96M54]
Drepanaphis hjirayamae
 - Drepanaphis hjirayamae [SYNONYM SPECIES 272972:B72GK nidx=null parent=4F328]
 + Drepanaphis hjirayamae [SYNONYM SPECIES 276829:CH6XD nidx=null parent=4F328]
Drepanites
 - Drepanites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSJK5 nidx=null]
 + Drepanites [ACCEPTED GENUS 276829:BYWDL nidx=null]
Dronovites
 - Dronovites Shevyrev, 1990 [ACCEPTED GENUS 272972:BSJK6 nidx=null]
 + Dronovites [ACCEPTED GENUS 276829:BYWHN nidx=null]
Dronovitidae
 - Dronovitidae Shevyrev, 1990 [ACCEPTED FAMILY 272972:BSH29 nidx=null]
 + Dronovitidae [ACCEPTED FAMILY 276829:BWZTD nidx=null]
Drumoceras
 - Drumoceras Wang & He, 1976 [ACCEPTED GENUS 272972:BSJK7 nidx=null]
 + Drumoceras [ACCEPTED GENUS 276829:BYWHT nidx=null]
Druzeticia
 - Druzeticia Korn & Sudar, 2016 [ACCEPTED GENUS 272972:BSJK8 nidx=null]
 + Druzeticia [ACCEPTED GENUS 276829:BYWHZ nidx=null]
Dryojuvavites
 - Dryojuvavites Tozer, 1994 [ACCEPTED GENUS 272972:BSJK9 nidx=null]
 + Dryojuvavites [ACCEPTED GENUS 276829:BYWJV nidx=null]
Dubariceras
 - Dubariceras Dommergues et al., 1984 [ACCEPTED GENUS 272972:BSJKB nidx=null]
 + Dubariceras [ACCEPTED GENUS 276829:BYWKG nidx=null]
Dudresnayiceras
 - Dudresnayiceras Rakus, 1994 [ACCEPTED GENUS 272972:BSJKC nidx=null]
 + Dudresnayiceras [ACCEPTED GENUS 276829:BYWKZ nidx=null]
Dufrenoyia
 - Dufrenoyia (Kilian & Reboul, 1915) [SYNONYM GENUS 272972:BSMZQ nidx=null parent=BSMZR]
 + Dufrenoyia [ACCEPTED SUBGENUS 276829:C5Y28 nidx=null]
Dumbletonius sylvicola
 - Dumbletonius sylvicola Dugdale, 1988 [SYNONYM SPECIES 272972:92ZTS nidx=null parent=93YY2]
 + Dumbletonius sylvicola Dugdale, 1986 [SYNONYM SPECIES 276829:382CY nidx=null parent=93YY2]
Dunbarites
 - Dunbarites Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSJKF nidx=null]
 + Dunbarites [ACCEPTED GENUS 276829:BYWNF nidx=null]
Dunedinites
 - Dunedinites Tozer, 1963 [ACCEPTED GENUS 272972:BSJKG nidx=null]
 + Dunedinites [ACCEPTED GENUS 276829:BYWP2 nidx=null]
Dunveganoceras
 - Dunveganoceras Warren & Stelck, 1940 [ACCEPTED GENUS 272972:BSJKH nidx=null]
 + Dunveganoceras [ACCEPTED GENUS 276829:BYWPC nidx=null]
Dushanoceras
 - Dushanoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSJKJ nidx=null]
 + Dushanoceras [ACCEPTED GENUS 276829:BYWQT nidx=null]
Duvalia
 - Duvalia Bayle, 1878 [ACCEPTED GENUS 272972:BSGFR nidx=null]
 + Duvalia [ACCEPTED GENUS 276829:BW6SR nidx=null]
Duvaliidae
 - Duvaliidae Pavlow, 1914 [ACCEPTED FAMILY 272972:BSH2C nidx=null]
 + Duvaliidae [ACCEPTED FAMILY 276829:BWZTS nidx=null]
Dysaphis (Dysaphis) lappae
 - Dysaphis (Dysaphis) lappae (Koch, 1854) [ACCEPTED SPECIES 272972:386WD nidx=null]
 + Dysaphis (Dysaphis) lappae (Koch, 1854) [ACCEPTED SPECIES 276829:BYWDF nidx=null]
Dysaphis (Dysaphis) newskyi
 - Dysaphis (Dysaphis) newskyi (Börner, 1940) [ACCEPTED SPECIES 272972:386WR nidx=null]
 + Dysaphis (Dysaphis) newskyi (Börner, 1940) [ACCEPTED SPECIES 276829:CGZYB nidx=null]
Dysaphis (Dysaphis) rumecicola
 - Dysaphis (Dysaphis) rumecicola (Hori, 1927) [ACCEPTED SPECIES 272972:BSS49 nidx=null]
 + Dysaphis (Dysaphis) rumecicola (Hori, 1927) [ACCEPTED SPECIES 276829:CGZZL nidx=null]
Dysaphis (Dysaphis) sharmai
 - Dysaphis (Dysaphis) sharmai [ACCEPTED SPECIES 272972:BSS8B nidx=null]
 + Dysaphis (Dysaphis) sharmai [ACCEPTED SPECIES 276829:CH8MC nidx=null]
Dysaphis (Dysaphis) sibirica
 - Dysaphis (Dysaphis) sibirica [ACCEPTED SPECIES 272972:386XB nidx=null]
 + Dysaphis (Dysaphis) sibirica [ACCEPTED SPECIES 276829:CH8MG nidx=null]
Dysaphis (Dysaphis) vandenboschi
 - Dysaphis (Dysaphis) vandenboschi Stroyan, 1972 [ACCEPTED SPECIES 272972:386XN nidx=null]
 + Dysaphis (Dysaphis) vandenboschi Stroyan, 1972 [ACCEPTED SPECIES 276829:CGZZR nidx=null]
Dysaphis (Pomaphis) pyraria
 - Dysaphis (Pomaphis) pyraria [ACCEPTED SPECIES 272972:BSS88 nidx=null]
 + Dysaphis (Pomaphis) pyraria [ACCEPTED SPECIES 276829:CH8M4 nidx=null]
Dysonia (Dissonulichen)
 - Dysonia (Dissonulichen) Cadena-Castañeda, 2011 [SYNONYM INFRAGENERIC_NAME 272972:BMKJ2 nidx=null parent=8PVSF]
 + Dysonia (Dissonulichen) Cadena-Castañeda, 2011 [SYNONYM INFRAGENERIC_NAME 276829:C5Y2F nidx=null parent=8PVSF]
Dzhaprakoceras
 - Dzhaprakoceras Popov, 1965 [ACCEPTED GENUS 272972:BSJKK nidx=null]
 + Dzhaprakoceras [ACCEPTED GENUS 276829:BYWY4 nidx=null]
Dzhulfites
 - Dzhulfites Shevyrev, 1965 [ACCEPTED GENUS 272972:BSJKL nidx=null]
 + Dzhulfites [ACCEPTED GENUS 276829:BYWY9 nidx=null]
Dzhulfitidae
 - Dzhulfitidae Shevyrev, 1965 [ACCEPTED FAMILY 272972:BSH2D nidx=null]
 + Dzhulfitidae [ACCEPTED FAMILY 276829:BWZTY nidx=null]
Dzhulfoceras
 - Dzhulfoceras Ruzhencev, 1962 [ACCEPTED GENUS 272972:BSJKM nidx=null]
 + Dzhulfoceras [ACCEPTED GENUS 276829:BYWYC nidx=null]
Ebbighausenites
 - Ebbighausenites Korn et al., 2016 [ACCEPTED GENUS 272972:BSJKN nidx=null]
 + Ebbighausenites [ACCEPTED GENUS 276829:BYX3D nidx=null]
Echioceras
 - Echioceras Bayle, 1878 [ACCEPTED GENUS 272972:BSJKP nidx=null]
 + Echioceras [ACCEPTED GENUS 276829:BYXFF nidx=null]
Echioceratidae
 - Echioceratidae Buckman, 1913 [ACCEPTED FAMILY 272972:BSH2F nidx=null]
 + Echioceratidae [ACCEPTED FAMILY 276829:BWZVH nidx=null]
Eckhardites
 - Eckhardites Mitta, 1999 [ACCEPTED GENUS 272972:BSJKQ nidx=null]
 + Eckhardites [ACCEPTED GENUS 276829:BYXH5 nidx=null]
Ecto
 - Ecto Hübner, 1820 [SYNONYM GENUS 272972:BSDMX nidx=null parent=92D6G]
 + Ecto Pagenstecher, 1909 [SYNONYM GENUS 276829:94MTW nidx=null parent=92D6G]
Ectocentrites
 - Ectocentrites Canavari, 1888 [ACCEPTED GENUS 272972:BSJKX nidx=null]
 + Ectocentrites [ACCEPTED GENUS 276829:BYXKP nidx=null]
Ectolcites
 - Ectolcites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSJKY nidx=null]
 + Ectolcites [ACCEPTED GENUS 276829:BYXL2 nidx=null]
Edmooroceras
 - Edmooroceras (Elias, 1956) [ACCEPTED GENUS 272972:BSJKZ nidx=null]
 + Edmooroceras [ACCEPTED GENUS 276829:BYXPX nidx=null]
Elenaella
 - Elenaella (Nikolov, 1966) [ACCEPTED GENUS 272972:BSJLB nidx=null]
 + Elenaella [ACCEPTED GENUS 276829:BYYGS nidx=null]
Eleniceras
 - Eleniceras Breskovski, 1967 [ACCEPTED GENUS 272972:BSJLF nidx=null]
 + Eleniceras [ACCEPTED GENUS 276829:BYYHK nidx=null]
Elephantoceras
 - Elephantoceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSJLG nidx=null]
 + Elephantoceras [ACCEPTED GENUS 276829:BYYJR nidx=null]
Elephastomus
 - Elephastomus MacLeay, 1819 [ACCEPTED GENUS 272972:632HH nidx=null]
 + Elephastomus MacLeay, 1819 [ACCEPTED GENUS 276829:DFGPP nidx=null]
Elobiceras
 - Elobiceras Spath, 1922 [ACCEPTED GENUS 272972:BSJLX nidx=null]
 + Elobiceras [ACCEPTED GENUS 276829:BYYYQ nidx=null]
Elobiceras lobitoense
 - Elobiceras lobitoense Crick, 1922 [ACCEPTED SPECIES 272972:BSSCC nidx=null]
 + Elobiceras lobitoense Spath, 1922 [ACCEPTED SPECIES 276829:CHM8B nidx=null]
Emilites
 - Emilites Ruzhencev, 1938 [ACCEPTED GENUS 272972:BSJLZ nidx=null]
 + Emilites [ACCEPTED GENUS 276829:BYZ65 nidx=null]
Endoclyta
 - Endoclyta Felder, 1874 [SYNONYM GENUS 272972:BPJJ8 nidx=null parent=927ZD]
 + Endoclyta C. & R. Felder, 1875 [SYNONYM GENUS 276829:93NLL nidx=null parent=927ZD]
Endosiphonites
 - Endosiphonites Ansted, 1838 [ACCEPTED GENUS 272972:BSJM9 nidx=null]
 + Endosiphonites [ACCEPTED GENUS 276829:BYZPM nidx=null]
Engonioloboceras
 - Engonioloboceras Librovitch, 1957 [ACCEPTED GENUS 272972:BSJMF nidx=null]
 + Engonioloboceras [ACCEPTED GENUS 276829:BYZSX nidx=null]
Engonoceras
 - Engonoceras Neumayr & Uhlig, 1881 [ACCEPTED GENUS 272972:BSJMG nidx=null]
 + Engonoceras [ACCEPTED GENUS 276829:BYZSZ nidx=null]
Engonoceratidae
 - Engonoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH2J nidx=null]
 + Engonoceratidae [ACCEPTED FAMILY 276829:BWZZ5 nidx=null]
Engonoceratoidea
 - Engonoceratoidea Hyatt, 1903 [ACCEPTED SUPERFAMILY 272972:BSGV9 nidx=null]
 + Engonoceratoidea [ACCEPTED SUPERFAMILY 276829:BWXHN nidx=null]
Enkebergoceras
 - Enkebergoceras Becker, 2002 [ACCEPTED GENUS 272972:BSJMH nidx=null]
 + Enkebergoceras [ACCEPTED GENUS 276829:BYZWG nidx=null]
Enseites
 - Enseites Becker & House, 1993 [ACCEPTED GENUS 272972:BSJMK nidx=null]
 + Enseites [ACCEPTED GENUS 276829:BZ22N nidx=null]
Entogonites
 - Entogonites Kittl, 1904 [ACCEPTED GENUS 272972:BSJMM nidx=null]
 + Entogonites [ACCEPTED GENUS 276829:BZ286 nidx=null]
Entogonitidae
 - Entogonitidae Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED FAMILY 272972:BSH2K nidx=null]
 + Entogonitidae [ACCEPTED FAMILY 276829:BWZZP nidx=null]
Eoamaltheus
 - Eoamaltheus Hillebrandt, 1981 [ACCEPTED GENUS 272972:BSJMQ nidx=null]
 + Eoamaltheus [ACCEPTED GENUS 276829:BZ2CV nidx=null]
Eoaraxoceras
 - Eoaraxoceras Spinosa et al., 1970 [ACCEPTED GENUS 272972:BSJMR nidx=null]
 + Eoaraxoceras [ACCEPTED GENUS 276829:BZ2D4 nidx=null]
Eoasianites
 - Eoasianites Ruzhencev, 1933 [ACCEPTED GENUS 272972:BSJMS nidx=null]
 + Eoasianites [ACCEPTED GENUS 276829:BZ2DB nidx=null]
Eobeloceras
 - Eobeloceras Schindewolf, 1936 [ACCEPTED GENUS 272972:BSJMW nidx=null]
 + Eobeloceras [ACCEPTED GENUS 276829:BZ2DM nidx=null]
Eoboesites
 - Eoboesites (Ruzhentsev & Bogoslovskaya, 1978) [ACCEPTED GENUS 272972:BSMZV nidx=null]
 + Eoboesites [ACCEPTED SUBGENUS 276829:C5Y55 nidx=null]
Eocanadoceras
 - Eocanadoceras (Anderson, 1958) [SYNONYM GENUS 272972:BSMZX nidx=null parent=56LS]
 + Eocanadoceras [ACCEPTED SUBGENUS 276829:C5Y58 nidx=null]
Eocanites
 - Eocanites Librovitch, 1957 [ACCEPTED GENUS 272972:BSJMX nidx=null]
 + Eocanites [ACCEPTED GENUS 276829:BZ2F9 nidx=null]
Eocephalites
 - Eocephalites Imlay, 1967 [ACCEPTED GENUS 272972:BSJMY nidx=null]
 + Eocephalites [ACCEPTED GENUS 276829:BZ2FR nidx=null]
Eocrioceratites
 - Eocrioceratites Wiedmann, 1973 [ACCEPTED GENUS 272972:BSJMZ nidx=null]
 + Eocrioceratites [ACCEPTED GENUS 276829:BZ2GF nidx=null]
Eocylindroteuthis
 - Eocylindroteuthis Riegraf, 1980 [ACCEPTED GENUS 272972:BSJN2 nidx=null]
 + Eocylindroteuthis [ACCEPTED GENUS 276829:BZ2GL nidx=null]
Eodanubites
 - Eodanubites Wang, 1978 [ACCEPTED GENUS 272972:BSJN3 nidx=null]
 + Eodanubites [ACCEPTED GENUS 276829:BZ2H6 nidx=null]
Eoderoceras
 - Eoderoceras (Spath, 1925) [ACCEPTED GENUS 272972:BSJN4 nidx=null]
 + Eoderoceras [ACCEPTED GENUS 276829:BZ2HC nidx=null]
Eoderocerataceae
 - Eoderocerataceae Spath, 1929 [ACCEPTED SUPERFAMILY 272972:BSGVB nidx=null]
 + Eoderocerataceae [ACCEPTED SUPERFAMILY 276829:BWXHV nidx=null]
Eoderoceratidae
 - Eoderoceratidae Spath, 1929 [ACCEPTED FAMILY 272972:BSH2L nidx=null]
 + Eoderoceratidae [ACCEPTED FAMILY 276829:BX22F nidx=null]
Eogaudryceras
 - Eogaudryceras Spath, 1927 [ACCEPTED GENUS 272972:BSJN6 nidx=null]
 + Eogaudryceras [ACCEPTED GENUS 276829:BZ2KY nidx=null]
 + Eogaudryceras [ACCEPTED SUBGENUS 276829:BZ2KZ nidx=null]
Eoglyphioceras
 - Eoglyphioceras Brüning, 1923 [ACCEPTED GENUS 272972:BSJN9 nidx=null]
 + Eoglyphioceras [ACCEPTED GENUS 276829:BZ2LC nidx=null]
Eogonioloboceras
 - Eogonioloboceras Librovitch, 1957 [ACCEPTED GENUS 272972:BSFYV nidx=null]
 + Eogonioloboceras [ACCEPTED GENUS 276829:BVBT7 nidx=null]
Eogonioloboceratidae
 - Eogonioloboceratidae Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED FAMILY 272972:BSFXV nidx=null]
 + Eogonioloboceratidae [ACCEPTED FAMILY 276829:BV9RM nidx=null]
Eogymnites
 - Eogymnites Spath, 1951 [ACCEPTED GENUS 272972:BSJNB nidx=null]
 + Eogymnites [ACCEPTED GENUS 276829:BZ2LH nidx=null]
Eogymnotoceras
 - Eogymnotoceras Bucher, 1988 [ACCEPTED GENUS 272972:BSJNC nidx=null]
 + Eogymnotoceras [ACCEPTED GENUS 276829:BZ2LJ nidx=null]
Eohyattoceras
 - Eohyattoceras Glenister & Furnish, 1987 [ACCEPTED GENUS 272972:BSJND nidx=null]
 + Eohyattoceras [ACCEPTED GENUS 276829:BZ2M6 nidx=null]
Eojiangxiceras
 - Eojiangxiceras Qin, 1986 [ACCEPTED GENUS 272972:BSJNF nidx=null]
 + Eojiangxiceras [ACCEPTED GENUS 276829:BZ2MD nidx=null]
Eoleptoceras
 - Eoleptoceras Manolov, 1962 [SYNONYM GENUS 272972:BSJNG nidx=null parent=BSK4W]
 + Eoleptoceras [ACCEPTED GENUS 276829:BZ2Q5 nidx=null]
Eolytoceras
 - Eolytoceras Frebold, 1967 [ACCEPTED GENUS 272972:BSJNJ nidx=null]
 + Eolytoceras [ACCEPTED GENUS 276829:BZ2QT nidx=null]
Eomarshallites
 - Eomarshallites Medina & Rinaldi, 1986 [ACCEPTED GENUS 272972:BSJNK nidx=null]
 + Eomarshallites [ACCEPTED GENUS 276829:BZ2RG nidx=null]
Eonathorstites
 - Eonathorstites Tozer, 1994 [ACCEPTED GENUS 272972:BSJNL nidx=null]
 + Eonathorstites [ACCEPTED GENUS 276829:BZ2SX nidx=null]
Eonomismoceras
 - Eonomismoceras Kusina, 1974 [ACCEPTED GENUS 272972:BSJNM nidx=null]
 + Eonomismoceras [ACCEPTED GENUS 276829:BZ2T6 nidx=null]
Eopaquiericeras
 - Eopaquiericeras Cantu-Chapa, 2006 [ACCEPTED GENUS 272972:BSJNN nidx=null]
 + Eopaquiericeras [ACCEPTED GENUS 276829:BZ2V8 nidx=null]
Eoparalegoceras
 - Eoparalegoceras (Delépine, 1939) [ACCEPTED GENUS 272972:BSJNP nidx=null]
 + Eoparalegoceras [ACCEPTED GENUS 276829:BZ2VC nidx=null]
Eophyllites
 - Eophyllites Spath, 1930 [ACCEPTED GENUS 272972:BSJNR nidx=null]
 + Eophyllites [ACCEPTED GENUS 276829:BZ2WX nidx=null]
Eoprotrachyceras
 - Eoprotrachyceras Tozer, 1980 [ACCEPTED GENUS 272972:BSJNS nidx=null]
 + Eoprotrachyceras [ACCEPTED GENUS 276829:BZ2XG nidx=null]
Eopsiloceras
 - Eopsiloceras Spath, 1930 [ACCEPTED GENUS 272972:BSJNT nidx=null]
 + Eopsiloceras [ACCEPTED GENUS 276829:BZ2XN nidx=null]
Eosagenites
 - Eosagenites Tozer, 1971 [ACCEPTED GENUS 272972:BSJNV nidx=null]
 + Eosagenites [ACCEPTED GENUS 276829:BZ2YC nidx=null]
Eosagenitidae
 - Eosagenitidae Tozer, 1994 [ACCEPTED FAMILY 272972:BSH2M nidx=null]
 + Eosagenitidae [ACCEPTED FAMILY 276829:BX23F nidx=null]
Eoscaphites
 - Eoscaphites Breistroffer, 1947 [ACCEPTED GENUS 272972:BSJNW nidx=null]
 + Eoscaphites [ACCEPTED GENUS 276829:BZ2YV nidx=null]
Eoschistoceras
 - Eoschistoceras Ruzhencev, 1952 [ACCEPTED GENUS 272972:BSJNX nidx=null]
 + Eoschistoceras [ACCEPTED GENUS 276829:BZ2Z8 nidx=null]
Eoshumardites
 - Eoshumardites Popov, 1960 [ACCEPTED GENUS 272972:BSJNY nidx=null]
 + Eoshumardites [ACCEPTED GENUS 276829:BZ324 nidx=null]
Eoshumarditidae
 - Eoshumarditidae Kutygin, 2016 [ACCEPTED FAMILY 272972:BSH2N nidx=null]
 + Eoshumarditidae [ACCEPTED FAMILY 276829:BX23S nidx=null]
Eosteinmannites
 - Eosteinmannites Tatzreiter, 1980 [ACCEPTED GENUS 272972:BSJNZ nidx=null]
 + Eosteinmannites [ACCEPTED GENUS 276829:BZ335 nidx=null]
Eosturia
 - Eosturia Bando & Ehiro, 1982 [ACCEPTED GENUS 272972:BSJP2 nidx=null]
 + Eosturia [ACCEPTED GENUS 276829:BZ33D nidx=null]
Eothetidites
 - Eothetidites Tozer, 1994 [ACCEPTED GENUS 272972:BSJP3 nidx=null]
 + Eothetidites [ACCEPTED GENUS 276829:BZ34B nidx=null]
Eothinites
 - Eothinites Ruzhencev, 1933 [ACCEPTED GENUS 272972:BSJP4 nidx=null]
 + Eothinites [ACCEPTED GENUS 276829:BZ34F nidx=null]
Eotissotia
 - Eotissotia Barber, 1957 [ACCEPTED GENUS 272972:BSJP5 nidx=null]
 + Eotissotia [ACCEPTED GENUS 276829:BZ34R nidx=null]
Eowellerites
 - Eowellerites Ruzhencev, 1957 [ACCEPTED GENUS 272972:BSJP6 nidx=null]
 + Eowellerites [ACCEPTED GENUS 276829:BZ35P nidx=null]
Epacrochordiceras pustericum
 - Epacrochordiceras pustericum (Mojsisovics, 1878) [SYNONYM SPECIES 272972:BSSF9 nidx=null parent=9LQN]
 + Epacrochordiceras pustericum (Mojsisovics, 1882) [SYNONYM SPECIES 276829:CHW9Q nidx=null parent=9LQN]
Epadrianites
 - Epadrianites Schindewolf, 1931 [ACCEPTED GENUS 272972:BSJP7 nidx=null]
 + Epadrianites [ACCEPTED GENUS 276829:BZ36D nidx=null]
Eparietites
 - Eparietites Spath, 1924 [ACCEPTED GENUS 272972:BSJP8 nidx=null]
 + Eparietites [ACCEPTED GENUS 276829:BZ36H nidx=null]
Epiboreoceras
 - Epiboreoceras Dagys, 1999 [ACCEPTED GENUS 272972:BSJPC nidx=null]
 + Epiboreoceras [ACCEPTED GENUS 276829:BZ3BM nidx=null]
Epicanites
 - Epicanites Schindewolf, 1926 [ACCEPTED GENUS 272972:BSJPD nidx=null]
 + Epicanites [ACCEPTED GENUS 276829:BZ3BT nidx=null]
Epiceltites
 - Epiceltites Arthaber, 1911 [ACCEPTED GENUS 272972:BSJPF nidx=null]
 + Epiceltites [ACCEPTED GENUS 276829:BZ3CC nidx=null]
Epiceltitoides
 - Epiceltitoides Guex, 1978 [ACCEPTED GENUS 272972:BSJPG nidx=null]
 + Epiceltitoides [ACCEPTED GENUS 276829:BZ3CD nidx=null]
Epiceratites
 - Epiceratites Diener, 1915 [ACCEPTED GENUS 272972:BSJPH nidx=null]
 + Epiceratites [ACCEPTED GENUS 276829:BZ3CH nidx=null]
Epiglyphioceras
 - Epiglyphioceras Spath, 1930 [ACCEPTED GENUS 272972:BSJPK nidx=null]
 + Epiglyphioceras [ACCEPTED GENUS 276829:BZ3FT nidx=null]
Epigymnites
 - Epigymnites Diener, 1916 [ACCEPTED GENUS 272972:BSJPL nidx=null]
 + Epigymnites [ACCEPTED GENUS 276829:BZ3FX nidx=null]
Epijuresanites
 - Epijuresanites Popov, 1970 [ACCEPTED GENUS 272972:BSJPM nidx=null]
 + Epijuresanites [ACCEPTED GENUS 276829:BZ3FZ nidx=null]
Epijuvavites
 - Epijuvavites Krystyn, 1982 [ACCEPTED GENUS 272972:BSJPN nidx=null]
 + Epijuvavites [ACCEPTED GENUS 276829:BZ3G2 nidx=null]
Epimayaites
 - Epimayaites Spath, 1928 [ACCEPTED GENUS 272972:BSJPP nidx=null]
 + Epimayaites [ACCEPTED GENUS 276829:BZ3GS nidx=null]
Epiolus exul
 - Epiolus exul Herrich-Schäffer, 1855 [SYNONYM SPECIES 272972:BSDRK nidx=null parent=BSF57]
 + Epiolus exul Herrich-Schäffer, [1853] [SYNONYM SPECIES 276829:96Q7D nidx=null parent=3BZ45]
Epiolus giganteus
 - Epiolus giganteus Herrich-Schäffer, 1855 [SYNONYM SPECIES 272972:BSDQX nidx=null parent=BSF5N]
 + Epiolus giganteus Herrich-Schäffer, [1853] [SYNONYM SPECIES 276829:96Q7F nidx=null parent=58GY4]
Epiolus hyalinatus
 - Epiolus hyalinatus Herrich-Schäffer, 1855 [SYNONYM SPECIES 272972:BSDNW nidx=null parent=BSF7N]
 + Epiolus hyalinatus Herrich-Schäffer, [1853] [SYNONYM SPECIES 276829:93ZCN nidx=null parent=8J8K]
Epipallasiceras
 - Epipallasiceras (Spath, 1936) [ACCEPTED GENUS 272972:BSJPQ nidx=null]
 + Epipallasiceras [ACCEPTED GENUS 276829:BZ3HF nidx=null]
Episageceras
 - Episageceras Noetling, 1904 [ACCEPTED GENUS 272972:BSJPT nidx=null]
 + Episageceras [ACCEPTED GENUS 276829:BZ3QW nidx=null]
Episculites
 - Episculites Spath, 1951 [ACCEPTED GENUS 272972:BSJPV nidx=null]
 + Episculites [ACCEPTED GENUS 276829:BZ3R6 nidx=null]
Episculitidae
 - Episculitidae (Spath, 1951) [SYNONYM FAMILY 272972:BSH2P nidx=null parent=BTJV3]
 + Episculitidae [ACCEPTED FAMILY 276829:BX24X nidx=null]
Epitauroceras
 - Epitauroceras Glenister & Furnish, 1988 [ACCEPTED GENUS 272972:BSJPW nidx=null]
 + Epitauroceras [ACCEPTED GENUS 276829:BZ3T7 nidx=null]
Epithalassoceras
 - Epithalassoceras Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSJPX nidx=null]
 + Epithalassoceras [ACCEPTED GENUS 276829:BZ3TQ nidx=null]
Epitornoceras
 - Epitornoceras (Frech, 1902) [ACCEPTED GENUS 272972:BSJPY nidx=null]
 + Epitornoceras [ACCEPTED GENUS 276829:BZ3W2 nidx=null]
Epiwocklumeria
 - Epiwocklumeria Schindewolf, 1937 [ACCEPTED GENUS 272972:BSJQ3 nidx=null]
 + Epiwocklumeria [ACCEPTED GENUS 276829:BZ3W5 nidx=null]
Epophioceras
 - Epophioceras Spath, 1924 [ACCEPTED GENUS 272972:BSJQ4 nidx=null]
 + Epophioceras [ACCEPTED GENUS 276829:BZ3XF nidx=null]
Erbenoceras
 - Erbenoceras (Bogoslovsky, 1962) [ACCEPTED GENUS 272972:BSJQ5 nidx=null]
 + Erbenoceras [ACCEPTED GENUS 276829:BZ3YG nidx=null]
Erfoudites
 - Erfoudites Korn, 1999 [ACCEPTED GENUS 272972:BSJQ8 nidx=null]
 + Erfoudites [ACCEPTED GENUS 276829:BZ434 nidx=null]
Erinoceras
 - Erinoceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSJQ9 nidx=null]
 + Erinoceras [ACCEPTED GENUS 276829:BZ45H nidx=null]
Erioliceras
 - Erioliceras Sepkoski, 2002 [ACCEPTED GENUS 272972:BSJQB nidx=null]
 + Erioliceras [ACCEPTED GENUS 276829:BZ467 nidx=null]
Eriosoma (Schizoneura) ulmi
 - Eriosoma (Schizoneura) ulmi [AMBIGUOUS_SYNONYM SPECIES 272972:BSSF2 nidx=null parent=3B6C8]
 + Eriosoma (Schizoneura) ulmi [AMBIGUOUS_SYNONYM SPECIES 276829:CHTW4 nidx=null parent=8P9NH]
 + Eriosoma (Schizoneura) ulmi [AMBIGUOUS_SYNONYM SPECIES 276829:CHTW5 nidx=null parent=3B6C8]
 + Eriosoma (Schizoneura) ulmi (Linnaeus, 1758) [AMBIGUOUS_SYNONYM SPECIES 276829:CHTW7 nidx=null parent=3B6DC]
Eriosoma laniger
 - Eriosoma laniger [SYNONYM SPECIES 272972:B7Z3V nidx=null parent=6H365]
 + Eriosoma laniger [SYNONYM SPECIES 276829:BYZSL nidx=null parent=6H365]
Ermoceras
 - Ermoceras Douvillé, 1916 [ACCEPTED GENUS 272972:BSJQG nidx=null]
 + Ermoceras [ACCEPTED GENUS 276829:BZ4B2 nidx=null]
Ernstbrunnia
 - Ernstbrunnia Zeiss, 2001 [ACCEPTED GENUS 272972:BSJQJ nidx=null]
 + Ernstbrunnia [ACCEPTED GENUS 276829:BZ4BG nidx=null]
Ervatamia
 - Ervatamia (A.DC.) Stapf [SYNONYM UNRANKED 272972:5T9L9 nidx=null parent=7RQH]
 + Ervatamia (A.DC.) Stapf [SYNONYM UNRANKED 276829:BW97K nidx=null parent=7RQH]
Erycitoides
 - Erycitoides Westermann, 1964 [ACCEPTED GENUS 272972:BSJQM nidx=null]
 + Erycitoides [ACCEPTED GENUS 276829:BZ4D9 nidx=null]
Erymnocerites
 - Erymnocerites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJQN nidx=null]
 + Erymnocerites [ACCEPTED GENUS 276829:BZ4DC nidx=null]
Escarguelites
 - Escarguelites Brühwiler et al., 2012 [ACCEPTED GENUS 272972:BSJQP nidx=null]
 + Escarguelites [ACCEPTED GENUS 276829:BZ4FS nidx=null]
Eschericeratites
 - Eschericeratites Guex et al., 2005 [ACCEPTED GENUS 272972:BSJQQ nidx=null]
 + Eschericeratites [ACCEPTED GENUS 276829:BZ4G6 nidx=null]
Etoushanoceras
 - Etoushanoceras Yang & Xiong, 1990 [ACCEPTED GENUS 272972:BSJQR nidx=null]
 + Etoushanoceras [ACCEPTED GENUS 276829:BZ4LJ nidx=null]
Eubaculites
 - Eubaculites Spath, 1926 [ACCEPTED GENUS 272972:BSJQX nidx=null]
 + Eubaculites [ACCEPTED GENUS 276829:BZ4R2 nidx=null]
Eucalycoceras
 - Eucalycoceras (Spath, 1923) [ACCEPTED GENUS 272972:BSJQY nidx=null]
 + Eucalycoceras [ACCEPTED GENUS 276829:BZ4SN nidx=null]
Eudalaca exul
 - Eudalaca exul (Herrich-Schäffer, 1855) [ACCEPTED SPECIES 272972:BSF57 nidx=null]
 + Eudalaca exul (Herrich-Schäffer, [1853]) [ACCEPTED SPECIES 276829:3BZ45 nidx=null]
Eudalaca troglodytes
 - Eudalaca troglodytes Janse, 1919 [SYNONYM SPECIES 272972:BSDPC nidx=null parent=3BZ4R]
 + Eudalaca troglodytes Janse, 1942 [SYNONYM SPECIES 276829:94SKP nidx=null parent=3BZ4R]
Eudissoceras
 - Eudissoceras Miller & Owen, 1937 [ACCEPTED GENUS 272972:BSJR3 nidx=null]
 + Eudissoceras [ACCEPTED GENUS 276829:BZ5HS nidx=null]
Euflemingites
 - Euflemingites Spath, 1934 [ACCEPTED GENUS 272972:BSJR5 nidx=null]
 + Euflemingites [ACCEPTED GENUS 276829:BZ5S9 nidx=null]
Euhystrichoceras
 - Euhystrichoceras Spath, 1923 [ACCEPTED GENUS 272972:BSJR9 nidx=null]
 + Euhystrichoceras [ACCEPTED GENUS 276829:BZ5YJ nidx=null]
Euisculites
 - Euisculites Spath, 1951 [ACCEPTED GENUS 272972:BSJRB nidx=null]
 + Euisculites [ACCEPTED GENUS 276829:BZ5ZK nidx=null]
Eulophoceras
 - Eulophoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSJRF nidx=null]
 + Eulophoceras [ACCEPTED GENUS 276829:BZ6J6 nidx=null]
Eumedlicottia
 - Eumedlicottia Spath, 1934 [ACCEPTED GENUS 272972:BSJRN nidx=null]
 + Eumedlicottia [ACCEPTED GENUS 276829:BZ6LT nidx=null]
Eumorphoceras
 - Eumorphoceras Girty, 1909 [ACCEPTED GENUS 272972:BSJRP nidx=null]
 + Eumorphoceras [ACCEPTED GENUS 276829:BZ6XL nidx=null]
Euomphaloceras
 - Euomphaloceras Spath, 1923 [ACCEPTED GENUS 272972:BSJS4 nidx=null]
 + Euomphaloceras [ACCEPTED GENUS 276829:BZ7N6 nidx=null]
Eupachydiscus
 - Eupachydiscus Spath, 1922 [ACCEPTED GENUS 272972:BSJS6 nidx=null]
 + Eupachydiscus [ACCEPTED GENUS 276829:BZ7RZ nidx=null]
Euphyllites
 - Euphyllites Wahner, 1898 [ACCEPTED GENUS 272972:BSJS9 nidx=null]
 + Euphyllites [ACCEPTED GENUS 276829:BZ8ZV nidx=null]
Eupleuroceras
 - Eupleuroceras Miller & Cline, 1934 [ACCEPTED GENUS 272972:BSJSB nidx=null]
 + Eupleuroceras [ACCEPTED GENUS 276829:BZ99Q nidx=null]
Eupleuroceratidae
 - Eupleuroceratidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSH2Q nidx=null]
 + Eupleuroceratidae [ACCEPTED FAMILY 276829:BX2B3 nidx=null]
Euptychoceras
 - Euptychoceras Breistroffer, 1952 [ACCEPTED GENUS 272972:BSJT7 nidx=null]
 + Euptychoceras [ACCEPTED GENUS 276829:BZ9ZH nidx=null]
Eurites
 - Eurites Kusina, 1973 [ACCEPTED GENUS 272972:BSJTC nidx=null]
 + Eurites [ACCEPTED GENUS 276829:BZB85 nidx=null]
Euroceras
 - Euroceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSJTD nidx=null]
 + Euroceras [ACCEPTED GENUS 276829:BZBCT nidx=null]
Eusagenites
 - Eusagenites Tozer, 1971 [ACCEPTED GENUS 272972:BSJTR nidx=null]
 + Eusagenites [ACCEPTED GENUS 276829:BZC5W nidx=null]
Euthymiceras
 - Euthymiceras Grigorieva, 1938 [ACCEPTED GENUS 272972:BSJTS nidx=null]
 + Euthymiceras [ACCEPTED GENUS 276829:BZCCP nidx=null]
Eutomoceras
 - Eutomoceras Hyatt, 1877 [ACCEPTED GENUS 272972:BSJTT nidx=null]
 + Eutomoceras [ACCEPTED GENUS 276829:BZCDK nidx=null]
Evenites
 - Evenites Dagis & Ermakova, 1988 [ACCEPTED GENUS 272972:BSJTW nidx=null]
 + Evenites [ACCEPTED GENUS 276829:BZCKK nidx=null]
Exiteloceras
 - Exiteloceras Hyatt, 1894 [ACCEPTED GENUS 272972:BSJTY nidx=null]
 + Exiteloceras [ACCEPTED GENUS 276829:BZCYP nidx=null]
Exomiloceras
 - Exomiloceras Wiedenmayer, 1979 [ACCEPTED GENUS 272972:BSJTZ nidx=null]
 + Exomiloceras [ACCEPTED GENUS 276829:BZD2P nidx=null]
Exopinacites
 - Exopinacites Chlupac & Turek, 1983 [ACCEPTED GENUS 272972:BSJV2 nidx=null]
 + Exopinacites [ACCEPTED GENUS 276829:BZD35 nidx=null]
Exotornoceras
 - Exotornoceras Becker, 1993 [ACCEPTED GENUS 272972:BSJV3 nidx=null]
 + Exotornoceras [ACCEPTED GENUS 276829:BZD3T nidx=null]
Extranodites
 - Extranodites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJV4 nidx=null]
 + Extranodites [ACCEPTED GENUS 276829:BZD4D nidx=null]
Extropharciceras
 - Extropharciceras Bockwinkel et al., 2009 [ACCEPTED GENUS 272972:BSJV5 nidx=null]
 + Extropharciceras [ACCEPTED GENUS 276829:BZD4F nidx=null]
Ezilloella
 - Ezilloella Reyment, 1954 [ACCEPTED GENUS 272972:BSJV6 nidx=null]
 + Ezilloella [ACCEPTED GENUS 276829:BZD54 nidx=null]
Fagara
 - Fagara L. [SYNONYM UNRANKED 272972:5T9SS nidx=null parent=6497N]
 + Fagara L. [SYNONYM UNRANKED 276829:BWBV6 nidx=null parent=6497N]
Fagesia
 - Fagesia Pervinquiére, 1907 [ACCEPTED GENUS 272972:BSJV7 nidx=null]
 + Fagesia [ACCEPTED GENUS 276829:BZD77 nidx=null]
 + Fagesia Delphy, 1938 [SYNONYM GENUS 276829:BZD78 nidx=null parent=87FSD]
Falcitornoceras
 - Falcitornoceras House & Price, 1985 [ACCEPTED GENUS 272972:BSJV8 nidx=null]
 + Falcitornoceras [ACCEPTED GENUS 276829:BZD7H nidx=null]
Fallacites
 - Fallacites Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSJV9 nidx=null]
 + Fallacites [ACCEPTED GENUS 276829:BZD7R nidx=null]
Falloticeras
 - Falloticeras Parona & Bonarelli, 1897 [ACCEPTED GENUS 272972:BSJVB nidx=null]
 + Falloticeras [ACCEPTED GENUS 276829:BZD84 nidx=null]
Fanninoceras
 - Fanninoceras McLearn, 1930 [ACCEPTED GENUS 272972:BSJVC nidx=null]
 + Fanninoceras [ACCEPTED GENUS 276829:BZDBG nidx=null]
 + Fanninoceras [ACCEPTED SUBGENUS 276829:BZDBH nidx=null]
Farnhamia
 - Farnhamia Casey, 1954 [ACCEPTED GENUS 272972:BSJVF nidx=null]
 + Farnhamia [ACCEPTED GENUS 276829:BZDBX nidx=null]
Fasciculoceras
 - Fasciculoceras Bogoslovsky, 1969 [ACCEPTED GENUS 272972:BSJVG nidx=null]
 + Fasciculoceras [ACCEPTED GENUS 276829:BZDD9 nidx=null]
Fascipericyclus
 - Fascipericyclus Turner, 1948 [ACCEPTED GENUS 272972:BSJVH nidx=null]
 + Fascipericyclus [ACCEPTED GENUS 276829:BZDDQ nidx=null]
Favrella
 - Favrella Douvillé, 1909 [ACCEPTED GENUS 272972:BSJVJ nidx=null]
 + Favrella [ACCEPTED GENUS 276829:BZDG9 nidx=null]
Favreticeras
 - Favreticeras Bucher, 1992 [ACCEPTED GENUS 272972:BSJVK nidx=null]
 + Favreticeras [ACCEPTED GENUS 276829:BZDGB nidx=null]
Fayettevillea
 - Fayettevillea Gordon, 1960 [ACCEPTED GENUS 272972:BSJVL nidx=null]
 + Fayettevillea [ACCEPTED GENUS 276829:BZDGR nidx=null]
Fehlmannites
 - Fehlmannites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJVM nidx=null]
 + Fehlmannites [ACCEPTED GENUS 276829:BZDJN nidx=null]
Felisporadoceras
 - Felisporadoceras Korn, 2002 [ACCEPTED GENUS 272972:BSJVN nidx=null]
 + Felisporadoceras [ACCEPTED GENUS 276829:BZDL8 nidx=null]
Fengchengoceras
 - Fengchengoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSJVP nidx=null]
 + Fengchengoceras [ACCEPTED GENUS 276829:BZDND nidx=null]
Fengshanites
 - Fengshanites Chao, 1950 [ACCEPTED GENUS 272972:BSJVQ nidx=null]
 + Fengshanites [ACCEPTED GENUS 276829:BZDNJ nidx=null]
Ferganoceras
 - Ferganoceras Librovitch, 1957 [ACCEPTED GENUS 272972:BSJVV nidx=null]
 + Ferganoceras [ACCEPTED GENUS 276829:BZDRY nidx=null]
Ferganoceratidae
 - Ferganoceratidae Ruzhencev, 1960 [ACCEPTED FAMILY 272972:BSH2R nidx=null]
 + Ferganoceratidae [ACCEPTED FAMILY 276829:BX2DM nidx=null]
Fergusonites
 - Fergusonites Guex, 1980 [ACCEPTED GENUS 272972:BSJVW nidx=null]
 + Fergusonites [ACCEPTED GENUS 276829:BZDSB nidx=null]
Feruglioceras
 - Feruglioceras Leanza, 1968 [ACCEPTED GENUS 272972:BSJVY nidx=null]
 + Feruglioceras [ACCEPTED GENUS 276829:BZDW9 nidx=null]
Ficheuria
 - Ficheuria Pervinquiére, 1910 [ACCEPTED GENUS 272972:BSJVZ nidx=null]
 + Ficheuria [ACCEPTED GENUS 276829:BZDXR nidx=null]
Fidelites
 - Fidelites (Chlupac & Turek, 1983) [ACCEPTED GENUS 272972:BSJW2 nidx=null]
 + Fidelites [ACCEPTED GENUS 276829:BZDY8 nidx=null]
Fieldingia
 - Fieldingia Cantaluppi, 1970 [SYNONYM GENUS 272972:BSJW4 nidx=null parent=BT49Q]
 + Fieldingia Kent, 1870 [ACCEPTED GENUS 276829:BZDYZ nidx=null]
Flemingites
 - Flemingites Waagen, 1892 [ACCEPTED GENUS 272972:BSJW6 nidx=null]
 + Flemingites [ACCEPTED GENUS 276829:BZFLL nidx=null]
Flemingites muthensis
 - Flemingites muthensis Krafft, 1909 [ACCEPTED SPECIES 272972:BSSN9 nidx=null]
 + Flemingites muthensis Krafft, 1900 [ACCEPTED SPECIES 276829:CJVMH nidx=null]
Flemingitidae
 - Flemingitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH2S nidx=null]
 + Flemingitidae [ACCEPTED FAMILY 276829:BX2GD nidx=null]
Flexoptychites
 - Flexoptychites Spath, 1951 [ACCEPTED GENUS 272972:BSJW7 nidx=null]
 + Flexoptychites [ACCEPTED GENUS 276829:BZFMG nidx=null]
Flickiidae
 - Flickiidae Adkins, 1928 [ACCEPTED FAMILY 272972:BSH2T nidx=null]
 + Flickiidae [ACCEPTED FAMILY 276829:BX2GF nidx=null]
Foetterleiceras
 - Foetterleiceras Rakús & Guex, 2002 [ACCEPTED GENUS 272972:BSJW8 nidx=null]
 + Foetterleiceras [ACCEPTED GENUS 276829:BZFSP nidx=null]
Follotites
 - Follotites Korn et al., 2010 [ACCEPTED GENUS 272972:BSJW9 nidx=null]
 + Follotites [ACCEPTED GENUS 276829:BZFTB nidx=null]
Fontanelliceras
 - Fontanelliceras Fucini, 1931 [ACCEPTED GENUS 272972:BSJWB nidx=null]
 + Fontanelliceras [ACCEPTED GENUS 276829:BZFV2 nidx=null]
Foordites
 - Foordites Wedekind, 1918 [ACCEPTED GENUS 272972:BSJWC nidx=null]
 + Foordites [ACCEPTED GENUS 276829:BZFVX nidx=null]
Forbesiceras
 - Forbesiceras Kossmat, 1897 [ACCEPTED GENUS 272972:BSJWG nidx=null]
 + Forbesiceras [ACCEPTED GENUS 276829:BZFWS nidx=null]
Forbesiceratidae
 - Forbesiceratidae (Wright, 1952) [ACCEPTED FAMILY 272972:BSH2V nidx=null]
 + Forbesiceratidae [ACCEPTED FAMILY 276829:BX2GL nidx=null]
Forresteria
 - Forresteria (Reeside, 1932) [SYNONYM GENUS 272972:BSN25 nidx=null parent=BSN26]
 + Forresteria [ACCEPTED SUBGENUS 276829:C5YCL nidx=null]
Frankia
 - Frankia Steud. ex Steud. [SYNONYM UNRANKED 272972:5T9XB nidx=null parent=4RQV]
 + Frankia Brunchorst, 1886 [ACCEPTED GENUS 276829:BWCVG nidx=null]
 + Frankia McCulloch, 1977 [SYNONYM GENUS 276829:BWCVH nidx=null parent=BWCVC]
 + Frankia Steud. ex Steud. [SYNONYM UNRANKED 276829:BWCVJ nidx=null parent=4RQV]
Frankites
 - Frankites Tozer, 1971 [ACCEPTED GENUS 272972:BSJWQ nidx=null]
 + Frankites [ACCEPTED GENUS 276829:BZG53 nidx=null]
Franziceras
 - Franziceras Buckman, 1923 [ACCEPTED GENUS 272972:BSJWR nidx=null]
 + Franziceras [ACCEPTED GENUS 276829:BZG5C nidx=null]
Fraus bilineata
 - Fraus bilineata (Walker, 1856) [ACCEPTED SPECIES 272972:9425D nidx=null]
 + Fraus bilineata Walker, 1865 [ACCEPTED SPECIES 276829:BZ59X nidx=null]
Freboldiceras
 - Freboldiceras Imlay, 1959 [ACCEPTED GENUS 272972:BSJWS nidx=null]
 + Freboldiceras [ACCEPTED GENUS 276829:BZG5M nidx=null]
Frechites
 - Frechites Smith, 1932 [ACCEPTED GENUS 272972:BSJWT nidx=null]
 + Frechites [ACCEPTED GENUS 276829:BZG5Q nidx=null]
Frechitoides
 - Frechitoides Konstantinov, 1987 [ACCEPTED GENUS 272972:BSJWV nidx=null]
 + Frechitoides [ACCEPTED GENUS 276829:BZG5R nidx=null]
Fresvillia
 - Fresvillia Kennedy, 1986 [ACCEPTED GENUS 272972:BSJWX nidx=null]
 + Fresvillia [ACCEPTED GENUS 276829:BZG6K nidx=null]
Frickites
 - Frickites Jeannet, 1951 [ACCEPTED GENUS 272972:BSJWY nidx=null]
 + Frickites [ACCEPTED GENUS 276829:BZG6W nidx=null]
Fuciniceras
 - Fuciniceras Haas, 1913 [ACCEPTED GENUS 272972:BSJWZ nidx=null]
 + Fuciniceras [ACCEPTED GENUS 276829:BZG94 nidx=null]
Furloceras
 - Furloceras Elmi & Rulleau, 1995 [ACCEPTED GENUS 272972:BSFYW nidx=null]
 + Furloceras [ACCEPTED GENUS 276829:BVBVH nidx=null]
Gabbioceras batesi
 - Gabbioceras batesi (Trask, 1855) [SYNONYM SPECIES 272972:BSSPD nidx=null parent=BSP8R]
 + Gabbioceras batesi (Gabb, 1869) [SYNONYM SPECIES 276829:CK3JC nidx=null parent=C7TVZ]
Gabboceras
 - Gabboceras Taylor & Guex, 2002 [ACCEPTED GENUS 272972:BSJX3 nidx=null]
 + Gabboceras [ACCEPTED GENUS 276829:BZGJ7 nidx=null]
Gaetanoceras
 - Gaetanoceras Ruzhencev, 1938 [ACCEPTED GENUS 272972:BSJX4 nidx=null]
 + Gaetanoceras [ACCEPTED GENUS 276829:BZGLG nidx=null]
Galfettites
 - Galfettites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSJXB nidx=null]
 + Galfettites [ACCEPTED GENUS 276829:BZGS7 nidx=null]
Gallitellia
 - Gallitellia Venturi & Ferri, 2001 [SYNONYM GENUS 272972:BSVXP nidx=null parent=4TV3]
 + Gallitellia Loeblich & Tappan, 1986 [SYNONYM GENUS 276829:CSXBL nidx=null parent=BWNTP]
 + Gallitellia Cuif, 1977 [SYNONYM GENUS 276829:CSXBM nidx=null parent=C5S3Y]
Gandakites
 - Gandakites Krystyn, 1982 [ACCEPTED GENUS 272972:BSJXC nidx=null]
 + Gandakites [ACCEPTED GENUS 276829:BZH68 nidx=null]
Garantiana
 - Garantiana Maschke, 1907 [ACCEPTED GENUS 272972:BSJXD nidx=null]
 + Garantiana [ACCEPTED GENUS 276829:BZHBY nidx=null]
Gargasiceras
 - Gargasiceras Casey, 1954 [ACCEPTED GENUS 272972:BSJXG nidx=null]
 + Gargasiceras [ACCEPTED GENUS 276829:BZHDD nidx=null]
Gastrioceras
 - Gastrioceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSJXH nidx=null]
 + Gastrioceras [ACCEPTED GENUS 276829:BZHK8 nidx=null]
Gastriocerataceae
 - Gastriocerataceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGVC nidx=null]
 + Gastriocerataceae [ACCEPTED SUPERFAMILY 276829:BWXK3 nidx=null]
Gastrioceratidae
 - Gastrioceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSH2Z nidx=null]
 + Gastrioceratidae [ACCEPTED FAMILY 276829:BX2JV nidx=null]
Gattendorfia
 - Gattendorfia Schindewolf, 1920 [ACCEPTED GENUS 272972:BSJXK nidx=null]
 + Gattendorfia [ACCEPTED GENUS 276829:BZHNL nidx=null]
 + Gattendorfia [ACCEPTED SUBGENUS 276829:BZHNM nidx=null]
Gattendorfiidae
 - Gattendorfiidae Bartzsch & Weyer, 1987 [ACCEPTED FAMILY 272972:BSH32 nidx=null]
 + Gattendorfiidae [ACCEPTED FAMILY 276829:BX2K4 nidx=null]
Gaudemerites
 - Gaudemerites Guex et al., 2005 [ACCEPTED GENUS 272972:BSJXM nidx=null]
 + Gaudemerites [ACCEPTED GENUS 276829:BZHP2 nidx=null]
Gaudryceras
 - Gaudryceras (de Grossouvre, 1894) [ACCEPTED GENUS 272972:BSJXN nidx=null]
 + Gaudryceras [ACCEPTED GENUS 276829:BZHP6 nidx=null]
 + Gaudryceras [ACCEPTED SUBGENUS 276829:BZHP7 nidx=null]
Gaudryceratidae
 - Gaudryceratidae (Spath, 1927) [ACCEPTED FAMILY 272972:BSH33 nidx=null]
 - Gaudryceratidae Spath, 1927 [ACCEPTED FAMILY 272972:BSH34 nidx=null]
 + Gaudryceratidae [ACCEPTED FAMILY 276829:BX2K6 nidx=null]
Gaurites
 - Gaurites Bogoslovsky, 1984 [ACCEPTED GENUS 272972:BSJXS nidx=null]
 + Gaurites [ACCEPTED GENUS 276829:BZHQN nidx=null]
Gauthiericeras
 - Gauthiericeras de Grossouvre, 1894 [ACCEPTED GENUS 272972:BSFYX nidx=null]
 + Gauthiericeras [ACCEPTED GENUS 276829:BVBVR nidx=null]
Gazoryctes
 - Gazoryctes Hübner, 1820 [SYNONYM GENUS 272972:BSF9B nidx=null parent=93NP7]
 + Gazoryctes Kirby, 1892 [SYNONYM GENUS 276829:95K93 nidx=null parent=93NP7]
Geermuceras
 - Geermuceras Liang, 1983 [ACCEPTED GENUS 272972:BSJXV nidx=null]
 + Geermuceras [ACCEPTED GENUS 276829:BZHXF nidx=null]
Gemmellaroceras
 - Gemmellaroceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJXW nidx=null]
 + Gemmellaroceras [ACCEPTED GENUS 276829:BZJ8M nidx=null]
Genuclymenia
 - Genuclymenia Wedekind, 1908 [ACCEPTED GENUS 272972:BSJXX nidx=null]
 + Genuclymenia [ACCEPTED GENUS 276829:BZJBV nidx=null]
Gephurocerataceae
 - Gephurocerataceae Frech, 1897 [ACCEPTED SUPERFAMILY 272972:BSGVD nidx=null]
 + Gephurocerataceae [ACCEPTED SUPERFAMILY 276829:BWXK6 nidx=null]
Gephuroceratidae
 - Gephuroceratidae Frech, 1897 [ACCEPTED FAMILY 272972:BSH37 nidx=null]
 + Gephuroceratidae [ACCEPTED FAMILY 276829:BX2L7 nidx=null]
Geyeria
 - Geyeria Buckman, 1899 [SYNONYM GENUS 272972:BSNTS nidx=null parent=BT3YG]
 + Geyeria A. J. Wagner, 1914 [SYNONYM GENUS 276829:C7C9S nidx=null parent=C3ZPC]
Ginsburgites
 - Ginsburgites Bucher, 1992 [ACCEPTED GENUS 272972:BSJY6 nidx=null]
 + Ginsburgites [ACCEPTED GENUS 276829:BZK6Z nidx=null]
Giovaraites
 - Giovaraites Frau et al., 2016 [ACCEPTED GENUS 272972:BSJY7 nidx=null]
 + Giovaraites [ACCEPTED GENUS 276829:BZK72 nidx=null]
Girtyoceras
 - Girtyoceras Wedekind, 1918 [ACCEPTED GENUS 272972:BSJY8 nidx=null]
 + Girtyoceras [ACCEPTED GENUS 276829:BZKBJ nidx=null]
Girtyocerataceae
 - Girtyocerataceae Wedekind, 1918 [ACCEPTED SUPERFAMILY 272972:BSGVF nidx=null]
 + Girtyocerataceae [ACCEPTED SUPERFAMILY 276829:BWXK7 nidx=null]
Girtyoceratidae
 - Girtyoceratidae Wedekind, 1918 [ACCEPTED FAMILY 272972:BSH38 nidx=null]
 + Girtyoceratidae [ACCEPTED FAMILY 276829:BX2M5 nidx=null]
Glabercolumbites
 - Glabercolumbites Guex et al., 2005 [ACCEPTED GENUS 272972:BSJY9 nidx=null]
 + Glabercolumbites [ACCEPTED GENUS 276829:BZKCQ nidx=null]
Glacies tenuifasciata
 - Glacies tenuifasciata Wehrli, 1920 [AMBIGUOUS_SYNONYM SPECIES 272972:BSXKJ nidx=null parent=942G7]
 + Glacies tenuifasciata Wehrli, 1921 [AMBIGUOUS_SYNONYM SPECIES 276829:CZSHR nidx=null parent=942FZ]
 + Glacies tenuifasciata Wehrli, 1920 [AMBIGUOUS_SYNONYM SPECIES 276829:CZSHS nidx=null parent=942G7]
Glaphyrites
 - Glaphyrites (Ruzhencev, 1936) [ACCEPTED GENUS 272972:BSJYB nidx=null]
 + Glaphyrites [ACCEPTED GENUS 276829:BZKMF nidx=null]
Glaphyritidae
 - Glaphyritidae Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED FAMILY 272972:BSH3C nidx=null]
 + Glaphyritidae [ACCEPTED FAMILY 276829:BX2MG nidx=null]
Glassoceras
 - Glassoceras Ruzhencev, 1960 [ACCEPTED GENUS 272972:BSJYF nidx=null]
 + Glassoceras [ACCEPTED GENUS 276829:BZKP9 nidx=null]
Glatziella
 - Glatziella Renz, 1914 [ACCEPTED GENUS 272972:BSJYG nidx=null]
 + Glatziella [ACCEPTED GENUS 276829:BZKPL nidx=null]
Glatziellidae
 - Glatziellidae Schindewolf, 1928 [ACCEPTED FAMILY 272972:BSH3D nidx=null]
 + Glatziellidae [ACCEPTED FAMILY 276829:BX2MH nidx=null]
Gleboceras
 - Gleboceras Ruzhentsev, 1950 [ACCEPTED GENUS 272972:BSJYH nidx=null]
 + Gleboceras [ACCEPTED GENUS 276829:BZKS2 nidx=null]
Glebosoceras
 - Glebosoceras Reyment, 1954 [ACCEPTED GENUS 272972:BSJYJ nidx=null]
 + Glebosoceras [ACCEPTED GENUS 276829:BZKS3 nidx=null]
Gleviceras
 - Gleviceras Buckman, 1918 [ACCEPTED GENUS 272972:BSJYK nidx=null]
 + Gleviceras [ACCEPTED GENUS 276829:BZKSF nidx=null]
Gleviceras lotharingius
 - Gleviceras lotharingius (Reynes, 1850) [SYNONYM SPECIES 272972:BSSTG nidx=null parent=BSP9B]
 + Gleviceras lotharingius (Reynes, 1879) [ACCEPTED SPECIES 276829:CKFW2 nidx=null]
Globacrochordiceras
 - Globacrochordiceras Monnet et al., 2013 [ACCEPTED GENUS 272972:BSJYL nidx=null]
 + Globacrochordiceras [ACCEPTED GENUS 276829:BZKTQ nidx=null]
Glochiceras
 - Glochiceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJYM nidx=null]
 + Glochiceras [ACCEPTED GENUS 276829:BZKZJ nidx=null]
 + Glochiceras [ACCEPTED SUBGENUS 276829:BZKZK nidx=null]
Glottoceras
 - Glottoceras Hyatt, 1875 [ACCEPTED GENUS 272972:BSJYP nidx=null]
 + Glottoceras [ACCEPTED GENUS 276829:BZL4Q nidx=null]
Glyphiolobus
 - Glyphiolobus (Gordon, 1964) [ACCEPTED GENUS 272972:BSJYS nidx=null]
 + Glyphiolobus [ACCEPTED GENUS 276829:BZL5Q nidx=null]
Glyptophiceras
 - Glyptophiceras Spath, 1930 [ACCEPTED GENUS 272972:BSJYV nidx=null]
 + Glyptophiceras [ACCEPTED GENUS 276829:BZL7F nidx=null]
Glyptoxoceras
 - Glyptoxoceras Spath, 1925 [ACCEPTED GENUS 272972:BSJYW nidx=null]
 + Glyptoxoceras [ACCEPTED GENUS 276829:BZL82 nidx=null]
Gnomohalorites
 - Gnomohalorites Tozer, 1979 [ACCEPTED GENUS 272972:BSJYX nidx=null]
 + Gnomohalorites [ACCEPTED GENUS 276829:BZLD6 nidx=null]
Gobioceras
 - Gobioceras Bogoslovskaya, 1988 [ACCEPTED GENUS 272972:BSJYY nidx=null]
 + Gobioceras [ACCEPTED GENUS 276829:BZLFN nidx=null]
Gogoceras
 - Gogoceras Becker et al., 1993 [ACCEPTED GENUS 272972:BSJYZ nidx=null]
 + Gogoceras [ACCEPTED GENUS 276829:BZLJW nidx=null]
Gongrocnemis (Gongrocnemis) bivittata
 - Gongrocnemis (Gongrocnemis) bivittata Brunner von Wattenwyl, 1895 [ACCEPTED SPECIES 272972:6KQQY nidx=null]
 + Gongrocnemis (Gongrocnemis) bivittata Brunner von Wattenwyl, 1895 [ACCEPTED SPECIES 276829:CK83F nidx=null]
Goniatitaceae
 - Goniatitaceae Haan, 1825 [ACCEPTED SUPERFAMILY 272972:BSFXG nidx=null]
 + Goniatitaceae [ACCEPTED SUPERFAMILY 276829:BV9LH nidx=null]
Goniatites
 - Goniatites Haan, 1825 [ACCEPTED GENUS 272972:BSFYZ nidx=null]
 + Goniatites [ACCEPTED GENUS 276829:BVBWD nidx=null]
Goniatitidae
 - Goniatitidae Haan, 1825 [ACCEPTED FAMILY 272972:BSFXW nidx=null]
 + Goniatitidae [ACCEPTED FAMILY 276829:BV9SF nidx=null]
Gonioclymeniaceae
 - Gonioclymeniaceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGVG nidx=null]
 + Gonioclymeniaceae [ACCEPTED SUPERFAMILY 276829:BWXKR nidx=null]
Goniocyclus
 - Goniocyclus (Gordon, 1986) [ACCEPTED GENUS 272972:BSJZC nidx=null]
 + Goniocyclus [ACCEPTED GENUS 276829:BZLQ3 nidx=null]
 + Goniocyclus [ACCEPTED SUBGENUS 276829:BZLQ4 nidx=null]
Goniodiscus
 - Goniodiscus Waagen, 1895 [SYNONYM GENUS 272972:BSJZF nidx=null parent=BSK69]
 + Goniodiscus Müller & Troschel, 1842 [SYNONYM GENUS 276829:BZLQB nidx=null parent=BW3RQ]
 + Goniodiscus [sic] [SYNONYM GENUS 276829:BZLQC nidx=null parent=BW5YC]
Gonioglyphioceras
 - Gonioglyphioceras Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSJZG nidx=null]
 + Gonioglyphioceras [ACCEPTED GENUS 276829:BZLQQ nidx=null]
Goniojuvavites
 - Goniojuvavites (Krystyn, 1982) [SYNONYM GENUS 272972:BSN2C nidx=null parent=BSN2D]
 + Goniojuvavites [ACCEPTED SUBGENUS 276829:C5YGR nidx=null]
Gonioloboceras
 - Gonioloboceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSJZH nidx=null]
 + Gonioloboceras [ACCEPTED GENUS 276829:BZLQV nidx=null]
Goniolobocerataceae
 - Goniolobocerataceae Spath, 1934 [ACCEPTED SUPERFAMILY 272972:BSGVH nidx=null]
 + Goniolobocerataceae [ACCEPTED SUPERFAMILY 276829:BWXKS nidx=null]
Gonioloboceratidae
 - Gonioloboceratidae Spath, 1934 [ACCEPTED FAMILY 272972:BSH3F nidx=null]
 + Gonioloboceratidae [ACCEPTED FAMILY 276829:BX2PN nidx=null]
Gonioloboceratoides
 - Gonioloboceratoides Nassichuk, 1975 [ACCEPTED GENUS 272972:BSJZJ nidx=null]
 + Gonioloboceratoides [ACCEPTED GENUS 276829:BZLQW nidx=null]
Gonionotites
 - Gonionotites (Gemmellaro, 1904) [ACCEPTED GENUS 272972:BSJZK nidx=null]
 + Gonionotites [ACCEPTED GENUS 276829:BZLR5 nidx=null]
Goodhallites
 - Goodhallites (Spath, 1932) [ACCEPTED GENUS 272972:BSJZP nidx=null]
 + Goodhallites [ACCEPTED GENUS 276829:BZLX3 nidx=null]
Goodhallites hanhaense
 - Goodhallites hanhaense (Haas, 1942) [SYNONYM SPECIES 272972:BSSXY nidx=null parent=BSXM3]
 + Goodhallites hanhaense (Hass, 1942) [ACCEPTED SPECIES 276829:CKR63 nidx=null]
Gorcopis
 - Gorcopis Hübner, 1820 [SYNONYM GENUS 272972:9B96S nidx=null parent=929VH]
 + Gorcopis Walker, 1856 [SYNONYM GENUS 276829:95KBY nidx=null parent=929VH]
Gordonites
 - Gordonites Miller & Furnish, 1958 [ACCEPTED GENUS 272972:BSJZS nidx=null]
 + Gordonites [ACCEPTED GENUS 276829:BZLXV nidx=null]
Gorgopis libania
 - Gorgopis libania (Stoll, 1781) [ACCEPTED SPECIES 272972:3H39F nidx=null]
 + Gorgopis libania (Cramer, 1781) [ACCEPTED SPECIES 276829:CK8YS nidx=null]
Goricanites
 - Goricanites Guex et al., 2005 [ACCEPTED GENUS 272972:BSJZT nidx=null]
 + Goricanites [ACCEPTED GENUS 276829:BZLZ4 nidx=null]
Gorina
 - Gorina Viette, 1961 [SYNONYM GENUS 272972:BSF3T nidx=null parent=92QFS]
 + Gorina Quail, 1899 [SYNONYM GENUS 276829:95KC2 nidx=null parent=92QFS]
 + Gorina Quail, 1899 [SYNONYM GENUS 276829:CSYDB nidx=null parent=92HK7]
Goryna
 - Goryna Viette, 1961 [SYNONYM GENUS 272972:BS9GG nidx=null parent=92QFS]
 + Goryna Lucas, 1901 [SYNONYM GENUS 276829:CSYDL nidx=null parent=92QFS]
Goudemandites
 - Goudemandites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSK24 nidx=null]
 + Goudemandites [ACCEPTED GENUS 276829:BZM2X nidx=null]
Gowericeras
 - Gowericeras (Buckman, 1921) [ACCEPTED GENUS 272972:BSK26 nidx=null]
 + Gowericeras [ACCEPTED GENUS 276829:BZM3K nidx=null]
Gracilites
 - Gracilites Bogoslovsky, 1972 [ACCEPTED GENUS 272972:BSK28 nidx=null]
 + Gracilites [ACCEPTED GENUS 276829:BZM52 nidx=null]
Graefenbergites
 - Graefenbergites Schairer & Schlampp, 2003 [ACCEPTED GENUS 272972:BSK29 nidx=null]
 + Graefenbergites [ACCEPTED GENUS 276829:BZM5Z nidx=null]
Grambergia
 - Grambergia Popov, 1961 [ACCEPTED GENUS 272972:BSK2B nidx=null]
 + Grambergia [ACCEPTED GENUS 276829:BZM7J nidx=null]
Grantziceras
 - Grantziceras (Imlay, 1960) [SYNONYM GENUS 272972:BSN2F nidx=null parent=BSN2G]
 + Grantziceras [ACCEPTED SUBGENUS 276829:C5YGY nidx=null]
Graphoceratidae
 - Graphoceratidae Buckman, 1905 [ACCEPTED FAMILY 272972:BSH3G nidx=null]
 + Graphoceratidae [ACCEPTED FAMILY 276829:BX2QD nidx=null]
Graysonites
 - Graysonites Young, 1958 [ACCEPTED GENUS 272972:BSK2H nidx=null]
 + Graysonites [ACCEPTED GENUS 276829:BZMP5 nidx=null]
Greenidea (Greenidea) sutepensis
 - Greenidea (Greenidea) sutepensis [ACCEPTED SPECIES 272972:BSSYJ nidx=null]
 + Greenidea (Greenidea) sutepensis [ACCEPTED SPECIES 276829:CKT8X nidx=null]
Greenidea (Trichosiphum) okajimai
 - Greenidea (Trichosiphum) okajimai [ACCEPTED SPECIES 272972:BFYNS nidx=null]
 + Greenidea (Trichosiphum) okajimai [ACCEPTED SPECIES 276829:CKT8M nidx=null]
Grevillea aspleniifolia
 - Grevillea aspleniifolia Knight & Salisb. [ACCEPTED SPECIES 272972:3HCK4 nidx=null]
 + Grevillea aspleniifolia Knight & Salisb. [ACCEPTED SPECIES 276829:C2284 nidx=null]
Griesbachites
 - Griesbachites (von Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSK2K nidx=null]
 + Griesbachites [ACCEPTED GENUS 276829:BZMT8 nidx=null]
Groenlandites
 - Groenlandites Kummel, 1953 [ACCEPTED GENUS 272972:BSK2Q nidx=null]
 + Groenlandites [ACCEPTED GENUS 276829:BZMY5 nidx=null]
Grossouvrites
 - Grossouvrites (Kilian & Reboul, 1909) [SYNONYM GENUS 272972:BSN2H nidx=null parent=BSN2J]
 + Grossouvrites [ACCEPTED SUBGENUS 276829:C5YH7 nidx=null]
Grycia
 - Grycia (Imlay, 1961) [SYNONYM GENUS 272972:BSN2K nidx=null parent=BSN2L]
 + Grycia [ACCEPTED SUBGENUS 276829:C5YHB nidx=null]
Gryllacris (Pardogryllacris) lineolata
 - Gryllacris (Pardogryllacris) lineolata Serville, 1838 [ACCEPTED SPECIES 272972:8PZ6H nidx=null]
 + Gryllacris (Pardogryllacris) lineolata Serville, 1838 [ACCEPTED SPECIES 276829:CKC3K nidx=null]
Gryllomorpha (Gryllomorphella) uclensis
 - Gryllomorpha (Gryllomorphella) uclensis Pantel, 1890 [ACCEPTED SPECIES 272972:3HG8C nidx=null]
 + Gryllomorpha (Gryllomorphella) uclensis Pantel, 1890 [ACCEPTED SPECIES 276829:CKC59 nidx=null]
Gryllus (Gryllus) assimilis
 - Gryllus (Gryllus) assimilis (Fabricius, 1775) [ACCEPTED SPECIES 272972:3HGKX nidx=null]
 + Gryllus (Gryllus) assimilis (Fabricius, 1775) [ACCEPTED SPECIES 276829:CKC99 nidx=null]
Guangxiceltites
 - Guangxiceltites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSK2Z nidx=null]
 + Guangxiceltites [ACCEPTED GENUS 276829:BZN7C nidx=null]
Guangxiceras
 - Guangxiceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSK32 nidx=null]
 + Guangxiceras [ACCEPTED GENUS 276829:BZN7D nidx=null]
Guembelites
 - Guembelites (Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSK34 nidx=null]
 + Guembelites [ACCEPTED GENUS 276829:BZN8W nidx=null]
 + Guembelites Bensh, 1987 [SYNONYM GENUS 276829:BZN8X nidx=null parent=C45CT]
Guexiceras
 - Guexiceras Taylor, 1998 [ACCEPTED GENUS 272972:BSK37 nidx=null]
 + Guexiceras [ACCEPTED GENUS 276829:BZN9G nidx=null]
Guexites
 - Guexites Bucher, 1992 [ACCEPTED GENUS 272972:BSK39 nidx=null]
 + Guexites [ACCEPTED GENUS 276829:BZN9H nidx=null]
Guiyangoceras
 - Guiyangoceras Zhou, 1985 [ACCEPTED GENUS 272972:BSK3B nidx=null]
 + Guiyangoceras [ACCEPTED GENUS 276829:BZNCW nidx=null]
Gulielmiceras
 - Gulielmiceras (Buckman, 1920) [ACCEPTED GENUS 272972:BSK3C nidx=null]
 + Gulielmiceras [ACCEPTED GENUS 276829:BZNDF nidx=null]
Gundolficeras
 - Gundolficeras Becker, 1995 [ACCEPTED GENUS 272972:BSK3G nidx=null]
 + Gundolficeras [ACCEPTED GENUS 276829:BZNF7 nidx=null]
Gunnarites
 - Gunnarites (Kilian & Reboul, 1909) [ACCEPTED GENUS 272972:BSK3H nidx=null]
 + Gunnarites [ACCEPTED GENUS 276829:BZNFB nidx=null]
Guodunites
 - Guodunites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSK3L nidx=null]
 + Guodunites [ACCEPTED GENUS 276829:BZNFK nidx=null]
Gurleyites
 - Gurleyites Mathews, 1929 [ACCEPTED GENUS 272972:BSK3M nidx=null]
 + Gurleyites [ACCEPTED GENUS 276829:BZNFW nidx=null]
Gymnites
 - Gymnites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSK3Q nidx=null]
 + Gymnites [ACCEPTED GENUS 276829:BZNJ3 nidx=null]
Gymnitidae
 - Gymnitidae Waagen, 1895 [ACCEPTED FAMILY 272972:BSH3M nidx=null]
 + Gymnitidae [ACCEPTED FAMILY 276829:BX2R2 nidx=null]
Gymnotoceras
 - Gymnotoceras (Hyatt, 1877) [ACCEPTED GENUS 272972:BSK3S nidx=null]
 + Gymnotoceras [ACCEPTED GENUS 276829:BZNQY nidx=null]
Gymnotropites
 - Gymnotropites (Hyatt & Smith, 1905) [ACCEPTED GENUS 272972:BSK3V nidx=null]
 + Gymnotropites [ACCEPTED GENUS 276829:BZNR6 nidx=null]
Gyroceratites
 - Gyroceratites Meyer, 1831 [ACCEPTED GENUS 272972:BSK3Y nidx=null]
 + Gyroceratites [ACCEPTED GENUS 276829:BZNTG nidx=null]
Gyronites
 - Gyronites (Waagen, 1895) [ACCEPTED GENUS 272972:BSK3Z nidx=null]
 + Gyronites [ACCEPTED GENUS 276829:BZNW9 nidx=null]
Gyronitidae
 - Gyronitidae (Waagen, 1895) [ACCEPTED FAMILY 272972:BSFXY nidx=null]
 + Gyronitidae [ACCEPTED FAMILY 276829:BV9SJ nidx=null]
Gyrophiceras
 - Gyrophiceras Spath, 1934 [ACCEPTED GENUS 272972:BSK43 nidx=null]
 + Gyrophiceras [ACCEPTED GENUS 276829:BZNWS nidx=null]
Gyrophioceras
 - Gyrophioceras (Spath, 1924) [SYNONYM GENUS 272972:BSN2M nidx=null parent=BSN2P]
 + Gyrophioceras [ACCEPTED SUBGENUS 276829:C5YHY nidx=null]
Habadraites
 - Habadraites Korn et al., 2010 [ACCEPTED GENUS 272972:BSK44 nidx=null]
 + Habadraites [ACCEPTED GENUS 276829:BZP37 nidx=null]
Hadrothisbites
 - Hadrothisbites Tozer, 1994 [ACCEPTED GENUS 272972:BSK48 nidx=null]
 + Hadrothisbites [ACCEPTED GENUS 276829:BZP97 nidx=null]
Halorites
 - Halorites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSK4D nidx=null]
 + Halorites [ACCEPTED GENUS 276829:BZQFG nidx=null]
Haloritidae
 - Haloritidae Mojsisovics, 1893 [ACCEPTED FAMILY 272972:BSH3N nidx=null]
 + Haloritidae [ACCEPTED FAMILY 276829:BX2SQ nidx=null]
Hamites
 - Hamites (Parkinson, 1811) [ACCEPTED GENUS 272972:BSK4F nidx=null]
 + Hamites [ACCEPTED GENUS 276829:BZQJJ nidx=null]
 + Hamites [ACCEPTED SUBGENUS 276829:BZQJK nidx=null]
Hamiticeras
 - Hamiticeras Anderson, 1938 [ACCEPTED GENUS 272972:BSK4M nidx=null]
 + Hamiticeras [ACCEPTED GENUS 276829:BZQJL nidx=null]
Hamitidae
 - Hamitidae Gill, 1871 [ACCEPTED FAMILY 272972:BSH3P nidx=null]
 + Hamitidae [ACCEPTED FAMILY 276829:BX2SY nidx=null]
Hammatoceratidae
 - Hammatoceratidae Buckman, 1887 [ACCEPTED FAMILY 272972:BSFXZ nidx=null]
 + Hammatoceratidae [ACCEPTED FAMILY 276829:BV9SP nidx=null]
Hammatocyclus
 - Hammatocyclus (Schindewolf, 1951) [ACCEPTED GENUS 272972:BSK4Q nidx=null]
 + Hammatocyclus [ACCEPTED GENUS 276829:BZQJY nidx=null]
Hamulinidae
 - Hamulinidae Gill, 1871 [ACCEPTED FAMILY 272972:BSH3Q nidx=null]
 + Hamulinidae [ACCEPTED FAMILY 276829:BX2T2 nidx=null]
Hamulinites
 - Hamulinites Paquier, 1900 [ACCEPTED GENUS 272972:BSK4W nidx=null]
 + Hamulinites [ACCEPTED GENUS 276829:BZQKR nidx=null]
Hanielites
 - Hanielites Welter, 1922 [ACCEPTED GENUS 272972:BSK4X nidx=null]
 + Hanielites [ACCEPTED GENUS 276829:BZQLT nidx=null]
Hannaites
 - Hannaites Imlay, 1957 [ACCEPTED GENUS 272972:BSGHN nidx=null]
 + Hannaites [ACCEPTED GENUS 276829:BWGCF nidx=null]
Hannaoceras
 - Hannaoceras Tomlin, 1931 [ACCEPTED GENUS 272972:BSK4Y nidx=null]
 + Hannaoceras [ACCEPTED GENUS 276829:BZQMD nidx=null]
Haoceras
 - Haoceras Balini & Zou, 2015 [ACCEPTED GENUS 272972:BSK52 nidx=null]
 + Haoceras [ACCEPTED GENUS 276829:BZQNN nidx=null]
Haploceras
 - Haploceras Zittel, 1870 [ACCEPTED GENUS 272972:BSK53 nidx=null]
 + Haploceras [ACCEPTED GENUS 276829:BZQR2 nidx=null]
Haplocerataceae
 - Haplocerataceae Zittel, 1884 [ACCEPTED SUPERFAMILY 272972:BSGVJ nidx=null]
 + Haplocerataceae [ACCEPTED SUPERFAMILY 276829:BWXLD nidx=null]
Haploceratidae
 - Haploceratidae Zittel, 1884 [ACCEPTED FAMILY 272972:BSH3R nidx=null]
 + Haploceratidae [ACCEPTED FAMILY 276829:BX2TB nidx=null]
Haplothrips (Haplothrips) vuilleti
 - Haplothrips (Haplothrips) vuilleti Priesner, 1920 [ACCEPTED SPECIES 272972:BST5H nidx=null]
 + Haplothrips (Haplothrips) vuilleti Priesner, 1920 [ACCEPTED SPECIES 276829:CLB9V nidx=null]
Hastites
 - Hastites Meyer-Eymar, 1883 [ACCEPTED GENUS 272972:BSK59 nidx=null]
 + Hastites [ACCEPTED GENUS 276829:BZR3D nidx=null]
Hatchericeras
 - Hatchericeras Stanton, 1901 [ACCEPTED GENUS 272972:BSK5B nidx=null]
 + Hatchericeras [ACCEPTED GENUS 276829:BZR3X nidx=null]
Hauericeras
 - Hauericeras de Grossouvre, 1894 [ACCEPTED GENUS 272972:BSK5C nidx=null]
 + Hauericeras [ACCEPTED GENUS 276829:BZR49 nidx=null]
 + Hauericeras [ACCEPTED SUBGENUS 276829:BZR4B nidx=null]
Hauerites
 - Hauerites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSK5F nidx=null]
 + Hauerites [ACCEPTED GENUS 276829:BZR4D nidx=null]
Haugiella
 - Haugiella (Gabilly, 1974) [SYNONYM GENUS 272972:BSK5G nidx=null parent=BSFY5]
 + Haugiella [ACCEPTED GENUS 276829:BZR4K nidx=null]
Hebeisenites
 - Hebeisenites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSK5J nidx=null]
 + Hebeisenites [ACCEPTED GENUS 276829:BZR7H nidx=null]
Hebetoxyites
 - Hebetoxyites Buckman, 1924 [ACCEPTED GENUS 272972:BSK5K nidx=null]
 + Hebetoxyites [ACCEPTED GENUS 276829:BZR7P nidx=null]
Hecticoceras
 - Hecticoceras Bonarelli, 1893 [ACCEPTED GENUS 272972:BSK5L nidx=null]
 + Hecticoceras [ACCEPTED GENUS 276829:BZR87 nidx=null]
Hectoroceras
 - Hectoroceras Spath, 1947 [ACCEPTED GENUS 272972:BSK5M nidx=null]
 + Hectoroceras [ACCEPTED GENUS 276829:BZR88 nidx=null]
Hedenstroemia
 - Hedenstroemia Waagen, 1895 [ACCEPTED GENUS 272972:BSK5N nidx=null]
 + Hedenstroemia [ACCEPTED GENUS 276829:BZR8C nidx=null]
Hedenstroemiidae
 - Hedenstroemiidae Waagen, 1895 [ACCEPTED FAMILY 272972:BSH3T nidx=null]
 + Hedenstroemiidae [ACCEPTED FAMILY 276829:BX2VC nidx=null]
Hegaratites
 - Hegaratites Boughdiri et al., 1999 [ACCEPTED GENUS 272972:BSK5P nidx=null]
 + Hegaratites [ACCEPTED GENUS 276829:BZR96 nidx=null]
Heibergites
 - Heibergites Tozer, 1994 [ACCEPTED GENUS 272972:BSK5Q nidx=null]
 + Heibergites [ACCEPTED GENUS 276829:BZR97 nidx=null]
Helicancylus
 - Helicancylus Gabb, 1869 [ACCEPTED GENUS 272972:BSK5V nidx=null]
 + Helicancylus [ACCEPTED GENUS 276829:BZRFH nidx=null]
Helicoceras
 - Helicoceras d'Orbigny, 1840 [ACCEPTED GENUS 272972:BSGHQ nidx=null]
 + Helicoceras [ACCEPTED GENUS 276829:BWGR2 nidx=null]
Helicocyclus
 - Helicocyclus Schindewolf, 1951 [ACCEPTED GENUS 272972:BSK5W nidx=null]
 + Helicocyclus [ACCEPTED GENUS 276829:BZRHH nidx=null]
Helictites
 - Helictites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSK5X nidx=null]
 + Helictites [ACCEPTED GENUS 276829:BZRLX nidx=null]
Hellenites
 - Hellenites Renz & Renz, 1948 [ACCEPTED GENUS 272972:BSK62 nidx=null]
 + Hellenites [ACCEPTED GENUS 276829:BZRRV nidx=null]
Hellenitidae
 - Hellenitidae Kummel, 1952 [ACCEPTED FAMILY 272972:BSH3V nidx=null]
 + Hellenitidae [ACCEPTED FAMILY 276829:BX2W3 nidx=null]
Hemicrioceras
 - Hemicrioceras Spath, 1924 [ACCEPTED GENUS 272972:BSK63 nidx=null]
 + Hemicrioceras [ACCEPTED GENUS 276829:BZS23 nidx=null]
Hemihoplites
 - Hemihoplites Spath, 1924 [ACCEPTED GENUS 272972:BSK67 nidx=null]
 + Hemihoplites [ACCEPTED GENUS 276829:BZS65 nidx=null]
Hemihoplitidae
 - Hemihoplitidae Spath, 1924 [ACCEPTED FAMILY 272972:BSH3W nidx=null]
 + Hemihoplitidae [ACCEPTED FAMILY 276829:BX2WP nidx=null]
Hemilecanites
 - Hemilecanites Spath, 1934 [ACCEPTED GENUS 272972:BSK68 nidx=null]
 + Hemilecanites [ACCEPTED GENUS 276829:BZS6N nidx=null]
Hemilecanitidae
 - Hemilecanitidae Guex et al., 2010 [ACCEPTED FAMILY 272972:BSH3X nidx=null]
 + Hemilecanitidae [ACCEPTED FAMILY 276829:BX2WQ nidx=null]
Hemiprionites
 - Hemiprionites Spath, 1929 [ACCEPTED GENUS 272972:BSK69 nidx=null]
 + Hemiprionites [ACCEPTED GENUS 276829:BZSC4 nidx=null]
Hemiptychoceras
 - Hemiptychoceras Spath, 1925 [ACCEPTED GENUS 272972:BSK6B nidx=null]
 + Hemiptychoceras [ACCEPTED GENUS 276829:BZSCL nidx=null]
Hemitissotia
 - Hemitissotia Peron, 1897 [ACCEPTED GENUS 272972:BSK6C nidx=null]
 + Hemitissotia [ACCEPTED GENUS 276829:BZSFF nidx=null]
Hengshanites
 - Hengshanites Zhou, 1985 [SYNONYM GENUS 272972:BSK6D nidx=null parent=BSHLC]
 + Hengshanites [ACCEPTED GENUS 276829:BZSJ7 nidx=null]
Hepialidae
 - Hepialidae [ACCEPTED FAMILY 272972:62553 nidx=null]
 + Hepialidae Stephens, [1828] [ACCEPTED FAMILY 276829:BV3KX nidx=null]
Hepialus decorata
 - Hepialus decorata Rebel, 1910 [SYNONYM SPECIES 272972:974TH nidx=null parent=9475K]
 + Hepialus decorata Krulikowsky, 1908 [SYNONYM SPECIES 276829:D29SG nidx=null parent=9475K]
Hepialus fuscus
 - Hepialus fuscus Haworth, 1809 [AMBIGUOUS_SYNONYM SPECIES 272972:3KWFB nidx=null parent=943YD]
 - Hepialus fuscus Mabille, 1885 [AMBIGUOUS_SYNONYM SPECIES 272972:934VB nidx=null parent=96JRQ]
 + Hepialus fuscus Haworth, 1811 [AMBIGUOUS_SYNONYM SPECIES 276829:CKT93 nidx=null parent=943YD]
 + Hepialus fuscus Mabille, 1888 [AMBIGUOUS_SYNONYM SPECIES 276829:CKT94 nidx=null parent=96JRQ]
Hepialus pyrenaeus
 - Hepialus pyrenaeus Herrich-Schäffer [SYNONYM SPECIES 272972:934VF nidx=null parent=94D8X]
 + Hepialus pyrenaeus Herrich-Schäffer, [1846] [SYNONYM SPECIES 276829:3KWGK nidx=null parent=94D8X]
Hepiolus socordis
 - Hepiolus socordis Freyer, 1850 [SYNONYM SPECIES 272972:3KWH7 nidx=null parent=946W9]
 + Hepiolus socordis Freyer, 1852 [SYNONYM SPECIES 276829:CLS8M nidx=null parent=946W9]
Hepiolus uredo
 - Hepiolus uredo Freyer, 1850 [SYNONYM SPECIES 272972:3KWH8 nidx=null parent=946W9]
 + Hepiolus uredo Freyer, 1852 [SYNONYM SPECIES 276829:CLS8Q nidx=null parent=946W9]
Heraclites
 - Heraclites Mojsisovics [ACCEPTED GENUS 272972:BSK6F nidx=null]
 + Heraclites [ACCEPTED GENUS 276829:BZSXW nidx=null]
Heraclitidae
 - Heraclitidae Diener, 1920 [ACCEPTED FAMILY 272972:BSH3Y nidx=null]
 + Heraclitidae [ACCEPTED FAMILY 276829:BX2XH nidx=null]
Hermannites
 - Hermannites Brühwiler et al., 2012 [ACCEPTED GENUS 272972:BSK6G nidx=null]
 + Hermannites [ACCEPTED GENUS 276829:BZT7Q nidx=null]
Herrickiceras
 - Herrickiceras Cobban & Hook, 1980 [SYNONYM GENUS 272972:BSK6K nidx=null parent=BSN84]
 + Herrickiceras [ACCEPTED GENUS 276829:BZTG6 nidx=null]
Hertleinia
 - Hertleinia Imlay, 1957 [SYNONYM GENUS 272972:BSFNS nidx=null parent=BSK6L]
 + Hertleinia J. G. Marks, 1949 [ACCEPTED GENUS 276829:BTRRG nidx=null]
Hertleinites
 - Hertleinites Imlay, 1958 [ACCEPTED GENUS 272972:BSK6L nidx=null]
 + Hertleinites [ACCEPTED GENUS 276829:BZTGK nidx=null]
Herznachites
 - Herznachites Jeannet, 1951 [ACCEPTED GENUS 272972:BSK6M nidx=null]
 + Herznachites [ACCEPTED GENUS 276829:BZTGM nidx=null]
Heteroceras
 - Heteroceras d'Orbigny, 1849 [ACCEPTED GENUS 272972:BSGHS nidx=null]
 + Heteroceras [ACCEPTED GENUS 276829:BWH4K nidx=null]
 + Heteroceras [ACCEPTED SUBGENUS 276829:BWH4L nidx=null]
Heteroceratidae
 - Heteroceratidae Spath, 1922 [ACCEPTED FAMILY 272972:BSH3Z nidx=null]
 + Heteroceratidae [ACCEPTED FAMILY 276829:BX2Y5 nidx=null]
Heterotissotia
 - Heterotissotia Peron, 1897 [ACCEPTED GENUS 272972:BSK6W nidx=null]
 + Heterotissotia [ACCEPTED GENUS 276829:BZV3G nidx=null]
Hexaclymenia
 - Hexaclymenia Schindewolf, 1923 [ACCEPTED GENUS 272972:BSK72 nidx=null]
 + Hexaclymenia [ACCEPTED GENUS 276829:BZV5S nidx=null]
Hibolites
 - Hibolites (Mayer-Eymar, 1883) [ACCEPTED GENUS 272972:BSK7B nidx=null]
 + Hibolites [ACCEPTED GENUS 276829:BZV8Z nidx=null]
Hibolithes
 - Hibolithes Montfort, 1808 [ACCEPTED GENUS 272972:BSK7H nidx=null]
 + Hibolithes [ACCEPTED GENUS 276829:BZV92 nidx=null]
Hieraciodes
 - Hieraciodes Möhring ex Kuntze [SYNONYM UNRANKED 272972:B48KZ nidx=null parent=3VMZ]
 + Hieraciodes Möhring ex Kuntze [SYNONYM UNRANKED 276829:D7Q4F nidx=null parent=3VMZ]
Hildocerataceae
 - Hildocerataceae Hyatt, 1867 [ACCEPTED SUPERFAMILY 272972:BSFXJ nidx=null]
 + Hildocerataceae [ACCEPTED SUPERFAMILY 276829:BV9LV nidx=null]
Hildoceratidae
 - Hildoceratidae Hyatt, 1867 [ACCEPTED FAMILY 272972:BSH42 nidx=null]
 + Hildoceratidae [ACCEPTED FAMILY 276829:BX325 nidx=null]
Himalayitidae
 - Himalayitidae (Spath, 1925) [ACCEPTED FAMILY 272972:BSH43 nidx=null]
 + Himalayitidae [ACCEPTED FAMILY 276829:BX326 nidx=null]
Himantoceras
 - Himantoceras Thieuloy, 1965 [ACCEPTED GENUS 272972:BSK7P nidx=null]
 + Himantoceras [ACCEPTED GENUS 276829:BZVJ8 nidx=null]
Himantoceratidae
 - Himantoceratidae Dimitrova, 1970 [ACCEPTED FAMILY 272972:BSH44 nidx=null]
 + Himantoceratidae [ACCEPTED FAMILY 276829:BX328 nidx=null]
Himavatites
 - Himavatites Diener, 1906 [ACCEPTED GENUS 272972:BSK7Q nidx=null]
 + Himavatites [ACCEPTED GENUS 276829:BZVKM nidx=null]
Hippopsis lemniscatus
 - Hippopsis lemniscatus [AMBIGUOUS_SYNONYM SPECIES 272972:BSGLQ nidx=null parent=3M2RT]
 + Hippopsis lemniscatus (Fabricius, 1801) [AMBIGUOUS_SYNONYM SPECIES 276829:BWLN7 nidx=null parent=3M2RK]
 + Hippopsis lemniscatus [AMBIGUOUS_SYNONYM SPECIES 276829:BWLN8 nidx=null parent=3M2RT]
Hisnitites
 - Hisnitites Tozer, 1994 [ACCEPTED GENUS 272972:BSK7T nidx=null]
 + Hisnitites [ACCEPTED GENUS 276829:BZW2L nidx=null]
Hochuliites
 - Hochuliites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSK7V nidx=null]
 + Hochuliites [ACCEPTED GENUS 276829:BZW6M nidx=null]
Hoeninghausia
 - Hoeninghausia Gurich, 1896 [ACCEPTED GENUS 272972:BSK7W nidx=null]
 + Hoeninghausia [ACCEPTED GENUS 276829:BZW6Y nidx=null]
Hoffmannia
 - Hoffmannia (Gemmellaro, 1887) [SYNONYM GENUS 272972:BSFYG nidx=null parent=BSLC2]
 + Hoffmannia Forcart, 1953 [SYNONYM GENUS 276829:BVBDW nidx=null parent=C4DBM]
Holcodiscidae
 - Holcodiscidae Spath, 1924 [ACCEPTED FAMILY 272972:BSH45 nidx=null]
 + Holcodiscidae [ACCEPTED FAMILY 276829:BX33J nidx=null]
Holcodiscus
 - Holcodiscus Uhlig, 1882 [ACCEPTED GENUS 272972:BSK7Y nidx=null]
 + Holcodiscus [ACCEPTED GENUS 276829:BZW9B nidx=null]
Holcophylloceras
 - Holcophylloceras Spath, 1927 [ACCEPTED GENUS 272972:BSK7Z nidx=null]
 + Holcophylloceras [ACCEPTED GENUS 276829:BZW9N nidx=null]
Hollandites
 - Hollandites (Diener, 1907) [ACCEPTED GENUS 272972:BSK82 nidx=null]
 + Hollandites [ACCEPTED GENUS 276829:BZWBL nidx=null]
Hollandites visvakarma
 - Hollandites visvakarma (Diener, 1895) [ACCEPTED SPECIES 272972:BSTBR nidx=null]
 + Hollandites visvakarma Diener, 1913 [ACCEPTED SPECIES 276829:CM5XF nidx=null]
Hollisites
 - Hollisites Imlay, 1957 [ACCEPTED GENUS 272972:BSK87 nidx=null]
 + Hollisites [ACCEPTED GENUS 276829:BZWC2 nidx=null]
Hollisites lucasi
 - Hollisites lucasi Imlay, 1957 [ACCEPTED SPECIES 272972:BSTBS nidx=null]
 + Hollisites lucasi Inlay, 1957 [ACCEPTED SPECIES 276829:CM5YN nidx=null]
Holzapfeloceras
 - Holzapfeloceras Miller, 1932 [ACCEPTED GENUS 272972:BSK88 nidx=null]
 + Holzapfeloceras [ACCEPTED GENUS 276829:BZWGV nidx=null]
Homerites
 - Homerites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSK89 nidx=null]
 + Homerites [ACCEPTED GENUS 276829:BZWJP nidx=null]
Homeroceras
 - Homeroceras Tozer, 1994 [ACCEPTED GENUS 272972:BSK8C nidx=null]
 + Homeroceras [ACCEPTED GENUS 276829:BZWJQ nidx=null]
Homoceras
 - Homoceras Sepkoski, 2002 [ACCEPTED GENUS 272972:BSK8D nidx=null]
 + Homoceras [ACCEPTED GENUS 276829:BZWJW nidx=null]
Homoceratidae
 - Homoceratidae Spath, 1934 [ACCEPTED FAMILY 272972:BSH46 nidx=null]
 + Homoceratidae [ACCEPTED FAMILY 276829:BX346 nidx=null]
Homoceratoides
 - Homoceratoides Bisat, 1924 [ACCEPTED GENUS 272972:BSK8F nidx=null]
 + Homoceratoides [ACCEPTED GENUS 276829:BZWJX nidx=null]
Homolsomites
 - Homolsomites Crickmay, 1930 [ACCEPTED GENUS 272972:BSK8J nidx=null]
 + Homolsomites [ACCEPTED GENUS 276829:BZWL7 nidx=null]
Hongshuiheites
 - Hongshuiheites Yang & Xiong, 1990 [ACCEPTED GENUS 272972:BSK8K nidx=null]
 + Hongshuiheites [ACCEPTED GENUS 276829:BZWM8 nidx=null]
Hoplitaceaea
 - Hoplitaceaea Douvillé, 1890 [ACCEPTED SUPERFAMILY 272972:BSGVK nidx=null]
 + Hoplitaceaea [ACCEPTED SUPERFAMILY 276829:BWXLX nidx=null]
Hoplitidae
 - Hoplitidae Douvillé, 1890 [ACCEPTED FAMILY 272972:BSH47 nidx=null]
 + Hoplitidae [ACCEPTED FAMILY 276829:BX34H nidx=null]
Hoplitoides
 - Hoplitoides von Koenen, 1898 [ACCEPTED GENUS 272972:BSK8L nidx=null]
 + Hoplitoides [ACCEPTED GENUS 276829:BZWQX nidx=null]
Hoplitoplacenticeras
 - Hoplitoplacenticeras Paulcke, 1906 [ACCEPTED GENUS 272972:BSK8M nidx=null]
 + Hoplitoplacenticeras [ACCEPTED GENUS 276829:BZWQY nidx=null]
 + Hoplitoplacenticeras [ACCEPTED SUBGENUS 276829:BZWQZ nidx=null]
Hoplocrioceras
 - Hoplocrioceras Spath, 1924 [ACCEPTED GENUS 272972:BSK8P nidx=null]
 + Hoplocrioceras [ACCEPTED GENUS 276829:BZWRP nidx=null]
Hoploscaphites
 - Hoploscaphites (Nowak, 1911) [ACCEPTED GENUS 272972:BSK8Q nidx=null]
 + Hoploscaphites [ACCEPTED GENUS 276829:BZWT3 nidx=null]
Hoplotropites
 - Hoplotropites Spath, 1929 [ACCEPTED GENUS 272972:BSK8T nidx=null]
 + Hoplotropites [ACCEPTED GENUS 276829:BZWTT nidx=null]
Huananoceras
 - Huananoceras Zhao & Liang, 1974 [ACCEPTED GENUS 272972:BSK8V nidx=null]
 + Huananoceras [ACCEPTED GENUS 276829:BZX2T nidx=null]
Huananoceratidae
 - Huananoceratidae Zhao et al., 1978 [ACCEPTED FAMILY 272972:BSH48 nidx=null]
 + Huananoceratidae [ACCEPTED FAMILY 276829:BX34W nidx=null]
Hubeitoceras
 - Hubeitoceras Waterhouse, 1994 [ACCEPTED GENUS 272972:BSK8W nidx=null]
 + Hubeitoceras [ACCEPTED GENUS 276829:BZX3Z nidx=null]
Hudsonoceras
 - Hudsonoceras Moore, 1946 [ACCEPTED GENUS 272972:BSK8X nidx=null]
 + Hudsonoceras [ACCEPTED GENUS 276829:BZX4H nidx=null]
Huishuites
 - Huishuites Zhao & Wang, 1974 [ACCEPTED GENUS 272972:BSK8Y nidx=null]
 + Huishuites [ACCEPTED GENUS 276829:BZX5K nidx=null]
Humboldtites
 - Humboldtites Silberling & Nichols, 1982 [ACCEPTED GENUS 272972:BSK8Z nidx=null]
 + Humboldtites [ACCEPTED GENUS 276829:BZX62 nidx=null]
Hungarites
 - Hungarites (Mojsisovics, 1879) [ACCEPTED GENUS 272972:BSK92 nidx=null]
 + Hungarites [ACCEPTED GENUS 276829:BZX75 nidx=null]
Hungaritidae
 - Hungaritidae Waagen, 1895 [ACCEPTED FAMILY 272972:BSH49 nidx=null]
 + Hungaritidae [ACCEPTED FAMILY 276829:BX35B nidx=null]
Hyalopterus amygdalus
 - Hyalopterus amygdalus [SYNONYM SPECIES 272972:9XWP9 nidx=null parent=6MGL6]
 + Hyalopterus amygdalus [SYNONYM SPECIES 276829:C77XV nidx=null parent=6MGL6]
Hyattites
 - Hyattites von Mojsisovics, 1902 [ACCEPTED GENUS 272972:BSK95 nidx=null]
 + Hyattites [ACCEPTED GENUS 276829:BZXDL nidx=null]
Hyattoceras
 - Hyattoceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSK96 nidx=null]
 + Hyattoceras [ACCEPTED GENUS 276829:BZXDM nidx=null]
Hymenanthera
 - Hymenanthera R.Br. [SYNONYM UNRANKED 272972:5TB56 nidx=null parent=5NPX]
 + Hymenanthera R.Br. [SYNONYM UNRANKED 276829:BWHVG nidx=null parent=5NPX]
Hypacanthoplites
 - Hypacanthoplites (Spath, 1923) [ACCEPTED GENUS 272972:BSK99 nidx=null]
 + Hypacanthoplites [ACCEPTED GENUS 276829:BZXSY nidx=null]
Hypasteroceras
 - Hypasteroceras Spath, 1923 [ACCEPTED GENUS 272972:BSK9D nidx=null]
 + Hypasteroceras [ACCEPTED GENUS 276829:BZXTR nidx=null]
Hypengonoceras
 - Hypengonoceras Spath, 1922 [ACCEPTED GENUS 272972:BSK9F nidx=null]
 + Hypengonoceras [ACCEPTED GENUS 276829:BZXV3 nidx=null]
Hypergoniatites
 - Hypergoniatites Ruzhencev & Bogoslovskaya, 1970 [ACCEPTED GENUS 272972:BSK9G nidx=null]
 + Hypergoniatites [ACCEPTED GENUS 276829:BZXXR nidx=null]
Hyperomyzus (Hyperomyzella) rhinanthi
 - Hyperomyzus (Hyperomyzella) rhinanthi (Schouteden, 1903) [ACCEPTED SPECIES 272972:3NR5R nidx=null]
 + Hyperomyzus (Hyperomyzella) rhinanthi (Schouteden, 1903) [ACCEPTED SPECIES 276829:CLNTH nidx=null]
Hyphantoceras
 - Hyphantoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSK9H nidx=null]
 + Hyphantoceras [ACCEPTED GENUS 276829:BZY3N nidx=null]
 + Hyphantoceras [ACCEPTED SUBGENUS 276829:BZY3P nidx=null]
Hyphoplites
 - Hyphoplites Spath, 1922 [ACCEPTED GENUS 272972:BSK9K nidx=null]
 + Hyphoplites [ACCEPTED GENUS 276829:BZY4W nidx=null]
Hypisculites
 - Hypisculites Spath, 1951 [ACCEPTED GENUS 272972:BSK9L nidx=null]
 + Hypisculites [ACCEPTED GENUS 276829:BZY5M nidx=null]
Hypocladiscites
 - Hypocladiscites (Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSK9N nidx=null]
 + Hypocladiscites [ACCEPTED GENUS 276829:BZY98 nidx=null]
Hypocladiscites subtornatus
 - Hypocladiscites subtornatus (Mojsisovics, 1882) [SYNONYM SPECIES 272972:BSTF4 nidx=null parent=BT8MK]
 + Hypocladiscites subtornatus (von Mojsisovics, 1873) [ACCEPTED SPECIES 276829:CMMWJ nidx=null]
Hypophiceras
 - Hypophiceras (Trümpy, 1969) [ACCEPTED GENUS 272972:BSK9T nidx=null]
 + Hypophiceras [ACCEPTED GENUS 276829:BZYFB nidx=null]
Hypophylloceras
 - Hypophylloceras (Salfeld, 1924) [SYNONYM GENUS 272972:BSN2Q nidx=null parent=BSN2S]
 + Hypophylloceras [ACCEPTED SUBGENUS 276829:C5YNR nidx=null]
Hypoturrilites
 - Hypoturrilites Dubourdieu, 1953 [ACCEPTED GENUS 272972:BSK9W nidx=null]
 + Hypoturrilites [ACCEPTED GENUS 276829:BZYG7 nidx=null]
Hysteroceras
 - Hysteroceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSFZ6 nidx=null]
 + Hysteroceras [ACCEPTED GENUS 276829:BVBYV nidx=null]
Idahocolumbites
 - Idahocolumbites Guex et al., 2005 [ACCEPTED GENUS 272972:BSK9Z nidx=null]
 + Idahocolumbites [ACCEPTED GENUS 276829:BZYRQ nidx=null]
Idaoceras
 - Idaoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSKB2 nidx=null]
 + Idaoceras [ACCEPTED GENUS 276829:BZYRZ nidx=null]
Idiohamites
 - Idiohamites Spath, 1925 [ACCEPTED GENUS 272972:BSKB4 nidx=null]
 + Idiohamites [ACCEPTED GENUS 276829:BZYVW nidx=null]
Illinoia (Illinoia) azaleae
 - Illinoia (Illinoia) azaleae (Mason, 1925) [ACCEPTED SPECIES 272972:3PGS6 nidx=null]
 + Illinoia (Illinoia) azaleae (Mason, 1925) [ACCEPTED SPECIES 276829:BZBWX nidx=null]
Imitoceras
 - Imitoceras (Schindewolf, 1923) [ACCEPTED GENUS 272972:BSKB6 nidx=null]
 + Imitoceras [ACCEPTED GENUS 276829:BZZ58 nidx=null]
Immunitoceras
 - Immunitoceras Stoyanow, 1949 [ACCEPTED GENUS 272972:BSKB9 nidx=null]
 + Immunitoceras [ACCEPTED GENUS 276829:BZZ5C nidx=null]
Indigirites
 - Indigirites Popov, 1947 [ACCEPTED GENUS 272972:BSKBB nidx=null]
 + Indigirites [ACCEPTED GENUS 276829:BZZ87 nidx=null]
Indigirophyllites
 - Indigirophyllites Popov, 1961 [ACCEPTED GENUS 272972:BSKBC nidx=null]
 + Indigirophyllites [ACCEPTED GENUS 276829:BZZ88 nidx=null]
Indoceltites
 - Indoceltites Diener, 1919 [ACCEPTED GENUS 272972:BSKBD nidx=null]
 + Indoceltites [ACCEPTED GENUS 276829:BZZ9C nidx=null]
Indojuvavites
 - Indojuvavites Diener, 1916 [ACCEPTED GENUS 272972:BSKBF nidx=null]
 + Indojuvavites [ACCEPTED GENUS 276829:BZZB4 nidx=null]
Indonesites
 - Indonesites Welter, 1914 [ACCEPTED GENUS 272972:BSKBG nidx=null]
 + Indonesites [ACCEPTED GENUS 276829:BZZC3 nidx=null]
Indoscaphites
 - Indoscaphites Spath, 1953 [ACCEPTED GENUS 272972:BSKBH nidx=null]
 + Indoscaphites [ACCEPTED GENUS 276829:BZZCN nidx=null]
Iniskinites
 - Iniskinites Imlay, 1975 [ACCEPTED GENUS 272972:BSKBL nidx=null]
 + Iniskinites [ACCEPTED GENUS 276829:BZZGN nidx=null]
Intornites
 - Intornites Asserto, 1966 [ACCEPTED GENUS 272972:BSKBM nidx=null]
 + Intornites [ACCEPTED GENUS 276829:BZZL4 nidx=null]
Intranodites
 - Intranodites Jeannet, 1951 [ACCEPTED GENUS 272972:BSKBN nidx=null]
 + Intranodites [ACCEPTED GENUS 276829:BZZL9 nidx=null]
Inyoceras
 - Inyoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSKBP nidx=null]
 + Inyoceras [ACCEPTED GENUS 276829:BZZM8 nidx=null]
Inyoites
 - Inyoites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSKBQ nidx=null]
 + Inyoites [ACCEPTED GENUS 276829:BZZMC nidx=null]
Inyoitidae
 - Inyoitidae (Spath, 1934) [ACCEPTED FAMILY 272972:BSH4D nidx=null]
 + Inyoitidae [ACCEPTED FAMILY 276829:BX394 nidx=null]
Ionidium
 - Ionidium Vent. [SYNONYM UNRANKED 272972:7NBPL nidx=null parent=63P2J]
 + Ionidium Vent. [SYNONYM UNRANKED 276829:BWJ78 nidx=null parent=63P2J]
Iranites
 - Iranites Teichert & Kummel, 1973 [ACCEPTED GENUS 272972:BSKBR nidx=null]
 + Iranites [ACCEPTED GENUS 276829:BZZRP nidx=null]
 + Iranites Rahaghi, 1976 [SYNONYM GENUS 276829:BZZRQ nidx=null parent=8FVTJ]
Irdanites
 - Irdanites Klug, 2001 [ACCEPTED GENUS 272972:BSKBS nidx=null]
 + Irdanites [ACCEPTED GENUS 276829:BZZSN nidx=null]
Irinoceras
 - Irinoceras (Ruzhencev, 1947) [ACCEPTED GENUS 272972:BSKBT nidx=null]
 + Irinoceras [ACCEPTED GENUS 276829:BZZTL nidx=null]
Isculites
 - Isculites Mojsisovics, 1886 [ACCEPTED GENUS 272972:BSKBX nidx=null]
 - Isculites Arthaber, 1911 [SYNONYM GENUS 272972:BSKBY nidx=null parent=BSKBZ]
 + Isculites [ACCEPTED GENUS 276829:C222L nidx=null]
Isculitidae
 - Isculitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH4F nidx=null]
 + Isculitidae [ACCEPTED FAMILY 276829:BX39T nidx=null]
Isculitoides
 - Isculitoides Spath, 1930 [ACCEPTED GENUS 272972:BSKBZ nidx=null]
 + Isculitoides [ACCEPTED GENUS 276829:C222M nidx=null]
Ismidites
 - Ismidites Arthaber, 1915 [ACCEPTED GENUS 272972:BSKC2 nidx=null]
 + Ismidites [ACCEPTED GENUS 276829:C223R nidx=null]
Isohomoceras
 - Isohomoceras Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSKC5 nidx=null]
 + Isohomoceras [ACCEPTED GENUS 276829:C226D nidx=null]
Istreites
 - Istreites Simionescu, 1913 [ACCEPTED GENUS 272972:BSKC6 nidx=null]
 + Istreites [ACCEPTED GENUS 276829:C22B7 nidx=null]
Istycoceras
 - Istycoceras Pavlov, 1967 [ACCEPTED GENUS 272972:BSKC7 nidx=null]
 + Istycoceras [ACCEPTED GENUS 276829:C22BD nidx=null]
Itimaites
 - Itimaites Korn & Ebbighausen, 2006 [ACCEPTED GENUS 272972:BSKC8 nidx=null]
 + Itimaites [ACCEPTED GENUS 276829:C22CP nidx=null]
Ivieolini
 - Ivieolini Howden & Gill, 2000 [ACCEPTED TRIBE 272972:KWT nidx=null]
 + Ivieolini Howden & Gill, 2000 [SYNONYM GENUS 276829:BXDWY nidx=null parent=L7Z]
Ivoites
 - Ivoites De Baets et al., 2009 [ACCEPTED GENUS 272972:BSKCB nidx=null]
 + Ivoites [ACCEPTED GENUS 276829:C22F3 nidx=null]
Jacobella
 - Jacobella Jeannet, 1908 [ACCEPTED GENUS 272972:BSGJF nidx=null]
 + Jacobella Swanson, 1979 [ACCEPTED GENUS 276829:BWJKG nidx=null]
Jacobites
 - Jacobites (Kilian & Reboul, 1909) [ACCEPTED GENUS 272972:BSKCD nidx=null]
 + Jacobites [ACCEPTED GENUS 276829:C22HM nidx=null]
 + Jacobites [ACCEPTED SUBGENUS 276829:C22HN nidx=null]
Jamesonites
 - Jamesonites Buckman, 1923 [ACCEPTED GENUS 272972:BSKCJ nidx=null]
 + Jamesonites [ACCEPTED GENUS 276829:C22KM nidx=null]
Japonites
 - Japonites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSKCL nidx=null]
 + Japonites [ACCEPTED GENUS 276829:C22NB nidx=null]
Japonitidae
 - Japonitidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSH4H nidx=null]
 + Japonitidae [ACCEPTED FAMILY 276829:BX3CH nidx=null]
Jauberticeras
 - Jauberticeras Jacob, 1907 [ACCEPTED GENUS 272972:BSKCM nidx=null]
 + Jauberticeras [ACCEPTED GENUS 276829:C22NX nidx=null]
Jdaidites
 - Jdaidites Korn et al., 2007 [ACCEPTED GENUS 272972:BSKCN nidx=null]
 + Jdaidites [ACCEPTED GENUS 276829:C22PN nidx=null]
Jeanbesseiceras
 - Jeanbesseiceras Guex et al., 2005 [ACCEPTED GENUS 272972:BSKCP nidx=null]
 + Jeanbesseiceras [ACCEPTED GENUS 276829:C22PQ nidx=null]
Jeanthieuloyites
 - Jeanthieuloyites Cooper, 1981 [ACCEPTED GENUS 272972:BSKCR nidx=null]
 + Jeanthieuloyites [ACCEPTED GENUS 276829:C22Q4 nidx=null]
Jeletzkytes
 - Jeletzkytes Riccardi, 1983 [ACCEPTED GENUS 272972:BSKCS nidx=null]
 + Jeletzkytes [ACCEPTED GENUS 276829:C22QF nidx=null]
Jenksites
 - Jenksites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSKCT nidx=null]
 + Jenksites [ACCEPTED GENUS 276829:C22QJ nidx=null]
Jerania
 - Jerania Korn et al., 2010 [ACCEPTED GENUS 272972:BSKCV nidx=null]
 + Jerania [ACCEPTED GENUS 276829:C22QT nidx=null]
Jieshaniceras
 - Jieshaniceras Brühwiler et al., 2008 [ACCEPTED GENUS 272972:BSKCW nidx=null]
 + Jieshaniceras [ACCEPTED GENUS 276829:C22RW nidx=null]
Jilingites
 - Jilingites Liang, 1982 [ACCEPTED GENUS 272972:BSKCX nidx=null]
 + Jilingites [ACCEPTED GENUS 276829:C22S7 nidx=null]
Jinjiangoceras
 - Jinjiangoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSKCY nidx=null]
 + Jinjiangoceras [ACCEPTED GENUS 276829:C22T3 nidx=null]
Jinyaceras
 - Jinyaceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSKCZ nidx=null]
 + Jinyaceras [ACCEPTED GENUS 276829:C22T9 nidx=null]
Joannites
 - Joannites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSKD2 nidx=null]
 + Joannites [ACCEPTED GENUS 276829:C22TM nidx=null]
Joannitidae
 - Joannitidae von Mojsisovics, 1882 [ACCEPTED SUBFAMILY 272972:BSH4J nidx=null]
 + Joannitidae [ACCEPTED FAMILY 276829:BX3CQ nidx=null]
Jouaniceras
 - Jouaniceras Basse, 1939 [ACCEPTED GENUS 272972:BSKD3 nidx=null]
 + Jouaniceras [ACCEPTED GENUS 276829:C22ZB nidx=null]
Jovites
 - Jovites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSKD4 nidx=null]
 + Jovites [ACCEPTED GENUS 276829:C22ZQ nidx=null]
Juddiceras
 - Juddiceras Spath, 1924 [ACCEPTED GENUS 272972:BSKD7 nidx=null]
 + Juddiceras [ACCEPTED GENUS 276829:C232Y nidx=null]
Judicarites
 - Judicarites Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSKD8 nidx=null]
 + Judicarites [ACCEPTED GENUS 276829:C2332 nidx=null]
Julfotirolites
 - Julfotirolites Korn & Ghaderi, 2016 [ACCEPTED GENUS 272972:BSKD9 nidx=null]
 + Julfotirolites [ACCEPTED GENUS 276829:C233W nidx=null]
Julfotoceras
 - Julfotoceras Bando, 1973 [ACCEPTED GENUS 272972:BSKDB nidx=null]
 + Julfotoceras [ACCEPTED GENUS 276829:C233X nidx=null]
Juraphyllites
 - Juraphyllites Müller, 1939 [ACCEPTED GENUS 272972:BSKDC nidx=null]
 + Juraphyllites [ACCEPTED GENUS 276829:C237B nidx=null]
Juraphyllitidae
 - Juraphyllitidae Arkell, 1950 [ACCEPTED FAMILY 272972:BSH4K nidx=null]
 + Juraphyllitidae [ACCEPTED FAMILY 276829:BX3D3 nidx=null]
Juresanites
 - Juresanites Maximova, 1940 [ACCEPTED GENUS 272972:BSKDD nidx=null]
 + Juresanites [ACCEPTED GENUS 276829:C237J nidx=null]
Juvavites
 - Juvavites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSKDF nidx=null]
 + Juvavites [ACCEPTED GENUS 276829:C2382 nidx=null]
Juvavitidae
 - Juvavitidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSH4L nidx=null]
 + Juvavitidae [ACCEPTED FAMILY 276829:BX3D6 nidx=null]
Juvenites
 - Juvenites Smith, 1927 [ACCEPTED GENUS 272972:BSKDG nidx=null]
 + Juvenites [ACCEPTED GENUS 276829:C2384 nidx=null]
Kabylites
 - Kabylites Durand Delga, 1954 [ACCEPTED GENUS 272972:BSKDH nidx=null]
 + Kabylites [ACCEPTED GENUS 276829:C239M nidx=null]
Kamenushkaites
 - Kamenushkaites Zakharov & Smyshlyaeva, 2016 [ACCEPTED GENUS 272972:BSKDQ nidx=null]
 + Kamenushkaites [ACCEPTED GENUS 276829:C23J2 nidx=null]
Kamerunoceras
 - Kamerunoceras Reyment, 1954 [ACCEPTED GENUS 272972:BSKDR nidx=null]
 + Kamerunoceras [ACCEPTED GENUS 276829:C23J8 nidx=null]
Kammerkarites
 - Kammerkarites (Spath, 1924) [ACCEPTED GENUS 272972:BSKDT nidx=null]
 + Kammerkarites [ACCEPTED GENUS 276829:C23JV nidx=null]
Kammerkarites rectiradiatus
 - Kammerkarites rectiradiatus Guex, 1980 [ACCEPTED SPECIES 272972:BSTKS nidx=null]
 + Kammerkarites rectiradiatus Guex, 1995 [ACCEPTED SPECIES 276829:CN8QR nidx=null]
Kamptoclymenia
 - Kamptoclymenia Schindewolf, 1937 [ACCEPTED GENUS 272972:BSKDY nidx=null]
 + Kamptoclymenia [ACCEPTED GENUS 276829:C23K4 nidx=null]
Karaclymenia
 - Karaclymenia Bogoslovsky, 1983 [ACCEPTED GENUS 272972:BSKF9 nidx=null]
 + Karaclymenia [ACCEPTED GENUS 276829:C23NB nidx=null]
Karagandoceratoidea
 - Karagandoceratoidea Librovich, 1957 [ACCEPTED SUPERFAMILY 272972:BSGVL nidx=null]
 + Karagandoceratoidea [ACCEPTED SUPERFAMILY 276829:BWXMQ nidx=null]
Karakaschiceras
 - Karakaschiceras Thieuloy, 1971 [ACCEPTED GENUS 272972:BSKFB nidx=null]
 + Karakaschiceras [ACCEPTED GENUS 276829:C23NJ nidx=null]
Karangatites
 - Karangatites Popov, 1968 [ACCEPTED GENUS 272972:BSKFC nidx=null]
 + Karangatites [ACCEPTED GENUS 276829:C23PQ nidx=null]
Kardailites
 - Kardailites Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSKFT nidx=null]
 + Kardailites [ACCEPTED GENUS 276829:C23QQ nidx=null]
Kargalites
 - Kargalites Ruzhencev, 1938 [ACCEPTED GENUS 272972:BSKFV nidx=null]
 + Kargalites [ACCEPTED GENUS 276829:C23R7 nidx=null]
Karsteniceras
 - Karsteniceras Royo-Gomez, 1945 [ACCEPTED GENUS 272972:BSKFX nidx=null]
 + Karsteniceras [ACCEPTED GENUS 276829:C23T8 nidx=null]
Kashmirites
 - Kashmirites Diener, 1913 [ACCEPTED GENUS 272972:BSKFY nidx=null]
 + Kashmirites [ACCEPTED GENUS 276829:C23VR nidx=null]
Kashmiritidae
 - Kashmiritidae Spath, 1934 [ACCEPTED FAMILY 272972:BSH4M nidx=null]
 + Kashmiritidae [ACCEPTED FAMILY 276829:BX3DM nidx=null]
Kasimlarceltites
 - Kasimlarceltites Lukeneder & Lukeneder, 2014 [ACCEPTED GENUS 272972:BSKFZ nidx=null]
 + Kasimlarceltites [ACCEPTED GENUS 276829:C23VS nidx=null]
Kastanoceras
 - Kastanoceras Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSKG2 nidx=null]
 + Kastanoceras [ACCEPTED GENUS 276829:C23W8 nidx=null]
Katroliceras
 - Katroliceras Spath [ACCEPTED GENUS 272972:BSKG3 nidx=null]
 + Katroliceras [ACCEPTED GENUS 276829:C23X3 nidx=null]
Kazakhoceras
 - Kazakhoceras Ruzhencev, 1947 [ACCEPTED GENUS 272972:BSKG4 nidx=null]
 + Kazakhoceras [ACCEPTED GENUS 276829:C23ZS nidx=null]
Kazakhstania
 - Kazakhstania Librovitch, 1940 [ACCEPTED GENUS 272972:BSKG5 nidx=null]
 + Kazakhstania [ACCEPTED GENUS 276829:C23ZT nidx=null]
Kazakhstanites
 - Kazakhstanites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSKG6 nidx=null]
 + Kazakhstanites [ACCEPTED GENUS 276829:C23ZW nidx=null]
Kazanskyella
 - Kazanskyella Stoyanow, 1949 [ACCEPTED GENUS 272972:BSKG7 nidx=null]
 + Kazanskyella [ACCEPTED GENUS 276829:C2429 nidx=null]
Kellnerites
 - Kellnerites Arthaber, 1912 [ACCEPTED GENUS 272972:BSKGF nidx=null]
 + Kellnerites [ACCEPTED GENUS 276829:C246N nidx=null]
Kelteroceras
 - Kelteroceras Ermakova, 1975 [ACCEPTED GENUS 272972:BSKGG nidx=null]
 + Kelteroceras [ACCEPTED GENUS 276829:C246R nidx=null]
Kennicottia
 - Kennicottia Imlay, 1959 [ACCEPTED GENUS 272972:BSKGH nidx=null]
 + Kennicottia [ACCEPTED GENUS 276829:C248D nidx=null]
Kepplerites
 - Kepplerites Neumayr & Uhlig, 1892 [ACCEPTED GENUS 272972:BSKGJ nidx=null]
 + Kepplerites [ACCEPTED GENUS 276829:C24CZ nidx=null]
 + Kepplerites [ACCEPTED SUBGENUS 276829:C24D2 nidx=null]
Kericserites
 - Kericserites Geczy & Meister, 2007 [ACCEPTED GENUS 272972:BSKGL nidx=null]
 + Kericserites [ACCEPTED GENUS 276829:C24F9 nidx=null]
Keuppites
 - Keuppites Bockwinkel et al., 2009 [ACCEPTED GENUS 272972:BSKGM nidx=null]
 + Keuppites [ACCEPTED GENUS 276829:C24N4 nidx=null]
Keyserlingites
 - Keyserlingites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSKGN nidx=null]
 + Keyserlingites [ACCEPTED GENUS 276829:C24PD nidx=null]
Kiangsiceras
 - Kiangsiceras Zhao & Liang, 1965 [ACCEPTED GENUS 272972:BSKGQ nidx=null]
 + Kiangsiceras [ACCEPTED GENUS 276829:C24VP nidx=null]
Kielcensia
 - Kielcensia Czarnocki, 1989 [ACCEPTED GENUS 272972:BSKGR nidx=null]
 + Kielcensia [ACCEPTED GENUS 276829:C24XS nidx=null]
Kilianella
 - Kilianella (Uhlig, 1905) [ACCEPTED GENUS 272972:BSKGT nidx=null]
 + Kilianella [ACCEPTED GENUS 276829:C24ZD nidx=null]
Kilianiceras
 - Kilianiceras (Djanelidze, 1922) [SYNONYM GENUS 272972:BSN2Z nidx=null parent=BSN32]
 + Kilianiceras [ACCEPTED SUBGENUS 276829:C5YQT nidx=null]
Kimoceras
 - Kimoceras Bogoslovsky, 1980 [ACCEPTED GENUS 272972:BSKGZ nidx=null]
 + Kimoceras [ACCEPTED GENUS 276829:C2524 nidx=null]
Kingites
 - Kingites (Waagen, 1895) [ACCEPTED GENUS 272972:BSKH2 nidx=null]
 + Kingites [ACCEPTED GENUS 276829:C253H nidx=null]
Kingoceras
 - Kingoceras Miller, 1944 [ACCEPTED GENUS 272972:BSKH4 nidx=null]
 + Kingoceras [ACCEPTED GENUS 276829:C253S nidx=null]
Kiparisovites
 - Kiparisovites Astachova, 1964 [ACCEPTED GENUS 272972:BSKH5 nidx=null]
 + Kiparisovites [ACCEPTED GENUS 276829:C2587 nidx=null]
Kirkianella novae-zelandiae glauca
 - Kirkianella novae-zelandiae glauca Allan [SYNONYM INFRASPECIFIC_NAME 272972:93CYH nidx=null parent=4Y9CL]
 + Kirkianella novae-zelandiae glauca Allan [SYNONYM INFRASPECIFIC_NAME 276829:C6H6N nidx=null parent=4Y9CL]
Kirsoceratidae
 - Kirsoceratidae Korn, 2002 [ACCEPTED FAMILY 272972:BSH4N nidx=null]
 + Kirsoceratidae [ACCEPTED FAMILY 276829:BX3FB nidx=null]
Kitchinites
 - Kitchinites Spath, 1922 [ACCEPTED GENUS 272972:BSKH6 nidx=null]
 + Kitchinites [ACCEPTED GENUS 276829:C25K3 nidx=null]
 + Kitchinites [ACCEPTED SUBGENUS 276829:C25K4 nidx=null]
Klamathites
 - Klamathites Smith, 1927 [ACCEPTED GENUS 272972:BSKH8 nidx=null]
 + Klamathites [ACCEPTED GENUS 276829:C25NP nidx=null]
Klamathitidae
 - Klamathitidae Tozer, 1994 [ACCEPTED FAMILY 272972:BSH4P nidx=null]
 + Klamathitidae [ACCEPTED FAMILY 276829:BX3FF nidx=null]
Klipsteinia
 - Klipsteinia von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSKHB nidx=null]
 + Klipsteinia [ACCEPTED GENUS 276829:C25TH nidx=null]
Knemiceras
 - Knemiceras Böhm, 1898 [ACCEPTED GENUS 272972:BSKHC nidx=null]
 + Knemiceras [ACCEPTED GENUS 276829:C25YC nidx=null]
Knemiceratidae
 - Knemiceratidae (Hyatt, 1903) [ACCEPTED FAMILY 272972:BSH4Q nidx=null]
 + Knemiceratidae [ACCEPTED FAMILY 276829:BX3FP nidx=null]
Kocaelia
 - Kocaelia Fantini Sestini, 1990 [ACCEPTED GENUS 272972:BSKHG nidx=null]
 + Kocaelia [ACCEPTED GENUS 276829:C263Y nidx=null]
Koeneniceras
 - Koeneniceras Mikhailova & Baraboshkin, 2002 [ACCEPTED GENUS 272972:BSKHH nidx=null]
 + Koeneniceras [ACCEPTED GENUS 276829:C266J nidx=null]
Koenenites
 - Koenenites (Wedekind, 1913) [ACCEPTED GENUS 272972:BSKHJ nidx=null]
 + Koenenites [ACCEPTED GENUS 276829:C266N nidx=null]
Koenenitidae
 - Koenenitidae Becker & House, 1993 [ACCEPTED FAMILY 272972:BSH4R nidx=null]
 + Koenenitidae [ACCEPTED FAMILY 276829:BX3FV nidx=null]
Kohaticeras
 - Kohaticeras Fatmi & Hölder, 1975 [ACCEPTED GENUS 272972:BSKHM nidx=null]
 + Kohaticeras [ACCEPTED GENUS 276829:C267H nidx=null]
Koiloceras
 - Koiloceras Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSKHN nidx=null]
 + Koiloceras [ACCEPTED GENUS 276829:C269M nidx=null]
Koipatoceras
 - Koipatoceras Silberling & Nichols, 1982 [ACCEPTED GENUS 272972:BSKHP nidx=null]
 + Koipatoceras [ACCEPTED GENUS 276829:C26C9 nidx=null]
Kokenia
 - Kokenia Holzapfel, 1895 [ACCEPTED GENUS 272972:BSKHQ nidx=null]
 + Kokenia [ACCEPTED GENUS 276829:C26CC nidx=null]
Koloceras
 - Koloceras Riccardi et al., 1987 [ACCEPTED GENUS 272972:BSKHR nidx=null]
 + Koloceras [ACCEPTED GENUS 276829:C26F5 nidx=null]
Kolymoglaphyrites
 - Kolymoglaphyrites Kutygin & Ganelin, 2011 [ACCEPTED GENUS 272972:BSKHS nidx=null]
 + Kolymoglaphyrites [ACCEPTED GENUS 276829:C26G6 nidx=null]
Komioceras
 - Komioceras Bogoslovsky, 1958 [ACCEPTED GENUS 272972:BSKHV nidx=null]
 + Komioceras [ACCEPTED GENUS 276829:C26GT nidx=null]
Konglingites
 - Konglingites Zhao & Liang, 1966 [ACCEPTED GENUS 272972:BSKHW nidx=null]
 + Konglingites [ACCEPTED GENUS 276829:C26J4 nidx=null]
Koninckites
 - Koninckites (Waagen, 1895) [ACCEPTED GENUS 272972:BSKHX nidx=null]
 + Koninckites [ACCEPTED GENUS 276829:C26J8 nidx=null]
Koninckites kraffti
 - Koninckites kraffti (Spath, 1930) [ACCEPTED SPECIES 272972:BSTMN nidx=null]
 + Koninckites kraffti (Spath, 1934) [SYNONYM SPECIES 276829:CND6G nidx=null parent=D3QPD]
Koninckites timorensis
 - Koninckites timorensis (Wanner, 1911) [ACCEPTED SPECIES 272972:BSTMP nidx=null]
 + Koninckites timorensis Renz & Renz, 1948 [ACCEPTED SPECIES 276829:CND6H nidx=null]
Koninckitoides
 - Koninckitoides Dagis & Ermakova, 1988 [ACCEPTED GENUS 272972:BSKJ2 nidx=null]
 + Koninckitoides [ACCEPTED GENUS 276829:C26J9 nidx=null]
Kosmoceras
 - Kosmoceras Waagen, 1869 [ACCEPTED GENUS 272972:BSKJ3 nidx=null]
 + Kosmoceras [ACCEPTED GENUS 276829:C26S6 nidx=null]
Kosmoceratidae
 - Kosmoceratidae Haug, 1887 [ACCEPTED FAMILY 272972:BSH4S nidx=null]
 + Kosmoceratidae [ACCEPTED FAMILY 276829:BX3GC nidx=null]
Kosmoclymenia
 - Kosmoclymenia Schindewolf, 1949 [ACCEPTED GENUS 272972:BSKJ4 nidx=null]
 + Kosmoclymenia [ACCEPTED GENUS 276829:C26S7 nidx=null]
Kosmoclymeniidae
 - Kosmoclymeniidae Korn & Price, 1987 [ACCEPTED FAMILY 272972:BSH4T nidx=null]
 + Kosmoclymeniidae [ACCEPTED FAMILY 276829:BX3GD nidx=null]
Kossmatella
 - Kossmatella (Jacob, 1907) [ACCEPTED GENUS 272972:BSKJ5 nidx=null]
 + Kossmatella [ACCEPTED GENUS 276829:C26SB nidx=null]
 + Kossmatella [ACCEPTED SUBGENUS 276829:C26SC nidx=null]
Kossmaticeras
 - Kossmaticeras de Grossouvre, 1901 [ACCEPTED GENUS 272972:BSKJ9 nidx=null]
 + Kossmaticeras [ACCEPTED GENUS 276829:C26SD nidx=null]
 + Kossmaticeras [ACCEPTED SUBGENUS 276829:C26SF nidx=null]
Kossmaticeratidae
 - Kossmaticeratidae Spath, 1922 [ACCEPTED FAMILY 272972:BSH4V nidx=null]
 + Kossmaticeratidae [ACCEPTED FAMILY 276829:BX3GH nidx=null]
Kourazoceras
 - Kourazoceras Becker, 2002 [ACCEPTED GENUS 272972:BSKJC nidx=null]
 + Kourazoceras [ACCEPTED GENUS 276829:C26TG nidx=null]
Kraffticeras
 - Kraffticeras Brühwiler et al., 2012 [ACCEPTED GENUS 272972:BSKJD nidx=null]
 + Kraffticeras [ACCEPTED GENUS 276829:C26V7 nidx=null]
Krumbeckia
 - Krumbeckia Arkell, 1951 [ACCEPTED GENUS 272972:BSVYM nidx=null]
 + Krumbeckia Diener, 1915 [SYNONYM GENUS 276829:CT5NT nidx=null parent=C4PX2]
Kufengoceras
 - Kufengoceras Ruzhencev, 1956 [ACCEPTED GENUS 272972:BSKJG nidx=null]
 + Kufengoceras [ACCEPTED GENUS 276829:C272C nidx=null]
Kurdiceras
 - Kurdiceras Vasicek & Kullmann, 1988 [ACCEPTED GENUS 272972:BSKJH nidx=null]
 + Kurdiceras [ACCEPTED GENUS 276829:C277J nidx=null]
Kushanites
 - Kushanites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSKJK nidx=null]
 + Kushanites [ACCEPTED GENUS 276829:C27B4 nidx=null]
Kusinia
 - Kusinia Korn et al., 2010 [ACCEPTED GENUS 272972:BSKJL nidx=null]
 + Kusinia [ACCEPTED GENUS 276829:C27BH nidx=null]
Kymatites
 - Kymatites Waagen, 1895 [ACCEPTED GENUS 272972:BSFZ8 nidx=null]
 + Kymatites [ACCEPTED GENUS 276829:BVC26 nidx=null]
Labeceras
 - Labeceras Spath, 1925 [ACCEPTED GENUS 272972:BSKJM nidx=null]
 + Labeceras [ACCEPTED GENUS 276829:C27MZ nidx=null]
 + Labeceras [ACCEPTED SUBGENUS 276829:C27N2 nidx=null]
Labeceratidae
 - Labeceratidae (Spath, 1925) [ACCEPTED FAMILY 272972:BSH4W nidx=null]
 + Labeceratidae [ACCEPTED FAMILY 276829:BX3GZ nidx=null]
Laboceras
 - Laboceras Shevyrev, 1961 [ACCEPTED GENUS 272972:BSKJQ nidx=null]
 + Laboceras [ACCEPTED GENUS 276829:C27PQ nidx=null]
Lanceolites
 - Lanceolites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSKK9 nidx=null]
 + Lanceolites [ACCEPTED GENUS 276829:C294T nidx=null]
Lanceolitidae
 - Lanceolitidae (Spath, 1934) [ACCEPTED FAMILY 272972:BSH4Y nidx=null]
 + Lanceolitidae [ACCEPTED FAMILY 276829:BX3JV nidx=null]
Lanceoloboceras
 - Lanceoloboceras Zhao, 1977 [ACCEPTED GENUS 272972:BSKKB nidx=null]
 + Lanceoloboceras [ACCEPTED GENUS 276829:C294X nidx=null]
Lanceoptychites
 - Lanceoptychites Balini, 1998 [ACCEPTED GENUS 272972:BSKKC nidx=null]
 + Lanceoptychites [ACCEPTED GENUS 276829:C295G nidx=null]
Lanpingoceras
 - Lanpingoceras Liang, 1977 [ACCEPTED GENUS 272972:BSKKD nidx=null]
 + Lanpingoceras [ACCEPTED GENUS 276829:C29DH nidx=null]
Lapparentia
 - Lapparentia Monestier, 1921 [SYNONYM GENUS 272972:BSKKJ nidx=null parent=725V]
 + Lapparentia Berthelin, 1885 [ACCEPTED GENUS 276829:C29K9 nidx=null]
Larenites
 - Larenites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSKKK nidx=null]
 + Larenites [ACCEPTED GENUS 276829:C29KR nidx=null]
Latanarcestes
 - Latanarcestes (Schindewolf, 1933) [ACCEPTED GENUS 272972:BSKKL nidx=null]
 + Latanarcestes [ACCEPTED GENUS 276829:C29P6 nidx=null]
Latanarcestidae
 - Latanarcestidae Korn, 2001 [ACCEPTED FAMILY 272972:BSH4Z nidx=null]
 + Latanarcestidae [ACCEPTED FAMILY 276829:BX3K4 nidx=null]
Latisageceras
 - Latisageceras Ruzhencev, 1956 [ACCEPTED GENUS 272972:BSKKN nidx=null]
 + Latisageceras [ACCEPTED GENUS 276829:C29QY nidx=null]
Lecanites
 - Lecanites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSKKP nidx=null]
 + Lecanites [ACCEPTED GENUS 276829:C29XT nidx=null]
Lecanites glaucus
 - Lecanites glaucus (Münster, 1841) [SYNONYM SPECIES 272972:BSTQ2 nidx=null parent=BSP95]
 + Lecanites glaucus (Munster, 1834) [ACCEPTED SPECIES 276829:CNSMM nidx=null]
Lecanitidae
 - Lecanitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH52 nidx=null]
 + Lecanitidae [ACCEPTED FAMILY 276829:BX3KT nidx=null]
Lechites
 - Lechites (Nowak, 1908) [ACCEPTED GENUS 272972:BSKKQ nidx=null]
 + Lechites [ACCEPTED GENUS 276829:C29XZ nidx=null]
 + Lechites [ACCEPTED SUBGENUS 276829:C29Y2 nidx=null]
Leconteia
 - Leconteia Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSKKV nidx=null]
 + Leconteia [ACCEPTED GENUS 276829:C29Y9 nidx=null]
Leconteites
 - Leconteites Casey, 1954 [ACCEPTED GENUS 272972:BSKKW nidx=null]
 + Leconteites [ACCEPTED GENUS 276829:C29YB nidx=null]
Leiodistichites
 - Leiodistichites Tozer, 1994 [ACCEPTED GENUS 272972:BSKKY nidx=null]
 + Leiodistichites [ACCEPTED GENUS 276829:C2B5P nidx=null]
Leiophyllites
 - Leiophyllites (Diener, 1915) [ACCEPTED GENUS 272972:BSKL2 nidx=null]
 + Leiophyllites [ACCEPTED GENUS 276829:C2B6X nidx=null]
Leislingites
 - Leislingites Tatzreiter, 1980 [ACCEPTED GENUS 272972:BSKL4 nidx=null]
 + Leislingites [ACCEPTED GENUS 276829:C2B86 nidx=null]
Lemencia
 - Lemencia Donze & Enay, 1961 [ACCEPTED GENUS 272972:BSKL7 nidx=null]
 + Lemencia [ACCEPTED GENUS 276829:C2BD5 nidx=null]
Lenotropites
 - Lenotropites Popov, 1961 [ACCEPTED GENUS 272972:BSKLB nidx=null]
 + Lenotropites [ACCEPTED GENUS 276829:C2BL6 nidx=null]
Lenticeras
 - Lenticeras Gerhardt, 1898 [ACCEPTED GENUS 272972:BSKLC nidx=null]
 + Lenticeras [ACCEPTED GENUS 276829:C2BLV nidx=null]
Lenticoceltites
 - Lenticoceltites Zhao et al., 1978 [ACCEPTED GENUS 272972:BSKLD nidx=null]
 + Lenticoceltites [ACCEPTED GENUS 276829:C2BLZ nidx=null]
Lenzites
 - Lenzites Becker & House, 1994 [ACCEPTED GENUS 272972:BSFZH nidx=null]
 + Lenzites [ACCEPTED GENUS 276829:BVC9K nidx=null]
Leopoldia
 - Leopoldia Mayer-Eymar, 1887 [ACCEPTED GENUS 272972:BSFZJ nidx=null]
 + Leopoldia [ACCEPTED GENUS 276829:BVC9L nidx=null]
Lepeniceras
 - Lepeniceras Rabrenovic, 1989 [ACCEPTED GENUS 272972:BSKLF nidx=null]
 + Lepeniceras [ACCEPTED GENUS 276829:C2BQQ nidx=null]
Lepiskites
 - Lepiskites Dagis & Ermakova, 1990 [ACCEPTED GENUS 272972:BSKLG nidx=null]
 + Lepiskites [ACCEPTED GENUS 276829:C2BZP nidx=null]
Leptaleoceras
 - Leptaleoceras Buckman, 1918 [ACCEPTED GENUS 272972:BSKLH nidx=null]
 + Leptaleoceras [ACCEPTED GENUS 276829:C2C4T nidx=null]
Leptechioceras
 - Leptechioceras Buckman, 1923 [ACCEPTED GENUS 272972:BSKLK nidx=null]
 + Leptechioceras [ACCEPTED GENUS 276829:C2C6K nidx=null]
Leptoceras
 - Leptoceras (Uhlig, 1883) [ACCEPTED GENUS 272972:BSFZP nidx=null]
 + Leptoceras [ACCEPTED GENUS 276829:BVCC2 nidx=null]
Leptoceratoides
 - Leptoceratoides Thieuloy, 1966 [ACCEPTED GENUS 272972:BSKLP nidx=null]
 + Leptoceratoides [ACCEPTED GENUS 276829:C2CB7 nidx=null]
Leptogyroceras
 - Leptogyroceras Zhao & Liang, 1966 [ACCEPTED GENUS 272972:BSKLR nidx=null]
 + Leptogyroceras [ACCEPTED GENUS 276829:C2CMS nidx=null]
Leucanthemopsis virescens
 - Leucanthemopsis virescens (Pau) Pérez-Romero, Pérez Morales, del Río & Penas [SYNONYM SPECIES 272972:8WD25 nidx=null parent=BNLJ4]
 + Leucanthemopsis virescens (Pau) Pérez-Romero, Pérez Morales, del Río & Penas [SYNONYM SPECIES 276829:CP8LC nidx=null parent=BNLJ4]
Lewesiceras
 - Lewesiceras Spath, 1939 [ACCEPTED GENUS 272972:BSKLZ nidx=null]
 + Lewesiceras [ACCEPTED GENUS 276829:C2F74 nidx=null]
Leyeceras
 - Leyeceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSKM2 nidx=null]
 + Leyeceras [ACCEPTED GENUS 276829:C2F7B nidx=null]
Leymeriellidae
 - Leymeriellidae Breistroffer, 1951 [ACCEPTED FAMILY 272972:BSH53 nidx=null]
 + Leymeriellidae [ACCEPTED FAMILY 276829:BX3N4 nidx=null]
Lianyuanoceras
 - Lianyuanoceras Zhou, 1985 [ACCEPTED GENUS 272972:BSKM4 nidx=null]
 + Lianyuanoceras [ACCEPTED GENUS 276829:C2F8M nidx=null]
Liardites
 - Liardites Tozer, 1963 [ACCEPTED GENUS 272972:BSKM5 nidx=null]
 + Liardites [ACCEPTED GENUS 276829:C2F8Q nidx=null]
Libycoceras ismaeli
 - Libycoceras ismaeli (Zittel, 1884) [SYNONYM SPECIES 272972:BSTXM nidx=null parent=BTGWV]
 + Libycoceras ismaeli (Zittel, 1895) [ACCEPTED SPECIES 276829:CPDXP nidx=null]
Lijiangoceras
 - Lijiangoceras Liang, 1983 [ACCEPTED GENUS 272972:BSKMJ nidx=null]
 + Lijiangoceras [ACCEPTED GENUS 276829:C2FTK nidx=null]
Lilloettia
 - Lilloettia Crickmay, 1930 [ACCEPTED GENUS 272972:BSKMK nidx=null]
 + Lilloettia [ACCEPTED GENUS 276829:C2FYL nidx=null]
Linguaclymenia
 - Linguaclymenia Korn & Price, 1987 [ACCEPTED GENUS 272972:BSKMR nidx=null]
 + Linguaclymenia [ACCEPTED GENUS 276829:C2GMK nidx=null]
Linguatornoceras
 - Linguatornoceras House, 1965 [ACCEPTED GENUS 272972:BSKMT nidx=null]
 + Linguatornoceras [ACCEPTED GENUS 276829:C2GMT nidx=null]
Lingyunites
 - Lingyunites Chao, 1950 [ACCEPTED GENUS 272972:BSKMV nidx=null]
 + Lingyunites [ACCEPTED GENUS 276829:C2GN3 nidx=null]
Linwuceras
 - Linwuceras Xu, 1977 [ACCEPTED GENUS 272972:BSKMW nidx=null]
 + Linwuceras [ACCEPTED GENUS 276829:C2GP5 nidx=null]
Lioceratoides
 - Lioceratoides Spath, 1919 [ACCEPTED GENUS 272972:BSKMX nidx=null]
 + Lioceratoides [ACCEPTED GENUS 276829:C2GPK nidx=null]
 + Lioceratoides [ACCEPTED SUBGENUS 276829:C2GPL nidx=null]
Liophis bolivianus
 - Liophis bolivianus Werner, 1909: 222 (Part.) [AMBIGUOUS_SYNONYM SPECIES 272972:BKDT8 nidx=null parent=4G8YR]
 + Liophis bolivianus Werner, 1909: 222 (Part.) [AMBIGUOUS_SYNONYM SPECIES 276829:CPJQL nidx=null parent=4G8YR]
 + Liophis bolivianus Werner, 1909 [AMBIGUOUS_SYNONYM SPECIES 276829:CPJQM nidx=null parent=8X3G9]
Liparoceras
 - Liparoceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSKN3 nidx=null]
 + Liparoceras [ACCEPTED GENUS 276829:C2GVH nidx=null]
 + Liparoceras [ACCEPTED SUBGENUS 276829:C2GVJ nidx=null]
Liparoceratidae
 - Liparoceratidae Hyatt, 1867 [ACCEPTED FAMILY 272972:BSH54 nidx=null]
 + Liparoceratidae [ACCEPTED FAMILY 276829:BX3P8 nidx=null]
Lipotactes (Sublipotactes) discus
 - Lipotactes (Sublipotactes) discus Ingrisch, 2021 [ACCEPTED SPECIES 272972:8QHNQ nidx=null]
 + Lipotactes (Sublipotactes) discus Ingrisch, 2021 [ACCEPTED SPECIES 276829:CMZYB nidx=null]
Lissoceras
 - Lissoceras Bayle, 1879 [ACCEPTED GENUS 272972:BSKN5 nidx=null]
 + Lissoceras [ACCEPTED GENUS 276829:C2H37 nidx=null]
Lissoceratidae
 - Lissoceratidae Douville, 1885 [ACCEPTED FAMILY 272972:BSH55 nidx=null]
 + Lissoceratidae [ACCEPTED FAMILY 276829:BX3PG nidx=null]
Lissoclymenia
 - Lissoclymenia Korn & Price, 1987 [ACCEPTED GENUS 272972:BSKN7 nidx=null]
 + Lissoclymenia [ACCEPTED GENUS 276829:C2H3D nidx=null]
Lissonites
 - Lissonites Tozer, 1979 [ACCEPTED GENUS 272972:BSKN8 nidx=null]
 + Lissonites [ACCEPTED GENUS 276829:C2H45 nidx=null]
Lithacoceras
 - Lithacoceras (Hyatt, 1900) [ACCEPTED GENUS 272972:BSKN9 nidx=null]
 + Lithacoceras [ACCEPTED GENUS 276829:C2H5K nidx=null]
Lithacosphinctes
 - Lithacosphinctes Oloriz, 1978 [ACCEPTED GENUS 272972:BSKNC nidx=null]
 + Lithacosphinctes [ACCEPTED GENUS 276829:C2H5N nidx=null]
Liuchengoceras
 - Liuchengoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSKND nidx=null]
 + Liuchengoceras [ACCEPTED GENUS 276829:C2H9B nidx=null]
Liuchengoceratidae
 - Liuchengoceratidae Zhao et al., 1978 [ACCEPTED FAMILY 272972:BSH56 nidx=null]
 + Liuchengoceratidae [ACCEPTED FAMILY 276829:BX3Q2 nidx=null]
Liuzhouceras
 - Liuzhouceras Zhao, 1980 [ACCEPTED GENUS 272972:BSKNF nidx=null]
 + Liuzhouceras [ACCEPTED GENUS 276829:C2HB6 nidx=null]
Lobitaceae
 - Lobitaceae Mojsisovics, 1882 [ACCEPTED SUPERFAMILY 272972:BSGVM nidx=null]
 + Lobitaceae [ACCEPTED SUPERFAMILY 276829:BWXNF nidx=null]
Lobites
 - Lobites von Mojsisovics, 1875 [ACCEPTED GENUS 272972:BSKNG nidx=null]
 + Lobites [ACCEPTED GENUS 276829:C2HD3 nidx=null]
Lobitidae
 - Lobitidae von Mojsisovics, 1882 [ACCEPTED SUBFAMILY 272972:BSH57 nidx=null]
 + Lobitidae [ACCEPTED FAMILY 276829:BX3RC nidx=null]
Lobotornoceras
 - Lobotornoceras Schindewolf, 1936 [ACCEPTED GENUS 272972:BSKNH nidx=null]
 + Lobotornoceras [ACCEPTED GENUS 276829:C2HFT nidx=null]
Longchuanacris macrofurculus
 - Longchuanacris macrofurculus Zheng & Fu, 1989 [SYNONYM SPECIES 272972:3VYLF nidx=null parent=72MPX]
 + Longchuanacris macrofurculus Zheng & Fu, 1989 [SYNONYM SPECIES 276829:DFGPY nidx=null parent=72MPX]
Longchuanacris viridus
 - Longchuanacris viridus Mao & Ou, 2007 [SYNONYM SPECIES 272972:3VYLH nidx=null parent=3VYLJ]
 + Longchuanacris viridus Mao & Ou, 2007 [SYNONYM SPECIES 276829:DFGPZ nidx=null parent=3VYLJ]
Longmenshanoceras
 - Longmenshanoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSKNJ nidx=null]
 + Longmenshanoceras [ACCEPTED GENUS 276829:C2HL7 nidx=null]
Longobardites
 - Longobardites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSKNK nidx=null]
 + Longobardites [ACCEPTED GENUS 276829:C2HL8 nidx=null]
Longobarditidae
 - Longobarditidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH58 nidx=null]
 + Longobarditidae [ACCEPTED FAMILY 276829:BX3S2 nidx=null]
Longobarditoides
 - Longobarditoides Shevyrev, 1961 [ACCEPTED GENUS 272972:BSKNL nidx=null]
 + Longobarditoides [ACCEPTED GENUS 276829:C2HL9 nidx=null]
Lopeziceras
 - Lopeziceras Frau et al., 2016 [ACCEPTED GENUS 272972:BSKNM nidx=null]
 + Lopeziceras [ACCEPTED GENUS 276829:C2HLR nidx=null]
Lotzeites
 - Lotzeites Wiedmann, 1960 [ACCEPTED GENUS 272972:BSKNR nidx=null]
 + Lotzeites [ACCEPTED GENUS 276829:C2HVY nidx=null]
Lucasites
 - Lucasites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSKNT nidx=null]
 + Lucasites [ACCEPTED GENUS 276829:C2J28 nidx=null]
Lunupharciceras
 - Lunupharciceras Korn, 2002 [ACCEPTED GENUS 272972:BSKNY nidx=null]
 + Lunupharciceras [ACCEPTED GENUS 276829:C2J7N nidx=null]
Luppovella
 - Luppovella (Nikolov, 1966) [ACCEPTED GENUS 272972:BSKNZ nidx=null]
 + Luppovella [ACCEPTED GENUS 276829:C2J8J nidx=null]
 + Luppovella [ACCEPTED SUBGENUS 276829:C2J8K nidx=null]
Lusitanites
 - Lusitanites Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSKP4 nidx=null]
 + Lusitanites [ACCEPTED GENUS 276829:C2J8V nidx=null]
Lyelliceras
 - Lyelliceras Spath, 1921 [ACCEPTED GENUS 272972:BSKP8 nidx=null]
 + Lyelliceras [ACCEPTED GENUS 276829:C2JHT nidx=null]
Lyelliceratidae
 - Lyelliceratidae Spath, 1921 [ACCEPTED FAMILY 272972:BSFY3 nidx=null]
 + Lyelliceratidae [ACCEPTED FAMILY 276829:BV9VJ nidx=null]
Lyrogoniatites
 - Lyrogoniatites Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSKPB nidx=null]
 + Lyrogoniatites [ACCEPTED GENUS 276829:C2JLX nidx=null]
Lytheoceras
 - Lytheoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSKPC nidx=null]
 + Lytheoceras [ACCEPTED GENUS 276829:C2JQD nidx=null]
Lyticoceras
 - Lyticoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSKPD nidx=null]
 + Lyticoceras [ACCEPTED GENUS 276829:C2JQH nidx=null]
Lytoceras
 - Lytoceras (Suess, 1865) [ACCEPTED GENUS 272972:BSKPF nidx=null]
 + Lytoceras [ACCEPTED GENUS 276829:C2JQL nidx=null]
 + Lytoceras [ACCEPTED GENUS 276829:C2JQM nidx=null]
Lytocerataceae
 - Lytocerataceae Neumayr, 1875 [ACCEPTED SUPERFAMILY 272972:BSGVN nidx=null]
 + Lytocerataceae [ACCEPTED SUPERFAMILY 276829:BWXNM nidx=null]
Lytoceratidae
 - Lytoceratidae Neumayr, 1875 [ACCEPTED FAMILY 272972:BSH59 nidx=null]
 + Lytoceratidae [ACCEPTED FAMILY 276829:BX3TN nidx=null]
Lytoconites
 - Lytoconites Wiedmann, 1970 [ACCEPTED GENUS 272972:BSKPJ nidx=null]
 + Lytoconites [ACCEPTED GENUS 276829:C2JQW nidx=null]
Lytohamites
 - Lytohamites Casey, 1961 [ACCEPTED GENUS 272972:BSKPK nidx=null]
 + Lytohamites [ACCEPTED GENUS 276829:C2JQY nidx=null]
Lytophiceras
 - Lytophiceras (Spath, 1930) [SYNONYM GENUS 272972:BSN3C nidx=null parent=BSN3F]
 + Lytophiceras [ACCEPTED SUBGENUS 276829:C5Z27 nidx=null]
Lytotropites
 - Lytotropites Spath, 1924 [ACCEPTED GENUS 272972:BSKPL nidx=null]
 + Lytotropites [ACCEPTED GENUS 276829:C2JR8 nidx=null]
Maclearnoceras
 - Maclearnoceras Tozer, 1963 [ACCEPTED GENUS 272972:BSKPR nidx=null]
 + Maclearnoceras [ACCEPTED GENUS 276829:C2K4T nidx=null]
Macrochiton
 - Macrochiton M.Roem. [SYNONYM UNRANKED 272972:7NC4J nidx=null parent=8SBN8]
 + Macrochiton M.Roem. [SYNONYM UNRANKED 276829:BWLMF nidx=null parent=8SBN8]
Macrogrammites
 - Macrogrammites Buckman, 1928 [ACCEPTED GENUS 272972:BSKPX nidx=null]
 + Macrogrammites [ACCEPTED GENUS 276829:C2KH3 nidx=null]
Macroscaphites
 - Macroscaphites Meek, 1876 [ACCEPTED GENUS 272972:BSKQ2 nidx=null]
 + Macroscaphites [ACCEPTED GENUS 276829:C2KZJ nidx=null]
Macroscaphitidae
 - Macroscaphitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH5B nidx=null]
 + Macroscaphitidae [ACCEPTED FAMILY 276829:BX3VF nidx=null]
Macrosiphoniella (Macrosiphoniella) abrotani
 - Macrosiphoniella (Macrosiphoniella) abrotani (Walker, 1852) [ACCEPTED SPECIES 272972:3X9NG nidx=null]
 + Macrosiphoniella (Macrosiphoniella) abrotani (Walker, 1852) [ACCEPTED SPECIES 276829:BZMZR nidx=null]
Macrosiphoniella (Macrosiphoniella) dracunculi
 - Macrosiphoniella (Macrosiphoniella) dracunculi [ACCEPTED SPECIES 272972:BPHSZ nidx=null]
 + Macrosiphoniella (Macrosiphoniella) dracunculi [ACCEPTED SPECIES 276829:CQ5B9 nidx=null]
Macrosiphum (Macrosiphum) doronicicola
 - Macrosiphum (Macrosiphum) doronicicola [ACCEPTED SPECIES 272972:BBWLX nidx=null]
 + Macrosiphum (Macrosiphum) doronicicola [ACCEPTED SPECIES 276829:CNC7M nidx=null]
Macrosiphum (Macrosiphum) valerianae
 - Macrosiphum (Macrosiphum) valerianae (Clarke, 1903) [ACCEPTED SPECIES 272972:BSTMG nidx=null]
 + Macrosiphum (Macrosiphum) valerianae (Clarke, 1903) [ACCEPTED SPECIES 276829:CNC84 nidx=null]
Macrotoma (Navosomopsis) gestroi
 - Macrotoma (Navosomopsis) gestroi Lameere, 1903 [SYNONYM SPECIES 272972:BSV6K nidx=null parent=G6BN]
 + Macrotoma (Navosomopsis) gestroi Lameere, 1903 [SYNONYM SPECIES 276829:CQ63S nidx=null parent=G6BN]
Macrotoma (Prinobius) scutellaris
 - Macrotoma (Prinobius) scutellaris [AMBIGUOUS_SYNONYM SPECIES 272972:BSV8K nidx=null parent=4MDXK]
 + Macrotoma (Prinobius) scutellaris [AMBIGUOUS_SYNONYM SPECIES 276829:CQB2J nidx=null parent=4MDXK]
Maderia
 - Maderia Imlay, 1938 [SYNONYM GENUS 272972:BSKQ8 nidx=null parent=BSL7Q]
 + Maderia [ACCEPTED GENUS 276829:C2LHQ nidx=null]
Maeneceras
 - Maeneceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSKQC nidx=null]
 + Maeneceras [ACCEPTED GENUS 276829:C2LMY nidx=null]
Maenioceras
 - Maenioceras Schindewolf, 1933 [ACCEPTED GENUS 272972:BSKQD nidx=null]
 - Maenioceras Hyatt, 1884 [SYNONYM GENUS 272972:BSKQF nidx=null parent=BSKQC]
 + Maenioceras [ACCEPTED GENUS 276829:C2LN5 nidx=null]
Maenioceratidae
 - Maenioceratidae Bogoslovsky, 1958 [ACCEPTED FAMILY 272972:BSH5C nidx=null]
 + Maenioceratidae [ACCEPTED FAMILY 276829:BX3VR nidx=null]
Maideroceras
 - Maideroceras Becker, 2002 [ACCEPTED GENUS 272972:BSKQH nidx=null]
 + Maideroceras [ACCEPTED GENUS 276829:C2MDC nidx=null]
Malayites
 - Malayites (Welter, 1914) [ACCEPTED GENUS 272972:BSKQQ nidx=null]
 + Malayites [ACCEPTED GENUS 276829:C2NCB nidx=null]
Malletoptychites
 - Malletoptychites Diener, 1916 [ACCEPTED GENUS 272972:BSKQS nidx=null]
 + Malletoptychites [ACCEPTED GENUS 276829:C2NLZ nidx=null]
Mammillaria peacockii
 - Mammillaria peacockii C. F. Först. & Rümpler [SYNONYM SPECIES 272972:B4BTC nidx=null parent=5JJ4F]
 + Mammillaria peacockii C. F. Först. & Rümpler [SYNONYM SPECIES 276829:CQGSX nidx=null parent=5JJ4F]
Mammites
 - Mammites (Laube & Bruder, 1887) [ACCEPTED GENUS 272972:BSKQT nidx=null]
 + Mammites [ACCEPTED GENUS 276829:C2NNZ nidx=null]
Mangyshlakites
 - Mangyshlakites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSKR5 nidx=null]
 + Mangyshlakites [ACCEPTED GENUS 276829:C2NWR nidx=null]
Mantelliceras
 - Mantelliceras (Hyatt, 1903) [ACCEPTED GENUS 272972:BSKRB nidx=null]
 + Mantelliceras [ACCEPTED GENUS 276829:C2NZG nidx=null]
Manticoceras
 - Manticoceras (Hyatt, 1884) [ACCEPTED GENUS 272972:BSKRF nidx=null]
 + Manticoceras [ACCEPTED GENUS 276829:C2NZN nidx=null]
Maorites
 - Maorites Marshall, 1926 [ACCEPTED GENUS 272972:BSKRM nidx=null]
 + Maorites [ACCEPTED GENUS 276829:C2P49 nidx=null]
Mapesites
 - Mapesites Work & Boardman, 2003 [ACCEPTED GENUS 272972:BSKRN nidx=null]
 + Mapesites [ACCEPTED GENUS 276829:C2P4V nidx=null]
Marathonitaceae
 - Marathonitaceae Ruzhencev, 1938 [ACCEPTED SUPERFAMILY 272972:BSGVP nidx=null]
 + Marathonitaceae [ACCEPTED SUPERFAMILY 276829:BWXNT nidx=null]
Marathonites
 - Marathonites (Böse, 1919) [SYNONYM GENUS 272972:BSN3G nidx=null parent=BSN3J]
 + Marathonites [ACCEPTED SUBGENUS 276829:C5Z35 nidx=null]
Marathonitidae
 - Marathonitidae Ruzhencev, 1938 [ACCEPTED FAMILY 272972:BSH5F nidx=null]
 + Marathonitidae [ACCEPTED FAMILY 276829:BX3X7 nidx=null]
Marcouxia
 - Marcouxia Guex et al., 2005 [ACCEPTED GENUS 272972:BSKRQ nidx=null]
 + Marcouxia [ACCEPTED GENUS 276829:C2P69 nidx=null]
Marcouxites
 - Marcouxites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSKRR nidx=null]
 + Marcouxites [ACCEPTED GENUS 276829:C2P6D nidx=null]
Margarijuvavites
 - Margarijuvavites Tozer, 1994 [ACCEPTED GENUS 272972:BSKRS nidx=null]
 + Margarijuvavites [ACCEPTED GENUS 276829:C2P8P nidx=null]
Margarites
 - Margarites Mojsisovics, 1893 [SYNONYM GENUS 272972:BSFNV nidx=null parent=BSK8T]
 + Margarites Gray, 1847 [ACCEPTED GENUS 276829:87GQY nidx=null]
Margaritropites
 - Margaritropites Diener, 1916 [ACCEPTED GENUS 272972:BSKRT nidx=null]
 + Margaritropites [ACCEPTED GENUS 276829:C2P8Z nidx=null]
Marianoceras
 - Marianoceras Librovitch, 1962 [ACCEPTED GENUS 272972:BSKRV nidx=null]
 + Marianoceras [ACCEPTED GENUS 276829:C2PDZ nidx=null]
Mariella
 - Mariella Nowak, 1916 [ACCEPTED GENUS 272972:BSKRW nidx=null]
 + Mariella [ACCEPTED GENUS 276829:C2PGH nidx=null]
 + Mariella [ACCEPTED SUBGENUS 276829:C2PGJ nidx=null]
 + Mariella Dain, 1958 [SYNONYM GENUS 276829:C2PGK nidx=null parent=BW4GH]
 + Mariella [sic] [SYNONYM GENUS 276829:C2PGL nidx=null parent=C2PD4]
Marshallites
 - Marshallites Matsumoto, 1955 [ACCEPTED GENUS 272972:BSKRY nidx=null]
 + Marshallites [ACCEPTED GENUS 276829:C2PMK nidx=null]
Martoceras
 - Martoceras Toumansky, 1938 [ACCEPTED GENUS 272972:BSKS2 nidx=null]
 + Martoceras [ACCEPTED GENUS 276829:C2PQN nidx=null]
Masonaphis (Ericobium) azaleae
 - Masonaphis (Ericobium) azaleae (Mason, 1925) [AMBIGUOUS_SYNONYM SPECIES 272972:BSVCR nidx=null parent=7H9P9]
 + Masonaphis (Ericobium) azaleae (Mason, 1925) [AMBIGUOUS_SYNONYM SPECIES 276829:CQQFQ nidx=null parent=BZBWX]
 + Masonaphis (Ericobium) azaleae (Mason, 1925) [AMBIGUOUS_SYNONYM SPECIES 276829:CQQFR nidx=null parent=7H9P9]
Masonites
 - Masonites Henderson, 1970 [ACCEPTED GENUS 272972:BSKS4 nidx=null]
 + Masonites [ACCEPTED GENUS 276829:C2PXB nidx=null]
Masonoceras
 - Masonoceras Work & Manger, 2002 [ACCEPTED GENUS 272972:BSKS5 nidx=null]
 + Masonoceras [ACCEPTED GENUS 276829:C2PXL nidx=null]
Maternoceras
 - Maternoceras Clausen, 1969 [ACCEPTED GENUS 272972:BSKS7 nidx=null]
 + Maternoceras [ACCEPTED GENUS 276829:C2Q85 nidx=null]
Matheronites
 - Matheronites Renngarten, 1926 [ACCEPTED GENUS 272972:BSKS8 nidx=null]
 + Matheronites [ACCEPTED GENUS 276829:C2Q8B nidx=null]
Mathoceras
 - Mathoceras Casey, 1963 [ACCEPTED GENUS 272972:BSKS9 nidx=null]
 + Mathoceras [ACCEPTED GENUS 276829:C2Q8L nidx=null]
Mauretaniaceras
 - Mauretaniaceras Meister et al., 2011 [ACCEPTED GENUS 272972:BSKSF nidx=null]
 + Mauretaniaceras [ACCEPTED GENUS 276829:C2QD9 nidx=null]
Maxigoniatites
 - Maxigoniatites Korn et al., 1999 [ACCEPTED GENUS 272972:BSKSJ nidx=null]
 + Maxigoniatites [ACCEPTED GENUS 276829:C2QFJ nidx=null]
Maxigoniatitidae
 - Maxigoniatitidae Korn et al., 1999 [ACCEPTED FAMILY 272972:BSH5G nidx=null]
 + Maxigoniatitidae [ACCEPTED FAMILY 276829:BX3XY nidx=null]
Maximites
 - Maximites Miller & Furnish, 1957 [ACCEPTED GENUS 272972:BSKSK nidx=null]
 + Maximites [ACCEPTED GENUS 276829:C2QFM nidx=null]
Maximitidae
 - Maximitidae Ruzhencev, 1960 [ACCEPTED FAMILY 272972:BSH5H nidx=null]
 + Maximitidae [ACCEPTED FAMILY 276829:BX3XZ nidx=null]
Medioclymenia
 - Medioclymenia Korn, 2002 [ACCEPTED GENUS 272972:BSKSP nidx=null]
 + Medioclymenia [ACCEPTED GENUS 276829:C2QNC nidx=null]
Medlicottia
 - Medlicottia Waagen, 1880 [ACCEPTED GENUS 272972:BSKSQ nidx=null]
 + Medlicottia [ACCEPTED GENUS 276829:C2QPC nidx=null]
Medlicottiaceae
 - Medlicottiaceae Karpinsky, 1889 [ACCEPTED SUPERFAMILY 272972:BSFXK nidx=null]
 + Medlicottiaceae [ACCEPTED SUPERFAMILY 276829:BV9LY nidx=null]
Medlicottiidae
 - Medlicottiidae Karpinsky, 1889 [ACCEPTED FAMILY 272972:BSFY4 nidx=null]
 + Medlicottiidae [ACCEPTED FAMILY 276829:BV9VR nidx=null]
Meekoceras
 - Meekoceras Hyatt, 1879 [ACCEPTED GENUS 272972:BSKSR nidx=null]
 + Meekoceras [ACCEPTED GENUS 276829:C2QQ2 nidx=null]
Meekocerataceae
 - Meekocerataceae Waagen, 1895 [ACCEPTED SUPERFAMILY 272972:BSGVQ nidx=null]
 + Meekocerataceae [ACCEPTED SUPERFAMILY 276829:BWXNX nidx=null]
Meekoceratoidea
 - Meekoceratoidea Waagen, 1895 [ACCEPTED SUPERFAMILY 272972:BSFXL nidx=null]
 + Meekoceratoidea [ACCEPTED SUPERFAMILY 276829:BV9LZ nidx=null]
Meekophiceras
 - Meekophiceras Tozer, 1994 [ACCEPTED GENUS 272972:BSKSS nidx=null]
 + Meekophiceras [ACCEPTED GENUS 276829:C2QQ3 nidx=null]
Megaceratites
 - Megaceratites Balini, 1992 [ACCEPTED GENUS 272972:BSKST nidx=null]
 + Megaceratites [ACCEPTED GENUS 276829:C2QQY nidx=null]
Megacrioceras
 - Megacrioceras Delanoy et al., 1987 [ACCEPTED GENUS 272972:BSKSV nidx=null]
 + Megacrioceras [ACCEPTED GENUS 276829:C2QRM nidx=null]
Megacrioceratidae
 - Megacrioceratidae Vermeulen, 2006 [ACCEPTED FAMILY 272972:BSH5J nidx=null]
 + Megacrioceratidae [ACCEPTED FAMILY 276829:BX3Z2 nidx=null]
Megalytoceras
 - Megalytoceras Buckman, 1905 [ACCEPTED GENUS 272972:BSKT2 nidx=null]
 + Megalytoceras [ACCEPTED GENUS 276829:C2QZZ nidx=null]
Megaphyllitaceae
 - Megaphyllitaceae Mojsisovics, 1896 [ACCEPTED SUPERFAMILY 272972:BSGVR nidx=null]
 + Megaphyllitaceae [ACCEPTED SUPERFAMILY 276829:BWXNZ nidx=null]
Megaphyllites
 - Megaphyllites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSKT3 nidx=null]
 + Megaphyllites [ACCEPTED GENUS 276829:C2R2W nidx=null]
Megaphyllitidae
 - Megaphyllitidae Mojsisovics, 1896 [ACCEPTED FAMILY 272972:BSH5K nidx=null]
 + Megaphyllitidae [ACCEPTED FAMILY 276829:BX3ZL nidx=null]
Megapronorites
 - Megapronorites Ruzhencev, 1949 [ACCEPTED GENUS 272972:BSKT4 nidx=null]
 + Megapronorites [ACCEPTED GENUS 276829:C2R3D nidx=null]
Megateuthididae
 - Megateuthididae Sachs & Nalnjaeva, 1967 [ACCEPTED FAMILY 272972:BSH5L nidx=null]
 + Megateuthididae [ACCEPTED FAMILY 276829:BX3ZR nidx=null]
Meginoceras
 - Meginoceras (McLearn, 1930) [ACCEPTED GENUS 272972:BSKT6 nidx=null]
 + Meginoceras [ACCEPTED GENUS 276829:C2R86 nidx=null]
Meitianoceras
 - Meitianoceras Zheng, 1984 [ACCEPTED GENUS 272972:BSKTC nidx=null]
 + Meitianoceras [ACCEPTED GENUS 276829:C2RDR nidx=null]
Meixianites
 - Meixianites Xu, 1977 [ACCEPTED GENUS 272972:BSKTD nidx=null]
 + Meixianites [ACCEPTED GENUS 276829:C2RDW nidx=null]
Melagathiceras
 - Melagathiceras Tozer, 1971 [ACCEPTED GENUS 272972:BSKTK nidx=null]
 + Melagathiceras [ACCEPTED GENUS 276829:C2RGW nidx=null]
Melagathiceratidae
 - Melagathiceratidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSH5M nidx=null]
 + Melagathiceratidae [ACCEPTED FAMILY 276829:BX3ZZ nidx=null]
Melchiorites
 - Melchiorites Spath, 1923 [ACCEPTED GENUS 272972:BSKTL nidx=null]
 + Melchiorites [ACCEPTED GENUS 276829:C2RQY nidx=null]
Melonites
 - Melonites Bogoslovsky, 1971 [ACCEPTED GENUS 272972:BSVYX nidx=null]
 + Melonites Lamarck, 1812 [SYNONYM GENUS 276829:CT9WB nidx=null parent=B8XTY]
 + Melonites Lamarck, 1812 [PROVISIONALLY_ACCEPTED GENUS 276829:CT9WC nidx=null]
Melvilloceras
 - Melvilloceras Nassichuk, 1975 [ACCEPTED GENUS 272972:BSKTS nidx=null]
 + Melvilloceras [ACCEPTED GENUS 276829:C2RWS nidx=null]
Menabites
 - Menabites Collignon, 1948 [ACCEPTED GENUS 272972:BSKTW nidx=null]
 + Menabites [ACCEPTED GENUS 276829:C2RYV nidx=null]
 + Menabites [ACCEPTED SUBGENUS 276829:C2RYW nidx=null]
Meneghinia
 - Meneghinia Vecchia, 1949 [SYNONYM GENUS 272972:BSVYY nidx=null parent=BSHS2]
 + Meneghinia O. Silvestri, 1889 [PROVISIONALLY_ACCEPTED GENUS 276829:CT9WR nidx=null]
 + Meneghinia O. Silvestri, 1889 [SYNONYM GENUS 276829:CT9WS nidx=null parent=87FGX]
Menjaites
 - Menjaites Sazonova, 1971 [ACCEPTED GENUS 272972:BSKTY nidx=null]
 + Menjaites [ACCEPTED GENUS 276829:C2S4R nidx=null]
 + Menjaites [ACCEPTED SUBGENUS 276829:C2S4S nidx=null]
Menneroceras
 - Menneroceras Andrianov, 1985 [ACCEPTED GENUS 272972:BSKV2 nidx=null]
 + Menneroceras [ACCEPTED GENUS 276829:C2S53 nidx=null]
Menuites
 - Menuites Spath, 1922 [ACCEPTED GENUS 272972:BSKV3 nidx=null]
 + Menuites [ACCEPTED GENUS 276829:C2S5W nidx=null]
Menuthiocrioceras
 - Menuthiocrioceras (Collignon, 1949) [SYNONYM GENUS 272972:BSN3P nidx=null parent=BSN3Q]
 + Menuthiocrioceras [ACCEPTED SUBGENUS 276829:C5Z54 nidx=null]
Meragoniatites
 - Meragoniatites Korn, 2001 [ACCEPTED GENUS 272972:BSKV4 nidx=null]
 + Meragoniatites [ACCEPTED GENUS 276829:C2S6N nidx=null]
Meridiceras
 - Meridiceras Hillebrandt, 2006 [ACCEPTED GENUS 272972:BSKV5 nidx=null]
 + Meridiceras [ACCEPTED GENUS 276829:C2S7K nidx=null]
Merocanites
 - Merocanites (Schindewolf, 1922) [ACCEPTED GENUS 272972:BSKV6 nidx=null]
 + Merocanites [ACCEPTED GENUS 276829:C2SDJ nidx=null]
Meropella
 - Meropella (Renz & Renz, 1948) [SYNONYM GENUS 272972:BSN3V nidx=null parent=BSN3W]
 + Meropella [ACCEPTED SUBGENUS 276829:C5Z5B nidx=null]
Meropharciceras
 - Meropharciceras Becker & House, 1993 [ACCEPTED GENUS 272972:BSKV9 nidx=null]
 + Meropharciceras [ACCEPTED GENUS 276829:C2SGV nidx=null]
Merzougites
 - Merzougites Klug, 2002 [ACCEPTED GENUS 272972:BSKVB nidx=null]
 + Merzougites [ACCEPTED GENUS 276829:C2SK9 nidx=null]
Mescalites
 - Mescalites Furnish & Glenister, 1971 [ACCEPTED GENUS 272972:BSKVD nidx=null]
 + Mescalites [ACCEPTED GENUS 276829:C2SQC nidx=null]
Mesobeloceras
 - Mesobeloceras Glenister, 1958 [ACCEPTED GENUS 272972:BSKVF nidx=null]
 + Mesobeloceras [ACCEPTED GENUS 276829:C2SSF nidx=null]
Mesocladiscites
 - Mesocladiscites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSKVG nidx=null]
 + Mesocladiscites [ACCEPTED GENUS 276829:C2SV2 nidx=null]
Mesohedenstroemia
 - Mesohedenstroemia Chao, 1959 [ACCEPTED GENUS 272972:BSKVH nidx=null]
 + Mesohedenstroemia [ACCEPTED GENUS 276829:C2SXH nidx=null]
Mesohimavatites
 - Mesohimavatites Tozer, 1994 [ACCEPTED GENUS 272972:BSKVJ nidx=null]
 + Mesohimavatites [ACCEPTED GENUS 276829:C2SXJ nidx=null]
Mesopuzosia
 - Mesopuzosia Matsumoto, 1954 [ACCEPTED GENUS 272972:BSKVP nidx=null]
 + Mesopuzosia [ACCEPTED GENUS 276829:C2T3P nidx=null]
Metabactrites
 - Metabactrites Bogoslovsky, 1972 [ACCEPTED GENUS 272972:BSKVR nidx=null]
 + Metabactrites [ACCEPTED GENUS 276829:C2T6Y nidx=null]
Metacarnites
 - Metacarnites Diener, 1908 [ACCEPTED GENUS 272972:BSKVS nidx=null]
 + Metacarnites [ACCEPTED GENUS 276829:C2T8W nidx=null]
Metaclionites
 - Metaclionites Tozer, 1994 [ACCEPTED GENUS 272972:BSKW2 nidx=null]
 + Metaclionites [ACCEPTED GENUS 276829:C2T9V nidx=null]
Metadagnoceras
 - Metadagnoceras Tozer, 1965 [ACCEPTED GENUS 272972:BSKW3 nidx=null]
 + Metadagnoceras [ACCEPTED GENUS 276829:C2TC7 nidx=null]
Metaderoceras
 - Metaderoceras Spath, 1925 [ACCEPTED GENUS 272972:BSKW4 nidx=null]
 + Metaderoceras [ACCEPTED GENUS 276829:C2TC9 nidx=null]
Metadimorphoceras
 - Metadimorphoceras Moore, 1958 [ACCEPTED GENUS 272972:BSKW5 nidx=null]
 + Metadimorphoceras [ACCEPTED GENUS 276829:C2TCJ nidx=null]
Metadinarites
 - Metadinarites Spath, 1951 [ACCEPTED GENUS 272972:BSKW6 nidx=null]
 + Metadinarites [ACCEPTED GENUS 276829:C2TCK nidx=null]
Metahaploceras
 - Metahaploceras Spath, 1925 [ACCEPTED GENUS 272972:BSN3Y nidx=null]
 + Metahaploceras [ACCEPTED SUBGENUS 276829:C5Z68 nidx=null]
Metahedenstroemia
 - Metahedenstroemia Spath, 1934 [ACCEPTED GENUS 272972:BSKW8 nidx=null]
 + Metahedenstroemia [ACCEPTED GENUS 276829:C2TDC nidx=null]
Metalegoceras
 - Metalegoceras Schindewolf, 1931 [ACCEPTED GENUS 272972:BSKW9 nidx=null]
 + Metalegoceras [ACCEPTED GENUS 276829:C2TDK nidx=null]
 + Metalegoceras [ACCEPTED SUBGENUS 276829:C2TDL nidx=null]
Metalegoceratidae
 - Metalegoceratidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSH5N nidx=null]
 + Metalegoceratidae [ACCEPTED FAMILY 276829:BX44T nidx=null]
Metaperrinites
 - Metaperrinites Ruzhencev, 1950 [ACCEPTED GENUS 272972:BSKWC nidx=null]
 + Metaperrinites [ACCEPTED GENUS 276829:C2TFP nidx=null]
Metaplacenticeras
 - Metaplacenticeras Spath, 1926 [ACCEPTED GENUS 272972:BSKWD nidx=null]
 + Metaplacenticeras [ACCEPTED GENUS 276829:C2TG9 nidx=null]
Metapronorites
 - Metapronorites Librovitch, 1938 [ACCEPTED GENUS 272972:BSKWF nidx=null]
 + Metapronorites [ACCEPTED GENUS 276829:C2TH3 nidx=null]
Metasibirites
 - Metasibirites (Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSKWG nidx=null]
 + Metasibirites [ACCEPTED GENUS 276829:C2TJK nidx=null]
Metasibiritidae
 - Metasibiritidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH5P nidx=null]
 + Metasibiritidae [ACCEPTED FAMILY 276829:BX44Z nidx=null]
Metasigaloceras
 - Metasigaloceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSKWJ nidx=null]
 + Metasigaloceras [ACCEPTED GENUS 276829:C2TJL nidx=null]
Metathisbites
 - Metathisbites Tozer, 1994 [ACCEPTED GENUS 272972:BSKWK nidx=null]
 + Metathisbites [ACCEPTED GENUS 276829:C2TKF nidx=null]
Metatirolites
 - Metatirolites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSKWL nidx=null]
 + Metatirolites [ACCEPTED GENUS 276829:C2TKH nidx=null]
Metaxya
 - Metaxya Mulsant & Rey, 1875 [SYNONYM GENUS 272972:BML99 nidx=null parent=9JK6T]
 + Metaxya Mulsant & Rey, 1873 [SYNONYM GENUS 276829:C2TKR nidx=null parent=9JK6T]
 + Metaxya Mulsant & Rey, 1874 [SYNONYM GENUS 276829:C2TKS nidx=null parent=9JK6T]
 + Metaxya Mulsant & Rey, 1875 [SYNONYM GENUS 276829:C2TKT nidx=null parent=9JK6T]
Metengonoceras
 - Metengonoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSKWR nidx=null]
 + Metengonoceras [ACCEPTED GENUS 276829:C2TLN nidx=null]
Metoicoceras
 - Metoicoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSKWS nidx=null]
 + Metoicoceras [ACCEPTED GENUS 276829:C2TPC nidx=null]
Metophiceras
 - Metophiceras (Spath, 1935) [ACCEPTED GENUS 272972:BSKWV nidx=null]
 + Metophiceras [ACCEPTED GENUS 276829:C2TPY nidx=null]
Metopolophium (Metopolophium) fasciatum
 - Metopolophium (Metopolophium) fasciatum [ACCEPTED SPECIES 272972:BSVGM nidx=null]
 + Metopolophium (Metopolophium) fasciatum [ACCEPTED SPECIES 276829:CQZLZ nidx=null]
Metopolophium (Metopolophium) sabihae
 - Metopolophium (Metopolophium) sabihae [ACCEPTED SPECIES 272972:BSTR2 nidx=null]
 + Metopolophium (Metopolophium) sabihae [ACCEPTED SPECIES 276829:CNXT2 nidx=null]
Metussuria
 - Metussuria Spath, 1934 [ACCEPTED GENUS 272972:BSKWY nidx=null]
 + Metussuria [ACCEPTED GENUS 276829:C2TTF nidx=null]
Mexicanoceras
 - Mexicanoceras Imlay, 1938 [ACCEPTED GENUS 272972:BSKWZ nidx=null]
 + Mexicanoceras [ACCEPTED GENUS 276829:C2TTP nidx=null]
Mexicoceras
 - Mexicoceras Ruzhencev, 1955 [ACCEPTED GENUS 272972:BSKX2 nidx=null]
 + Mexicoceras [ACCEPTED GENUS 276829:C2TV2 nidx=null]
Mianwaliites
 - Mianwaliites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSKX4 nidx=null]
 + Mianwaliites [ACCEPTED GENUS 276829:C2TXC nidx=null]
Microbajocisphinctes
 - Microbajocisphinctes Fernandez-Lopez, 1985 [ACCEPTED GENUS 272972:BSKX5 nidx=null]
 + Microbajocisphinctes [ACCEPTED GENUS 276829:C2V3S nidx=null]
Microceras
 - Microceras Hyatt, 1867 [SYNONYM GENUS 272972:BSVZ2 nidx=null parent=62G5Y]
 + Microceras F. Sandberger, 1886 [SYNONYM GENUS 276829:CTBGN nidx=null parent=C4HNJ]
 + Microceras Hall, 1845 [SYNONYM GENUS 276829:CTBGP nidx=null parent=BYP5R]
Microderoceras
 - Microderoceras Hyatt, 1871 [ACCEPTED GENUS 272972:BSKX8 nidx=null]
 + Microderoceras [ACCEPTED GENUS 276829:C2V8B nidx=null]
Microsulcatoceras
 - Microsulcatoceras Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSKXJ nidx=null]
 + Microsulcatoceras [ACCEPTED GENUS 276829:C2W38 nidx=null]
Microtropites
 - Microtropites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSKXM nidx=null]
 + Microtropites [ACCEPTED GENUS 276829:C2W4Q nidx=null]
Miklukhoceras
 - Miklukhoceras Pavlov, 1967 [ACCEPTED GENUS 272972:BSKXR nidx=null]
 + Miklukhoceras [ACCEPTED GENUS 276829:C2W9D nidx=null]
Miltites
 - Miltites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSKXS nidx=null]
 + Miltites [ACCEPTED GENUS 276829:C2WFP nidx=null]
Miltoceras
 - Miltoceras Wiedenmayer, 1980 [ACCEPTED GENUS 272972:BSKXT nidx=null]
 + Miltoceras [ACCEPTED GENUS 276829:C2WFQ nidx=null]
Mimagoniatitaceae
 - Mimagoniatitaceae Miller, 1938 [ACCEPTED SUPERFAMILY 272972:BSGVS nidx=null]
 + Mimagoniatitaceae [ACCEPTED SUPERFAMILY 276829:BWXP5 nidx=null]
Mimagoniatites
 - Mimagoniatites Eichenberg, 1930 [ACCEPTED GENUS 272972:BSKXV nidx=null]
 + Mimagoniatites [ACCEPTED GENUS 276829:C2WFW nidx=null]
Mimagoniatitidae
 - Mimagoniatitidae Miller, 1938 [ACCEPTED FAMILY 272972:BSH5R nidx=null]
 + Mimagoniatitidae [ACCEPTED FAMILY 276829:BX46S nidx=null]
Mimanarcestes
 - Mimanarcestes Bogoslovsky, 1969 [ACCEPTED GENUS 272972:BSKXW nidx=null]
 + Mimanarcestes [ACCEPTED GENUS 276829:C2WG2 nidx=null]
Mimimitoceras
 - Mimimitoceras Korn, 1988 [ACCEPTED GENUS 272972:BSKXX nidx=null]
 + Mimimitoceras [ACCEPTED GENUS 276829:C2WGZ nidx=null]
Mimoceratidae
 - Mimoceratidae Steinmann, 1890 [ACCEPTED FAMILY 272972:BSH5S nidx=null]
 + Mimoceratidae [ACCEPTED FAMILY 276829:BX46V nidx=null]
Mimosphinctaceae
 - Mimosphinctaceae Erben, 1953 [ACCEPTED SUPERFAMILY 272972:BSGVT nidx=null]
 + Mimosphinctaceae [ACCEPTED SUPERFAMILY 276829:BWXP8 nidx=null]
Mimosphinctes
 - Mimosphinctes Eichenberg, 1931 [ACCEPTED GENUS 272972:BSKY3 nidx=null]
 + Mimosphinctes [ACCEPTED GENUS 276829:C2WHY nidx=null]
Mimosphinctidae
 - Mimosphinctidae Erben, 1953 [ACCEPTED FAMILY 272972:BSH5T nidx=null]
 + Mimosphinctidae [ACCEPTED FAMILY 276829:BX46X nidx=null]
Mimotornoceras
 - Mimotornoceras Klug, 2002 [ACCEPTED GENUS 272972:BSKY4 nidx=null]
 + Mimotornoceras [ACCEPTED GENUS 276829:C2WJ2 nidx=null]
Minersvillites
 - Minersvillites Brayard et al., 2013 [ACCEPTED GENUS 272972:BSKY5 nidx=null]
 + Minersvillites [ACCEPTED GENUS 276829:C2WJY nidx=null]
Mingyuexiaceras
 - Mingyuexiaceras Zhao et al., 1978 [SYNONYM GENUS 272972:BSKY6 nidx=null parent=BSMKD]
 + Mingyuexiaceras [ACCEPTED GENUS 276829:C2WK7 nidx=null]
Mirapelia
 - Mirapelia (Cooper, 1982) [SYNONYM GENUS 272972:BSN42 nidx=null parent=BSN43]
 + Mirapelia [ACCEPTED SUBGENUS 276829:C5Z7W nidx=null]
Mirilentia
 - Mirilentia Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSKY7 nidx=null]
 + Mirilentia [ACCEPTED GENUS 276829:C2WVJ nidx=null]
Mithraxites
 - Mithraxites Becker & House, 1994 [ACCEPTED GENUS 272972:BSKY8 nidx=null]
 + Mithraxites [ACCEPTED GENUS 276829:C2WZM nidx=null]
Mitonia
 - Mitonia Renz & Alvarez, 1979 [ACCEPTED GENUS 272972:BSKY9 nidx=null]
 + Mitonia [ACCEPTED GENUS 276829:C2X24 nidx=null]
Mixomanticoceras
 - Mixomanticoceras Becker et al., 1993 [ACCEPTED GENUS 272972:BSKYB nidx=null]
 + Mixomanticoceras [ACCEPTED GENUS 276829:C2X3X nidx=null]
Mnesarchaeidae
 - Mnesarchaeidae Eyer, 1924 [ACCEPTED FAMILY 272972:B6N5Y nidx=null]
 + Mnesarchaeidae Eyer, 1924 [ACCEPTED FAMILY 276829:DFGPS nidx=null]
Modicogryllus (Modicogryllus) algirius
 - Modicogryllus (Modicogryllus) algirius (Saussure, 1877) [ACCEPTED SPECIES 272972:BSTWH nidx=null]
 + Modicogryllus (Modicogryllus) algirius (Saussure, 1877) [ACCEPTED SPECIES 276829:CPB8G nidx=null]
Moffitites
 - Moffitites Imlay, 1959 [ACCEPTED GENUS 272972:BSKYD nidx=null]
 + Moffitites [ACCEPTED GENUS 276829:C2X8F nidx=null]
Mogharaeceras
 - Mogharaeceras Breistroffer, 1940 [ACCEPTED GENUS 272972:BSKYF nidx=null]
 + Mogharaeceras [ACCEPTED GENUS 276829:C2X8H nidx=null]
Mojsisoviczia
 - Mojsisoviczia Steinmann, 1881 [ACCEPTED GENUS 272972:BSKYG nidx=null]
 + Mojsisoviczia [ACCEPTED GENUS 276829:C2X9L nidx=null]
Mojsvarites
 - Mojsvarites (Pompeckj, 1895) [ACCEPTED GENUS 272972:BSKYH nidx=null]
 + Mojsvarites [ACCEPTED GENUS 276829:C2X9M nidx=null]
Monacanthites
 - Monacanthites Tozer, 1965 [ACCEPTED GENUS 272972:BSKYN nidx=null]
 + Monacanthites [ACCEPTED GENUS 276829:C2XCW nidx=null]
Mongoloceras
 - Mongoloceras Ruzhencev, 1960 [ACCEPTED GENUS 272972:BSKYQ nidx=null]
 + Mongoloceras [ACCEPTED GENUS 276829:C2XGT nidx=null]
Mongoloceratidae
 - Mongoloceratidae Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED FAMILY 272972:BSH5V nidx=null]
 + Mongoloceratidae [ACCEPTED FAMILY 276829:BX488 nidx=null]
Monneticeras
 - Monneticeras Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSKYR nidx=null]
 + Monneticeras [ACCEPTED GENUS 276829:C2XJ2 nidx=null]
Monophyllites
 - Monophyllites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSKYT nidx=null]
 + Monophyllites [ACCEPTED GENUS 276829:C2XNV nidx=null]
Monsalveiceras
 - Monsalveiceras Kakabadze & Hoedemaeker, 1997 [ACCEPTED GENUS 272972:BSKYV nidx=null]
 + Monsalveiceras [ACCEPTED GENUS 276829:C2XR6 nidx=null]
Montanesiceras
 - Montanesiceras Breskovski, 1977 [ACCEPTED GENUS 272972:BSKYW nidx=null]
 + Montanesiceras [ACCEPTED GENUS 276829:C2XRN nidx=null]
Moremanoceras
 - Moremanoceras (Cobban, 1972) [ACCEPTED GENUS 272972:BSKYY nidx=null]
 + Moremanoceras [ACCEPTED GENUS 276829:C2XX6 nidx=null]
Morewites
 - Morewites Shigeta, 2014 [ACCEPTED GENUS 272972:BSKZ2 nidx=null]
 + Morewites [ACCEPTED GENUS 276829:C2XXH nidx=null]
Morphoceratidae
 - Morphoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH5W nidx=null]
 + Morphoceratidae [ACCEPTED FAMILY 276829:BX49B nidx=null]
Morrisites
 - Morrisites Buckman, 1920 [SYNONYM GENUS 272972:BSVZC nidx=null parent=BT4YX]
 - Morrisites Van Hoepen, 1968 [SYNONYM GENUS 272972:BSVZD nidx=null parent=5VQP]
 + Morrisites Gibson, 1955 [SYNONYM GENUS 276829:CTC84 nidx=null parent=C2XZ9]
Morrowites
 - Morrowites Cobban & Hook, 1983 [ACCEPTED GENUS 272972:BSKZ3 nidx=null]
 + Morrowites [ACCEPTED GENUS 276829:C2XZJ nidx=null]
Mortoniceras
 - Mortoniceras Meek, 1876 [ACCEPTED GENUS 272972:BSKZ4 nidx=null]
 + Mortoniceras [ACCEPTED GENUS 276829:C2Y25 nidx=null]
 + Mortoniceras [ACCEPTED SUBGENUS 276829:C2Y26 nidx=null]
Mortoniceratoides
 - Mortoniceratoides Cooper, 1982 [ACCEPTED GENUS 272972:BSKZ6 nidx=null]
 + Mortoniceratoides [ACCEPTED GENUS 276829:C2Y27 nidx=null]
Mouydiria
 - Mouydiria Korn et al., 2010 [ACCEPTED GENUS 272972:BSKZ7 nidx=null]
 + Mouydiria [ACCEPTED GENUS 276829:C2Y4G nidx=null]
Mrhiliceras
 - Mrhiliceras Kennedy & Wright, 1985 [ACCEPTED GENUS 272972:BSKZ8 nidx=null]
 + Mrhiliceras [ACCEPTED GENUS 276829:C2Y4S nidx=null]
Mudiceras
 - Mudiceras Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSKZG nidx=null]
 + Mudiceras [ACCEPTED GENUS 276829:C2Y6G nidx=null]
Muensterites
 - Muensterites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSKZH nidx=null]
 + Muensterites [ACCEPTED GENUS 276829:C2Y6W nidx=null]
Muensteroceras
 - Muensteroceras (Hyatt, 1884) [ACCEPTED GENUS 272972:BSKZJ nidx=null]
 + Muensteroceras [ACCEPTED GENUS 276829:C2Y6X nidx=null]
Muensteroceratidae
 - Muensteroceratidae Librovitch, 1957 [ACCEPTED FAMILY 272972:BSH5Y nidx=null]
 + Muensteroceratidae [ACCEPTED FAMILY 276829:BX49Q nidx=null]
Muensteroceratoides
 - Muensteroceratoides Popov, 1965 [ACCEPTED GENUS 272972:BSKZM nidx=null]
 + Muensteroceratoides [ACCEPTED GENUS 276829:C2Y6Y nidx=null]
Muessenbiaergia
 - Muessenbiaergia (Korn & Price, 1987) [ACCEPTED GENUS 272972:BSKZN nidx=null]
 + Muessenbiaergia [ACCEPTED GENUS 276829:C2Y6Z nidx=null]
Mullericeras
 - Mullericeras Ware et al., 2011 [ACCEPTED GENUS 272972:BSKZR nidx=null]
 + Mullericeras [ACCEPTED GENUS 276829:C2Y7Z nidx=null]
Mullericeratidae
 - Mullericeratidae Ware et al., 2011 [ACCEPTED FAMILY 272972:BSH5Z nidx=null]
 + Mullericeratidae [ACCEPTED FAMILY 276829:BX49R nidx=null]
Mullerites
 - Mullerites Guex, 1980 [ACCEPTED GENUS 272972:BSKZS nidx=null]
 + Mullerites [ACCEPTED GENUS 276829:C2Y84 nidx=null]
Multisulcites
 - Multisulcites Liang, 1983 [ACCEPTED GENUS 272972:BSKZT nidx=null]
 + Multisulcites [ACCEPTED GENUS 276829:C2Y9N nidx=null]
Muniericeratidae
 - Muniericeratidae Wright, 1952 [ACCEPTED FAMILY 272972:BSH62 nidx=null]
 + Muniericeratidae [ACCEPTED FAMILY 276829:BX49Z nidx=null]
Murchisonia
 - Murchisonia Engel, 1896 [SYNONYM GENUS 272972:BSGNL nidx=null parent=5H77]
 + Murchisonia d'Archiac & Verneuil, 1841 [ACCEPTED GENUS 276829:BWNCC nidx=null]
Myloceras
 - Myloceras Whitehouse, 1926 [ACCEPTED GENUS 272972:BSKZY nidx=null]
 + Myloceras [ACCEPTED GENUS 276829:C2ZCT nidx=null]
Myoderma
 - Myoderma Burmeister, 1842 [SYNONYM GENUS 272972:63D4F nidx=null parent=5WDD]
 + Myoderma Dejean, 1836 [SYNONYM GENUS 276829:C2ZDV nidx=null parent=5WDD]
Myzocallis (Corylaphis) coryli
 - Myzocallis (Corylaphis) coryli (Goeze, 1778) [ACCEPTED SPECIES 272972:BSK6Y nidx=null]
 + Myzocallis (Corylaphis) coryli (Goeze, 1778) [ACCEPTED SPECIES 276829:BZV5H nidx=null]
Myzocallis (Lineomyzocallis) pepperi
 - Myzocallis (Lineomyzocallis) pepperi Boudreaux & Tissot, 1962 [ACCEPTED SPECIES 272972:45HNV nidx=null]
 + Myzocallis (Lineomyzocallis) pepperi Boudreaux & Tissot, 1962 [ACCEPTED SPECIES 276829:CS3NH nidx=null]
Myzocallis (Lineomyzocallis) spinosa
 - Myzocallis (Lineomyzocallis) spinosa Boudreaux & Tissot, 1962 [ACCEPTED SPECIES 272972:45HNW nidx=null]
 + Myzocallis (Lineomyzocallis) spinosa Boudreaux & Tissot, 1962 [ACCEPTED SPECIES 276829:CS3NN nidx=null]
Myzocallis (Tuberculoides) annulatus
 - Myzocallis (Tuberculoides) annulatus (Hartig, 1841) [SYNONYM SPECIES 272972:45HPY nidx=null parent=59JBV]
 + Myzocallis (Tuberculoides) annulatus (Hartig, 1841) [SYNONYM SPECIES 276829:CSMZP nidx=null parent=59JBV]
Myzus (Myzus) godetiae
 - Myzus (Myzus) godetiae [ACCEPTED SPECIES 272972:6RT88 nidx=null]
 + Myzus (Myzus) godetiae [ACCEPTED SPECIES 276829:CS3VB nidx=null]
Myzus (Myzus) polygoniyonai
 - Myzus (Myzus) polygoniyonai [ACCEPTED SPECIES 272972:9HJWT nidx=null]
 + Myzus (Myzus) polygoniyonai [ACCEPTED SPECIES 276829:CSN8C nidx=null]
Mzerrebites
 - Mzerrebites Becker & House, 1994 [ACCEPTED GENUS 272972:BSL22 nidx=null]
 + Mzerrebites [ACCEPTED GENUS 276829:C2ZRP nidx=null]
Nairites
 - Nairites Kiparisova & Azarian, 1963 [ACCEPTED GENUS 272972:BSL23 nidx=null]
 + Nairites [ACCEPTED GENUS 276829:C2ZW4 nidx=null]
Nammalites
 - Nammalites Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSL24 nidx=null]
 + Nammalites [ACCEPTED GENUS 276829:C2ZZ2 nidx=null]
Nanningites
 - Nanningites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSL25 nidx=null]
 + Nanningites [ACCEPTED GENUS 276829:C322R nidx=null]
Nannometoicoceras
 - Nannometoicoceras Kennedy, 1988 [ACCEPTED GENUS 272972:BSL26 nidx=null]
 + Nannometoicoceras [ACCEPTED GENUS 276829:C323T nidx=null]
Nannosteinmannites
 - Nannosteinmannites Tatzreiter, 1985 [ACCEPTED GENUS 272972:BSL27 nidx=null]
 + Nannosteinmannites [ACCEPTED GENUS 276829:C324J nidx=null]
Nannovascoceras
 - Nannovascoceras Renz & Alvarez, 1979 [SYNONYM GENUS 272972:BSL28 nidx=null parent=BSMSR]
 + Nannovascoceras [ACCEPTED GENUS 276829:C324P nidx=null]
Naplesites
 - Naplesites Yatskov, 1990 [ACCEPTED GENUS 272972:BSL29 nidx=null]
 + Naplesites [ACCEPTED GENUS 276829:C326J nidx=null]
Naramoceras
 - Naramoceras McNamara, 1985 [ACCEPTED GENUS 272972:BSL2B nidx=null]
 + Naramoceras [ACCEPTED GENUS 276829:C326R nidx=null]
Nassichukites
 - Nassichukites Tozer, 1979 [ACCEPTED GENUS 272972:BSL2C nidx=null]
 + Nassichukites [ACCEPTED GENUS 276829:C328B nidx=null]
Nathorstitaceae
 - Nathorstitaceae Spath, 1951 [ACCEPTED SUPERFAMILY 272972:BSGVV nidx=null]
 + Nathorstitaceae [ACCEPTED SUPERFAMILY 276829:BWXPN nidx=null]
Nathorstites
 - Nathorstites Boehm, 1903 [ACCEPTED GENUS 272972:BSL2D nidx=null]
 + Nathorstites [ACCEPTED GENUS 276829:C3299 nidx=null]
Nathorstitidae
 - Nathorstitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH63 nidx=null]
 + Nathorstitidae [ACCEPTED FAMILY 276829:BX4DV nidx=null]
Ndumuiceras
 - Ndumuiceras Kennedy & Klinger, 2009 [ACCEPTED GENUS 272972:BSL2G nidx=null]
 + Ndumuiceras [ACCEPTED GENUS 276829:C32BW nidx=null]
Neancyloceras
 - Neancyloceras Spath, 1926 [ACCEPTED GENUS 272972:BSL2K nidx=null]
 + Neancyloceras [ACCEPTED GENUS 276829:C32D9 nidx=null]
Neaspidoceras
 - Neaspidoceras Spath, 1931 [ACCEPTED GENUS 272972:BSL2L nidx=null]
 + Neaspidoceras [ACCEPTED GENUS 276829:C32DZ nidx=null]
Nebraskites
 - Nebraskites Kennedy & Cobban, 1988 [ACCEPTED GENUS 272972:BSL2M nidx=null]
 + Nebraskites [ACCEPTED GENUS 276829:C32FG nidx=null]
Necrophorus anglicus
 - Necrophorus anglicus Stephens, 1830 [SYNONYM SPECIES 272972:BSVXJ nidx=null parent=9KJ39]
 + Necrophorus anglicus Stephens, 1829 [SYNONYM SPECIES 276829:CSWBF nidx=null parent=9KJ39]
 + Necrophorus anglicus Stephens, 1830 [SYNONYM SPECIES 276829:CSWBG nidx=null parent=9KJ39]
Nejdia
 - Nejdia Arkell, 1952 [ACCEPTED GENUS 272972:BSL2N nidx=null]
 + Nejdia [ACCEPTED GENUS 276829:C32L7 nidx=null]
Neoaganides
 - Neoaganides Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSL2Q nidx=null]
 + Neoaganides [ACCEPTED GENUS 276829:C332S nidx=null]
Neoaricoceras
 - Neoaricoceras (Ruzhentsev, 1950) [ACCEPTED GENUS 272972:BSL2R nidx=null]
 + Neoaricoceras [ACCEPTED GENUS 276829:C337L nidx=null]
Neoastieria
 - Neoastieria Egoian, 1969 [ACCEPTED GENUS 272972:BSL2T nidx=null]
 + Neoastieria [ACCEPTED GENUS 276829:C337Q nidx=null]
Neocampylites
 - Neocampylites Callomon, 1973 [ACCEPTED GENUS 272972:BSL34 nidx=null]
 + Neocampylites [ACCEPTED GENUS 276829:C33P5 nidx=null]
Neocladiscites
 - Neocladiscites Popov, 1961 [ACCEPTED GENUS 272972:BSL3B nidx=null]
 + Neocladiscites [ACCEPTED GENUS 276829:C346J nidx=null]
Neocomites
 - Neocomites Uhlig, 1905 [ACCEPTED GENUS 272972:BSL3C nidx=null]
 + Neocomites [ACCEPTED GENUS 276829:C34HT nidx=null]
 + Neocomites [ACCEPTED SUBGENUS 276829:C34HV nidx=null]
Neocomites jenkinsi
 - Neocomites jenkinsi (Anderson, 1933) [ACCEPTED SPECIES 272972:BSVY5 nidx=null]
 + Neocomites jenkinsi (Anderson, 1938) [SYNONYM SPECIES 276829:CT3KJ nidx=null parent=D7WYR]
Neocomitidae
 - Neocomitidae (Salfeld, 1921) [ACCEPTED FAMILY 272972:BSH64 nidx=null]
 + Neocomitidae [ACCEPTED FAMILY 276829:BX4FQ nidx=null]
Neocrimites
 - Neocrimites (Ruzhentsev, 1940) [ACCEPTED GENUS 272972:BSL3L nidx=null]
 + Neocrimites [ACCEPTED GENUS 276829:C34LX nidx=null]
Neodeshayesites
 - Neodeshayesites Casey, 1964 [ACCEPTED GENUS 272972:BSL3W nidx=null]
 + Neodeshayesites [ACCEPTED GENUS 276829:C34SM nidx=null]
Neodesmoceras
 - Neodesmoceras (Matsumoto, 1947) [SYNONYM GENUS 272972:BSN49 nidx=null parent=BSN4B]
 + Neodesmoceras [ACCEPTED SUBGENUS 276829:C5ZBX nidx=null]
Neodidymites
 - Neodidymites Tozer, 1994 [ACCEPTED GENUS 272972:BSL3Y nidx=null]
 + Neodidymites [ACCEPTED GENUS 276829:C34SZ nidx=null]
Neodimorphoceras
 - Neodimorphoceras Schmidt, 1925 [ACCEPTED GENUS 272972:BSL3Z nidx=null]
 + Neodimorphoceras [ACCEPTED GENUS 276829:C34T7 nidx=null]
Neodimorphocerataceae
 - Neodimorphocerataceae Furnish & Knapp, 1966 [ACCEPTED SUPERFAMILY 272972:BSGVW nidx=null]
 + Neodimorphocerataceae [ACCEPTED SUPERFAMILY 276829:BWXPV nidx=null]
Neodimorphoceratidae
 - Neodimorphoceratidae Furnish & Knapp, 1966 [ACCEPTED FAMILY 272972:BSH65 nidx=null]
 + Neodimorphoceratidae [ACCEPTED FAMILY 276829:BX4FT nidx=null]
Neogeoceras
 - Neogeoceras Ruzhencev, 1947 [ACCEPTED GENUS 272972:BSL42 nidx=null]
 + Neogeoceras [ACCEPTED GENUS 276829:C3597 nidx=null]
Neoglaphyrites
 - Neoglaphyrites Ruzhencev, 1938 [ACCEPTED GENUS 272972:BSL43 nidx=null]
 + Neoglaphyrites [ACCEPTED GENUS 276829:C359J nidx=null]
Neoglassoceras
 - Neoglassoceras Kotlyar et al., 2004 [ACCEPTED GENUS 272972:BSL44 nidx=null]
 + Neoglassoceras [ACCEPTED GENUS 276829:C359M nidx=null]
Neoglyphioceras
 - Neoglyphioceras (Brüning, 1923) [ACCEPTED GENUS 272972:BSL45 nidx=null]
 + Neoglyphioceras [ACCEPTED GENUS 276829:C359X nidx=null]
Neoglyphiocerataceae
 - Neoglyphiocerataceae Plummer & Scott, 1937 [ACCEPTED SUPERFAMILY 272972:BSGVX nidx=null]
 + Neoglyphiocerataceae [ACCEPTED SUPERFAMILY 276829:BWXPX nidx=null]
Neoglyphioceratidae
 - Neoglyphioceratidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSH66 nidx=null]
 + Neoglyphioceratidae [ACCEPTED FAMILY 276829:BX4FZ nidx=null]
Neogoniatites
 - Neogoniatites Ruzhencev & Bogoslovskaya, 1970 [ACCEPTED GENUS 272972:BSL48 nidx=null]
 + Neogoniatites [ACCEPTED GENUS 276829:C35B7 nidx=null]
Neograhamites
 - Neograhamites Spath, 1953 [ACCEPTED GENUS 272972:BSL49 nidx=null]
 + Neograhamites [ACCEPTED GENUS 276829:C35BJ nidx=null]
Neohimavatites
 - Neohimavatites Tozer, 1980 [ACCEPTED GENUS 272972:BSL4B nidx=null]
 + Neohimavatites [ACCEPTED GENUS 276829:C35GP nidx=null]
Neohoploceras
 - Neohoploceras Spath, 1939 [ACCEPTED GENUS 272972:BSL4C nidx=null]
 + Neohoploceras [ACCEPTED GENUS 276829:C35H3 nidx=null]
Neoicoceras
 - Neoicoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSL4D nidx=null]
 + Neoicoceras [ACCEPTED GENUS 276829:C35HT nidx=null]
Neoicocerataceae
 - Neoicocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGVY nidx=null]
 + Neoicocerataceae [ACCEPTED SUPERFAMILY 276829:BWXPY nidx=null]
Neoicoceratidae
 - Neoicoceratidae (Hyatt, 1900) [ACCEPTED FAMILY 272972:BSH67 nidx=null]
 + Neoicoceratidae [ACCEPTED FAMILY 276829:BX4G3 nidx=null]
Neokentroceras
 - Neokentroceras Spath, 1921 [ACCEPTED GENUS 272972:BSL4F nidx=null]
 + Neokentroceras [ACCEPTED GENUS 276829:C35K5 nidx=null]
Neoleymeriella
 - Neoleymeriella (Saveliev, 1973) [SYNONYM GENUS 272972:BSN4C nidx=null parent=BSN4D]
 + Neoleymeriella [ACCEPTED SUBGENUS 276829:C5ZC4 nidx=null]
Neolissoceras
 - Neolissoceras (Spath, 1923) [ACCEPTED GENUS 272972:BSL4L nidx=null]
 + Neolissoceras [ACCEPTED GENUS 276829:C35MZ nidx=null]
Neolobites
 - Neolobites Fisher, 1882 [ACCEPTED GENUS 272972:BSL4P nidx=null]
 + Neolobites [ACCEPTED GENUS 276829:C35N2 nidx=null]
Neomanticoceras
 - Neomanticoceras Schindewolf, 1936 [ACCEPTED GENUS 272972:BSL4Q nidx=null]
 + Neomanticoceras [ACCEPTED GENUS 276829:C35PC nidx=null]
Neoparoniceras
 - Neoparoniceras Rulleau et al., 2003 [SYNONYM GENUS 272972:BSN4G nidx=null parent=BSGJF]
 + Neoparoniceras [ACCEPTED SUBGENUS 276829:C5ZC9 nidx=null]
Neopericyclus
 - Neopericyclus Popov, 1965 [ACCEPTED GENUS 272972:BSL4S nidx=null]
 + Neopericyclus [ACCEPTED GENUS 276829:C362T nidx=null]
Neopharciceras
 - Neopharciceras Bogoslovsky, 1955 [ACCEPTED GENUS 272972:BSL4T nidx=null]
 + Neopharciceras [ACCEPTED GENUS 276829:C3639 nidx=null]
Neophlycticeras
 - Neophlycticeras Spath, 1922 [ACCEPTED GENUS 272972:BSL4V nidx=null]
 + Neophlycticeras [ACCEPTED GENUS 276829:C363L nidx=null]
 + Neophlycticeras [ACCEPTED SUBGENUS 276829:C363M nidx=null]
Neophyllites
 - Neophyllites Lange, 1941 [ACCEPTED GENUS 272972:BSL4X nidx=null]
 + Neophyllites [ACCEPTED GENUS 276829:C3649 nidx=null]
Neophylloceras
 - Neophylloceras (Shimizu, 1934) [ACCEPTED GENUS 272972:BSL4Y nidx=null]
 + Neophylloceras [ACCEPTED GENUS 276829:C364C nidx=null]
Neopopanoceras
 - Neopopanoceras Spath, 1951 [SYNONYM GENUS 272972:BSL54 nidx=null parent=BT4DH]
 - Neopopanoceras Schindewolf, 1939 [ACCEPTED GENUS 272972:BSL55 nidx=null]
 + Neopopanoceras [ACCEPTED GENUS 276829:C366N nidx=null]
Neoprionoceras
 - Neoprionoceras Spath, 1928 [ACCEPTED GENUS 272972:BSL56 nidx=null]
 + Neoprionoceras [ACCEPTED GENUS 276829:C3672 nidx=null]
Neopronorites
 - Neopronorites Ruzhencev, 1936 [ACCEPTED GENUS 272972:BSL57 nidx=null]
 + Neopronorites [ACCEPTED GENUS 276829:C367D nidx=null]
Neoprotrachyceras
 - Neoprotrachyceras Krystyn, 1978 [ACCEPTED GENUS 272972:BSL58 nidx=null]
 + Neoprotrachyceras [ACCEPTED GENUS 276829:C367K nidx=null]
Neoprotrachyceras attila
 - Neoprotrachyceras attila (Mojsisovics, 1870) [SYNONYM SPECIES 272972:BSVYS nidx=null parent=BSZG6]
 + Neoprotrachyceras attila (Mojsisovics, 1893) [ACCEPTED SPECIES 276829:CT877 nidx=null]
Neoptychites
 - Neoptychites Kossmat, 1895 [ACCEPTED GENUS 272972:BSL59 nidx=null]
 + Neoptychites [ACCEPTED GENUS 276829:C3684 nidx=null]
Neopuzosia
 - Neopuzosia Matsumoto, 1954 [ACCEPTED GENUS 272972:BSL5C nidx=null]
 + Neopuzosia [ACCEPTED GENUS 276829:C368F nidx=null]
Neoshumardites
 - Neoshumardites Ruzhencev, 1936 [ACCEPTED GENUS 272972:BSL5D nidx=null]
 + Neoshumardites [ACCEPTED GENUS 276829:C36G4 nidx=null]
Neosirenites
 - Neosirenites Popov, 1961 [ACCEPTED GENUS 272972:BSL5F nidx=null]
 + Neosirenites [ACCEPTED GENUS 276829:C36GT nidx=null]
Neostacheoceratidae
 - Neostacheoceratidae Toumansky, 1939 [SYNONYM FAMILY 272972:BSH68 nidx=null parent=BSFY8]
 + Neostacheoceratidae [ACCEPTED FAMILY 276829:BX4GD nidx=null]
Neostlingoceras
 - Neostlingoceras Klinger & Kennedy, 1978 [ACCEPTED GENUS 272972:BSL5G nidx=null]
 + Neostlingoceras [ACCEPTED GENUS 276829:C36KN nidx=null]
Neotenoceras
 - Neotenoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSL5H nidx=null]
 + Neotenoceras [ACCEPTED GENUS 276829:C36M9 nidx=null]
Neotibetites
 - Neotibetites (Krumbeck, 1913) [ACCEPTED GENUS 272972:BSL5J nidx=null]
 + Neotibetites [ACCEPTED GENUS 276829:C36NX nidx=null]
Neouddenites
 - Neouddenites Ruzhencev, 1961 [ACCEPTED GENUS 272972:BSL5M nidx=null]
 + Neouddenites [ACCEPTED GENUS 276829:C36RX nidx=null]
Nevadaphyllites
 - Nevadaphyllites Guex, 1980 [ACCEPTED GENUS 272972:BSL5Q nidx=null]
 + Nevadaphyllites [ACCEPTED GENUS 276829:C37P8 nidx=null]
Nevadisculites
 - Nevadisculites Bucher, 1988 [ACCEPTED GENUS 272972:BSL5R nidx=null]
 + Nevadisculites [ACCEPTED GENUS 276829:C37PS nidx=null]
Nevadites
 - Nevadites Smith, 1914 [ACCEPTED GENUS 272972:BSL5S nidx=null]
 + Nevadites [ACCEPTED GENUS 276829:C37PW nidx=null]
Nevadoceras
 - Nevadoceras Schiappa & et al., 1995 [ACCEPTED GENUS 272972:BSL5T nidx=null]
 + Nevadoceras [ACCEPTED GENUS 276829:C37PY nidx=null]
Newellites
 - Newellites Furnish & Glenister, 1969 [ACCEPTED GENUS 272972:BSL5V nidx=null]
 + Newellites [ACCEPTED GENUS 276829:C37QC nidx=null]
Newmarracarroceras
 - Newmarracarroceras Hall, 1989 [ACCEPTED GENUS 272972:BSL5W nidx=null]
 + Newmarracarroceras [ACCEPTED GENUS 276829:C37QJ nidx=null]
Niceforoceras
 - Niceforoceras Basse, 1948 [ACCEPTED GENUS 272972:BSL5X nidx=null]
 + Niceforoceras [ACCEPTED GENUS 276829:C37TN nidx=null]
Nicholsites
 - Nicholsites Bucher, 1992 [ACCEPTED GENUS 272972:BSL62 nidx=null]
 + Nicholsites [ACCEPTED GENUS 276829:C37VK nidx=null]
Nicimitoceras
 - Nicimitoceras Bockwinkel & Ebbighausen, 2006 [ACCEPTED GENUS 272972:BSL63 nidx=null]
 + Nicimitoceras [ACCEPTED GENUS 276829:C37VS nidx=null]
Nicklesia
 - Nicklesia Hyatt, 1903 [ACCEPTED GENUS 272972:BSL64 nidx=null]
 + Nicklesia [ACCEPTED GENUS 276829:C37W3 nidx=null]
Nicomedites
 - Nicomedites Toula, 1896 [ACCEPTED GENUS 272972:BSL65 nidx=null]
 + Nicomedites [ACCEPTED GENUS 276829:C37X4 nidx=null]
Nielsenoceras
 - Nielsenoceras Furnish, 1966 [ACCEPTED GENUS 272972:BSL66 nidx=null]
 + Nielsenoceras [ACCEPTED GENUS 276829:C37YG nidx=null]
Nigericeras
 - Nigericeras Schneegans, 1943 [ACCEPTED GENUS 272972:BSL67 nidx=null]
 + Nigericeras [ACCEPTED GENUS 276829:C37ZJ nidx=null]
Nigidius auriculatus
 - Nigidius auriculatus (Guérin-Méneville, 1833) [ACCEPTED SPECIES 272972:73XVW nidx=null]
 + Nigidius auriculatus Klug, 1835 [AMBIGUOUS_SYNONYM SPECIES 276829:CTJYY nidx=null parent=7XHBP]
 + Nigidius auriculatus (Gory, 1833) [ACCEPTED SPECIES 276829:CTJYZ nidx=null]
Nikitinoceras
 - Nikitinoceras Sokolov, 1913 [ACCEPTED GENUS 272972:BSL68 nidx=null]
 + Nikitinoceras [ACCEPTED GENUS 276829:C388P nidx=null]
 + Nikitinoceras [ACCEPTED SUBGENUS 276829:C388Q nidx=null]
Nipponoteuthidae
 - Nipponoteuthidae Iba et al., 2014 [ACCEPTED FAMILY 272972:BSH69 nidx=null]
 + Nipponoteuthidae [ACCEPTED FAMILY 276829:BX4HP nidx=null]
Nipponoteuthis
 - Nipponoteuthis Iba et al., 2014 [ACCEPTED GENUS 272972:BSL6C nidx=null]
 + Nipponoteuthis [ACCEPTED GENUS 276829:C38QH nidx=null]
Nitanoceras
 - Nitanoceras McLearn, 1937 [ACCEPTED GENUS 272972:BSL6D nidx=null]
 + Nitanoceras [ACCEPTED GENUS 276829:C38XT nidx=null]
Nodicoeloceras
 - Nodicoeloceras Buckman, 1926 [ACCEPTED GENUS 272972:BSL6F nidx=null]
 + Nodicoeloceras [ACCEPTED GENUS 276829:C394F nidx=null]
Nodogastrioceras
 - Nodogastrioceras Ma & Li, 1998 [ACCEPTED GENUS 272972:BSL6G nidx=null]
 + Nodogastrioceras [ACCEPTED GENUS 276829:C396B nidx=null]
Nodopericyclus
 - Nodopericyclus Korn et al., 2010 [ACCEPTED GENUS 272972:BSL6H nidx=null]
 + Nodopericyclus [ACCEPTED GENUS 276829:C396R nidx=null]
Nodosageceras
 - Nodosageceras Ruzhencev, 1956 [ACCEPTED GENUS 272972:BSL6J nidx=null]
 + Nodosageceras [ACCEPTED GENUS 276829:C3983 nidx=null]
Nodosoclymenia
 - Nodosoclymenia Czarnocki, 1989 [ACCEPTED GENUS 272972:BSL6K nidx=null]
 + Nodosoclymenia [ACCEPTED GENUS 276829:C398D nidx=null]
Nodotibetites
 - Nodotibetites Zhao & Wang, 1973 [ACCEPTED GENUS 272972:BSL6L nidx=null]
 + Nodotibetites [ACCEPTED GENUS 276829:C398J nidx=null]
Nomismoceras
 - Nomismoceras Foord & Crick, 1897 [ACCEPTED GENUS 272972:BSL6P nidx=null]
 + Nomismoceras [ACCEPTED GENUS 276829:C39CT nidx=null]
Nomismocerataceae
 - Nomismocerataceae Librovitch, 1957 [ACCEPTED SUPERFAMILY 272972:BSGVZ nidx=null]
 + Nomismocerataceae [ACCEPTED SUPERFAMILY 276829:BWXQR nidx=null]
Nomismoceratidae
 - Nomismoceratidae Librovitch, 1957 [ACCEPTED FAMILY 272972:BSH6B nidx=null]
 + Nomismoceratidae [ACCEPTED FAMILY 276829:BX4HX nidx=null]
Nordiceras
 - Nordiceras Bogoslovsky, 1955 [ACCEPTED GENUS 272972:BSL6S nidx=null]
 + Nordiceras [ACCEPTED GENUS 276829:C39JQ nidx=null]
Nordiceratidae
 - Nordiceratidae Korn, 2002 [ACCEPTED FAMILY 272972:BSH6C nidx=null]
 + Nordiceratidae [ACCEPTED FAMILY 276829:BX4HZ nidx=null]
Nordophiceras
 - Nordophiceras Popov, 1961 [ACCEPTED GENUS 272972:BSL6T nidx=null]
 + Nordophiceras [ACCEPTED GENUS 276829:C39JV nidx=null]
Nordophiceratidae
 - Nordophiceratidae Popov, 1961 [ACCEPTED FAMILY 272972:BSH6D nidx=null]
 + Nordophiceratidae [ACCEPTED FAMILY 276829:BX4J4 nidx=null]
Nordophiceratoides
 - Nordophiceratoides Guex et al., 2005 [ACCEPTED GENUS 272972:BSL6V nidx=null]
 + Nordophiceratoides [ACCEPTED GENUS 276829:C39JW nidx=null]
Noridiscitidae
 - Noridiscitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH6F nidx=null]
 + Noridiscitidae [ACCEPTED FAMILY 276829:BX4J5 nidx=null]
Noritaceae
 - Noritaceae Karpinsky, 1889 [ACCEPTED SUPERFAMILY 272972:BSGW2 nidx=null]
 + Noritaceae [ACCEPTED SUPERFAMILY 276829:BWXQT nidx=null]
Norites
 - Norites Mojsisovics, 1869 [ACCEPTED GENUS 272972:BSL6W nidx=null]
 + Norites [ACCEPTED GENUS 276829:C39KX nidx=null]
Noritidae
 - Noritidae Karpinsky, 1889 [ACCEPTED FAMILY 272972:BSH6G nidx=null]
 + Noritidae [ACCEPTED FAMILY 276829:BX4J6 nidx=null]
Noritidea
 - Noritidea Karpinsky, 1889 [ACCEPTED FAMILY 272972:BSH6H nidx=null]
 + Noritidea [ACCEPTED FAMILY 276829:BX4J7 nidx=null]
Norosirenites
 - Norosirenites Tozer, 1994 [ACCEPTED GENUS 272972:BSL6X nidx=null]
 + Norosirenites [ACCEPTED GENUS 276829:C39LX nidx=null]
Nostoceras
 - Nostoceras Hyatt, 1894 [ACCEPTED GENUS 272972:BSL6Y nidx=null]
 + Nostoceras [ACCEPTED GENUS 276829:C39P9 nidx=null]
 + Nostoceras [ACCEPTED SUBGENUS 276829:C39PB nidx=null]
Nostoceratidae
 - Nostoceratidae (Hyatt, 1894) [ACCEPTED FAMILY 272972:BSH6J nidx=null]
 + Nostoceratidae [ACCEPTED FAMILY 276829:BX4JC nidx=null]
Notonia
 - Notonia DC. [SYNONYM UNRANKED 272972:7NBC5 nidx=null parent=58HD]
 + Notonia DC. [SYNONYM UNRANKED 276829:BWPCC nidx=null parent=58HD]
Notostreptites
 - Notostreptites Henderson, 1990 [ACCEPTED GENUS 272972:BSL76 nidx=null]
 + Notostreptites [ACCEPTED GENUS 276829:C3BN3 nidx=null]
Nuculoceras
 - Nuculoceras Bisat, 1924 [ACCEPTED GENUS 272972:BSL77 nidx=null]
 + Nuculoceras [ACCEPTED GENUS 276829:C3BXG nidx=null]
Nuetzelia
 - Nuetzelia Brühwiler et al., 2012 [ACCEPTED GENUS 272972:BSL78 nidx=null]
 + Nuetzelia [ACCEPTED GENUS 276829:C3BYR nidx=null]
Nummoceras
 - Nummoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSL79 nidx=null]
 + Nummoceras [ACCEPTED GENUS 276829:C3C38 nidx=null]
Nyalamites
 - Nyalamites Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSL7B nidx=null]
 + Nyalamites [ACCEPTED GENUS 276829:C3C4Q nidx=null]
Odontolkites
 - Odontolkites Buckman, 1925 [SYNONYM GENUS 272972:BSL7D nidx=null parent=BSJXD]
 + Odontolkites [ACCEPTED GENUS 276829:C3DDV nidx=null]
Oecoptychiidae
 - Oecoptychiidae Arkell, 1957 [ACCEPTED FAMILY 272972:BSH6K nidx=null]
 + Oecoptychiidae [ACCEPTED FAMILY 276829:BX4M4 nidx=null]
Oecotraustes
 - Oecotraustes (Waagen, 1869) [ACCEPTED GENUS 272972:BSL7K nidx=null]
 + Oecotraustes [ACCEPTED GENUS 276829:C3DJ7 nidx=null]
Oenetes
 - Oenetes Herrich-Schäffer, 1855 [SYNONYM GENUS 272972:BSF23 nidx=null parent=93N7V]
 + Oenetes Oke, 1953 [SYNONYM GENUS 276829:95LJR nidx=null parent=93N7V]
Oenetus
 - Oenetus Herrich-Schäffer, 1855 [SYNONYM GENUS 272972:BSFD6 nidx=null parent=93N7V]
 + Oenetus Kirby, 1892 [SYNONYM GENUS 276829:95LJS nidx=null parent=93N7V]
Oiophyllites
 - Oiophyllites Spath, 1953 [ACCEPTED GENUS 272972:BSL7N nidx=null]
 + Oiophyllites [ACCEPTED GENUS 276829:C3DPX nidx=null]
Oiospermum
 - Oiospermum Less. [SYNONYM UNRANKED 272972:5TDQH nidx=null parent=3K75]
 + Oiospermum Less. [SYNONYM UNRANKED 276829:C7FK3 nidx=null parent=3K75]
Ojinagiceras
 - Ojinagiceras Cobban & Kennedy, 1989 [ACCEPTED GENUS 272972:BSFZG nidx=null]
 + Ojinagiceras [ACCEPTED GENUS 276829:BVC8R nidx=null]
Okhototrachyceras
 - Okhototrachyceras Konstantinov, 2012 [ACCEPTED GENUS 272972:BSL7P nidx=null]
 + Okhototrachyceras [ACCEPTED GENUS 276829:C3DQQ nidx=null]
Olcostephanidae
 - Olcostephanidae Haug, 1910 [ACCEPTED FAMILY 272972:BSH6L nidx=null]
 + Olcostephanidae [ACCEPTED FAMILY 276829:BX4MN nidx=null]
Olcostephanus
 - Olcostephanus (Neumayr, 1875) [ACCEPTED GENUS 272972:BSL7Q nidx=null]
 + Olcostephanus [ACCEPTED GENUS 276829:C3DRB nidx=null]
 + Olcostephanus [ACCEPTED SUBGENUS 276829:C3DRC nidx=null]
Olenikites
 - Olenikites Hyatt, 1900 [ACCEPTED GENUS 272972:BSL7V nidx=null]
 + Olenikites [ACCEPTED GENUS 276829:C3DS4 nidx=null]
Oloriziceras
 - Oloriziceras Tavera-Benitez, 1985 [ACCEPTED GENUS 272972:BSL7W nidx=null]
 + Oloriziceras [ACCEPTED GENUS 276829:C3DZC nidx=null]
Omanites
 - Omanites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSL7X nidx=null]
 + Omanites [ACCEPTED GENUS 276829:C3F46 nidx=null]
Omojuvavites
 - Omojuvavites Tozer, 1994 [ACCEPTED GENUS 272972:BSL7Y nidx=null]
 + Omojuvavites [ACCEPTED GENUS 276829:C3F6F nidx=null]
Onchoptera
 - Onchoptera Walker, 1856 [SYNONYM GENUS 272972:9B99W nidx=null parent=92H8B]
 + Onchoptera Birket-Smith, 1974 [SYNONYM GENUS 276829:95LKM nidx=null parent=92H8B]
Onitshoceras
 - Onitshoceras Reyment, 1954 [ACCEPTED GENUS 272972:BSL83 nidx=null]
 + Onitshoceras [ACCEPTED GENUS 276829:C3FDC nidx=null]
Onychoceras
 - Onychoceras Wunstrorf, 1905 [ACCEPTED GENUS 272972:BSL84 nidx=null]
 + Onychoceras [ACCEPTED GENUS 276829:C3FFN nidx=null]
Oosterella
 - Oosterella Kilian, 1911 [ACCEPTED GENUS 272972:BSL86 nidx=null]
 + Oosterella [ACCEPTED GENUS 276829:C3FHZ nidx=null]
Oosterellidae
 - Oosterellidae Kilian, 1911 [ACCEPTED FAMILY 272972:BSH6M nidx=null]
 + Oosterellidae [ACCEPTED FAMILY 276829:BX4P3 nidx=null]
Ophiceras
 - Ophiceras Griesbach, 1880 [ACCEPTED GENUS 272972:BSL8B nidx=null]
 + Ophiceras [ACCEPTED GENUS 276829:C3FNJ nidx=null]
Ophiceratidae
 - Ophiceratidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSH6N nidx=null]
 + Ophiceratidae [ACCEPTED FAMILY 276829:BX4P6 nidx=null]
Ophilyroceras
 - Ophilyroceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSL8C nidx=null]
 + Ophilyroceras [ACCEPTED GENUS 276829:C3FNY nidx=null]
Ophiorhabdoceras
 - Ophiorhabdoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSL8D nidx=null]
 + Ophiorhabdoceras [ACCEPTED GENUS 276829:C3FW8 nidx=null]
Oplatocera (Epioplatocera) oberthuri
 - Oplatocera (Epioplatocera) oberthuri [AMBIGUOUS_SYNONYM SPECIES 272972:BSVCY nidx=null parent=6T4C4]
 + Oplatocera (Epioplatocera) oberthuri [AMBIGUOUS_SYNONYM SPECIES 276829:CQQYV nidx=null parent=6T4C4]
Oppeliidae
 - Oppeliidae Bonarelli, 1894 [ACCEPTED FAMILY 272972:BSH6P nidx=null]
 + Oppeliidae [ACCEPTED FAMILY 276829:BX4QK nidx=null]
Orbignyceras
 - Orbignyceras Gerard & Contaut, 1936 [ACCEPTED GENUS 272972:BSL8K nidx=null]
 + Orbignyceras [ACCEPTED GENUS 276829:C3GJW nidx=null]
Orbignyiceras
 - Orbignyiceras Royo & Gomez, 1945 [ACCEPTED GENUS 272972:BSL8L nidx=null]
 + Orbignyiceras [ACCEPTED GENUS 276829:C3GK4 nidx=null]
Orbulites
 - Orbulites Lamarck, 1801 [SYNONYM GENUS 272972:BSL8M nidx=null parent=NY]
 + Orbulites Lamarck, 1816 [PROVISIONALLY_ACCEPTED GENUS 276829:C3GLC nidx=null]
Orthoceltites
 - Orthoceltites Spath, 1951 [ACCEPTED GENUS 272972:BSL8N nidx=null]
 + Orthoceltites [ACCEPTED GENUS 276829:C3HHW nidx=null]
Orthosphinctes
 - Orthosphinctes Schindewolf, 1925 [ACCEPTED GENUS 272972:BSL8P nidx=null]
 + Orthosphinctes [ACCEPTED GENUS 276829:C3HN3 nidx=null]
Osperleioceras
 - Osperleioceras Krimholtz & Tazikhin, 1957 [ACCEPTED GENUS 272972:BSL8S nidx=null]
 + Osperleioceras [ACCEPTED GENUS 276829:C3HXR nidx=null]
 + Osperleioceras [ACCEPTED SUBGENUS 276829:C3HXS nidx=null]
Osperlioceras
 - Osperlioceras Krimholtz & Tazikhin, 1957 [ACCEPTED GENUS 272972:BSL8V nidx=null]
 + Osperlioceras [ACCEPTED GENUS 276829:C3HXT nidx=null]
Ostlingoceras
 - Ostlingoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSL8W nidx=null]
 + Ostlingoceras [ACCEPTED GENUS 276829:C3J2S nidx=null]
 + Ostlingoceras [ACCEPTED SUBGENUS 276829:C3J2T nidx=null]
Otiorhynchus vranensis
 - Otiorhynchus vranensis Apfelbeck, 1895 [SYNONYM SPECIES 272972:B7VDF nidx=null parent=373HP]
 + Otiorhynchus vranensis Apfelbeck, 1894 [SYNONYM SPECIES 276829:D4Z67 nidx=null parent=373HP]
 + Otiorhynchus vranensis Apfelbeck, 1895 [SYNONYM SPECIES 276829:D4Z68 nidx=null parent=373HP]
Otoarpadites
 - Otoarpadites Tozer, 1994 [ACCEPTED GENUS 272972:BSL8Y nidx=null]
 + Otoarpadites [ACCEPTED GENUS 276829:C3J8F nidx=null]
Otoceras
 - Otoceras (Griesbach, 1880) [ACCEPTED GENUS 272972:BSL8Z nidx=null]
 + Otoceras [ACCEPTED GENUS 276829:C3J92 nidx=null]
Otocerataceae
 - Otocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGW3 nidx=null]
 + Otocerataceae [ACCEPTED SUPERFAMILY 276829:BWXRZ nidx=null]
Otoceratidae
 - Otoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH6Q nidx=null]
 + Otoceratidae [ACCEPTED FAMILY 276829:BX4SW nidx=null]
Otohoplites
 - Otohoplites Steinmann, 1925 [ACCEPTED GENUS 272972:BSL95 nidx=null]
 + Otohoplites [ACCEPTED GENUS 276829:C3JBD nidx=null]
Otoitidae
 - Otoitidae Mascke, 1907 [ACCEPTED FAMILY 272972:BSH6R nidx=null]
 + Otoitidae [ACCEPTED FAMILY 276829:BX4TH nidx=null]
Otoscaphites
 - Otoscaphites (Wright, 1953) [SYNONYM GENUS 272972:BSL96 nidx=null parent=89V7]
 + Otoscaphites [ACCEPTED GENUS 276829:C3JFG nidx=null]
 + Otoscaphites [ACCEPTED SUBGENUS 276829:C3JFH nidx=null]
Otosphinctes
 - Otosphinctes (Buckman, 1926) [SYNONYM GENUS 272972:BSN4Q nidx=null parent=BSN4R]
 + Otosphinctes [ACCEPTED SUBGENUS 276829:C5ZPG nidx=null]
Ouaoufilalites
 - Ouaoufilalites Korn et al., 2003 [ACCEPTED GENUS 272972:BSL99 nidx=null]
 + Ouaoufilalites [ACCEPTED GENUS 276829:C3JGN nidx=null]
Owenites
 - Owenites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSL9F nidx=null]
 + Owenites [ACCEPTED GENUS 276829:C3JKD nidx=null]
Owenoceras
 - Owenoceras Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSL9G nidx=null]
 + Owenoceras [ACCEPTED GENUS 276829:C3JKF nidx=null]
Oxya agavisa
 - Oxya agavisa Tsai, 1931 [ACCEPTED SPECIES 272972:4BC6Z nidx=null]
 + Oxya agavisa Tsai, 1931 [ACCEPTED SPECIES 276829:DFGQ5 nidx=null]
Oxyarietites
 - Oxyarietites Dommergues & Goolaerts, 2012 [ACCEPTED GENUS 272972:BSL9H nidx=null]
 + Oxyarietites [ACCEPTED GENUS 276829:C3JLD nidx=null]
Oxybeloceras
 - Oxybeloceras (Hyatt, 1900) [ACCEPTED GENUS 272972:BSL9J nidx=null]
 + Oxybeloceras [ACCEPTED GENUS 276829:C3JLF nidx=null]
Oxycanus byrsa
 - Oxycanus byrsa (Pfitzner, 1914) [ACCEPTED SPECIES 272972:4BD33 nidx=null]
 + Oxycanus byrsa (Pfitzner, 1933) [ACCEPTED SPECIES 276829:C262V nidx=null]
Oxycanus dirempta
 - Oxycanus dirempta (Walker, 1856) [ACCEPTED SPECIES 272972:4BD37 nidx=null]
 + Oxycanus dirempta (Walker, 1865) [ACCEPTED SPECIES 276829:C262Y nidx=null]
Oxydiscus
 - Oxydiscus Venturi & Nannarone, 2002 [SYNONYM GENUS 272972:BSMYW nidx=null parent=BSK9D]
 + Oxydiscus Koken, 1889 [SYNONYM GENUS 276829:C5XC4 nidx=null parent=CV76L]
Oxylongobardites
 - Oxylongobardites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSL9P nidx=null]
 + Oxylongobardites [ACCEPTED GENUS 276829:C3JMN nidx=null]
Oxynoticeras
 - Oxynoticeras (Hyatt, 1874) [ACCEPTED GENUS 272972:BSL9R nidx=null]
 + Oxynoticeras [ACCEPTED GENUS 276829:C3JMX nidx=null]
Oxynoticeratidae
 - Oxynoticeratidae Hyatt, 1875 [ACCEPTED FAMILY 272972:BSH6S nidx=null]
 + Oxynoticeratidae [ACCEPTED FAMILY 276829:BX4V9 nidx=null]
Oxynoticeroides
 - Oxynoticeroides Dommergues et al., 1986 [ACCEPTED GENUS 272972:BSL9V nidx=null]
 + Oxynoticeroides [ACCEPTED GENUS 276829:C3JMY nidx=null]
Oxytibetites
 - Oxytibetites Tozer, 1994 [ACCEPTED GENUS 272972:BSL9Y nidx=null]
 + Oxytibetites [ACCEPTED GENUS 276829:C3JQ3 nidx=null]
Oxytornoceras
 - Oxytornoceras Becker, 1993 [ACCEPTED GENUS 272972:BSL9Z nidx=null]
 + Oxytornoceras [ACCEPTED GENUS 276829:C3JQF nidx=null]
Oxytropidoceras
 - Oxytropidoceras Stieler, 1920 [ACCEPTED GENUS 272972:BSLB2 nidx=null]
 + Oxytropidoceras [ACCEPTED GENUS 276829:C3JQX nidx=null]
 + Oxytropidoceras [ACCEPTED SUBGENUS 276829:C3JQY nidx=null]
Oxyussuria
 - Oxyussuria Tozer, 1994 [ACCEPTED GENUS 272972:BSLB4 nidx=null]
 + Oxyussuria [ACCEPTED GENUS 276829:C3JR2 nidx=null]
Pachyceratidae
 - Pachyceratidae Buckman, 1918 [ACCEPTED FAMILY 272972:BSH6T nidx=null]
 + Pachyceratidae [ACCEPTED FAMILY 276829:BX4VS nidx=null]
Pachydesmoceras
 - Pachydesmoceras Spath, 1922 [ACCEPTED GENUS 272972:BSLBF nidx=null]
 + Pachydesmoceras [ACCEPTED GENUS 276829:C3K4S nidx=null]
Pachydiscidae
 - Pachydiscidae Spath, 1922 [ACCEPTED FAMILY 272972:9GKWP nidx=null]
 + Pachydiscidae [ACCEPTED FAMILY 276829:BV9WY nidx=null]
Pachydiscoceras
 - Pachydiscoceras Zhao & Liang, 1966 [ACCEPTED GENUS 272972:BSLBG nidx=null]
 + Pachydiscoceras [ACCEPTED GENUS 276829:C3K4Z nidx=null]
Pachydiscus
 - Pachydiscus Zittel, 1884 [ACCEPTED GENUS 272972:9GKZD nidx=null]
 + Pachydiscus [ACCEPTED GENUS 276829:BVCB9 nidx=null]
 + Pachydiscus [ACCEPTED SUBGENUS 276829:BVCBB nidx=null]
Pachydiscus fascicostatum
 - Pachydiscus fascicostatum [ACCEPTED SPECIES 272972:BSWGK nidx=null]
 + Pachydiscus fascicostatum Anderson, 1958 [ACCEPTED SPECIES 276829:CWCM4 nidx=null]
Pachylyroceras
 - Pachylyroceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSLBH nidx=null]
 + Pachylyroceras [ACCEPTED GENUS 276829:C3K6K nidx=null]
Pachyproptychites
 - Pachyproptychites Diener, 1916 [ACCEPTED GENUS 272972:BSLBN nidx=null]
 + Pachyproptychites [ACCEPTED GENUS 276829:C3K98 nidx=null]
Pachyrotoceras
 - Pachyrotoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSLBP nidx=null]
 + Pachyrotoceras [ACCEPTED GENUS 276829:C3K9L nidx=null]
Paedopronorites
 - Paedopronorites Glenister et al., 2004 [ACCEPTED GENUS 272972:BSLBQ nidx=null]
 + Paedopronorites [ACCEPTED GENUS 276829:C3KG5 nidx=null]
Palaeoechioceras
 - Palaeoechioceras Spath, 1929 [ACCEPTED GENUS 272972:BSLBS nidx=null]
 + Palaeoechioceras [ACCEPTED GENUS 276829:C3KKZ nidx=null]
Palaeogoniatites
 - Palaeogoniatites Hyatt, 1900 [ACCEPTED GENUS 272972:BSLBT nidx=null]
 + Palaeogoniatites [ACCEPTED GENUS 276829:C3KLC nidx=null]
Palaeokazachstanites
 - Palaeokazachstanites Zakharov, 1978 [ACCEPTED GENUS 272972:BSLBV nidx=null]
 + Palaeokazachstanites [ACCEPTED GENUS 276829:C3KLL nidx=null]
Palaeophyllites
 - Palaeophyllites (Welter, 1922) [ACCEPTED GENUS 272972:BSLBX nidx=null]
 + Palaeophyllites [ACCEPTED GENUS 276829:C3KMN nidx=null]
Palaeophyllitidae
 - Palaeophyllitidae Popov, 1958 [ACCEPTED FAMILY 272972:BSH6W nidx=null]
 + Palaeophyllitidae [ACCEPTED FAMILY 276829:BX4YG nidx=null]
Palermites
 - Palermites Toumansky, 1937 [ACCEPTED GENUS 272972:BSLBZ nidx=null]
 + Palermites [ACCEPTED GENUS 276829:C3KSY nidx=null]
Palermoceras
 - Palermoceras Zhou & Glenister, 2009 [ACCEPTED GENUS 272972:BSLC2 nidx=null]
 + Palermoceras [ACCEPTED GENUS 276829:C3KSZ nidx=null]
Palicites
 - Palicites Gemmellaro, 1904 [ACCEPTED GENUS 272972:BSLC3 nidx=null]
 + Palicites [ACCEPTED GENUS 276829:C3KT6 nidx=null]
Palpifer sexnotaius
 - Palpifer sexnotaius Moore, 1879 [SYNONYM SPECIES 272972:BSDRC nidx=null parent=75JTM]
 + Palpifer sexnotaius Pfitzner, 1912 [SYNONYM SPECIES 276829:97TDD nidx=null parent=75JTM]
Palpiphora
 - Palpiphora Hampson, 1893 [SYNONYM GENUS 272972:BSFBL nidx=null parent=92HQL]
 + Palpiphora Pagenstecher, 1909 [SYNONYM GENUS 276829:95LPP nidx=null parent=92HQL]
Palpiphorus
 - Palpiphorus Hampson, 1893 [SYNONYM GENUS 272972:BSDXZ nidx=null parent=92HQL]
 + Palpiphorus Quail, 1900 [SYNONYM GENUS 276829:95LPQ nidx=null parent=92HQL]
Paltechioceras
 - Paltechioceras Buckman, 1924 [ACCEPTED GENUS 272972:BSLC6 nidx=null]
 + Paltechioceras [ACCEPTED GENUS 276829:C3L2X nidx=null]
Pamirioceras
 - Pamirioceras Pavlov, 1967 [ACCEPTED GENUS 272972:BSLC7 nidx=null]
 + Pamirioceras [ACCEPTED GENUS 276829:C3L5S nidx=null]
Pamiritella
 - Pamiritella Toumansky, 1963 [ACCEPTED GENUS 272972:BSLC8 nidx=null]
 + Pamiritella [ACCEPTED GENUS 276829:C3L5W nidx=null]
Pamphagosirenites
 - Pamphagosirenites Popov, 1961 [ACCEPTED GENUS 272972:BSLC9 nidx=null]
 + Pamphagosirenites [ACCEPTED GENUS 276829:C3L7N nidx=null]
Paquiericeras
 - Paquiericeras Sayn, 1901 [ACCEPTED GENUS 272972:BSLCD nidx=null]
 + Paquiericeras [ACCEPTED GENUS 276829:C3LPD nidx=null]
 + Paquiericeras [ACCEPTED SUBGENUS 276829:C3LPF nidx=null]
Parabrancoceras
 - Parabrancoceras Breistroffer, 1951 [ACCEPTED GENUS 272972:BSLCG nidx=null]
 + Parabrancoceras [ACCEPTED GENUS 276829:C3LRH nidx=null]
Paracaloceras
 - Paracaloceras (Spath, 1923) [SYNONYM GENUS 272972:BSN4T nidx=null parent=BSN4V]
 + Paracaloceras [ACCEPTED SUBGENUS 276829:C5ZXS nidx=null]
Paracanthohoplites
 - Paracanthohoplites Stoyanow, 1949 [ACCEPTED GENUS 272972:BSLCK nidx=null]
 + Paracanthohoplites [ACCEPTED GENUS 276829:C3LT8 nidx=null]
Paraceltites
 - Paraceltites Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSLCL nidx=null]
 + Paraceltites [ACCEPTED GENUS 276829:C3LWN nidx=null]
Paraceltitidae
 - Paraceltitidae Spath, 1930 [ACCEPTED FAMILY 272972:BSH6Y nidx=null]
 + Paraceltitidae [ACCEPTED FAMILY 276829:BX52Z nidx=null]
Paraceltitoides
 - Paraceltitoides Zheng & Chen, 1979 [ACCEPTED GENUS 272972:BSLCM nidx=null]
 + Paraceltitoides [ACCEPTED GENUS 276829:C3LWP nidx=null]
Paraceratites
 - Paraceratites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSLCN nidx=null]
 + Paraceratites [ACCEPTED GENUS 276829:C3LX8 nidx=null]
Paraceratites trinodosus
 - Paraceratites trinodosus (von Mojsisovics, 1878) [SYNONYM SPECIES 272972:BSWK6 nidx=null parent=BSQPW]
 + Paraceratites trinodosus (Mojsisovics, 1882) [ACCEPTED SPECIES 276829:CWPPY nidx=null]
Parachondroceras
 - Parachondroceras Imlay, 1967 [ACCEPTED GENUS 272972:BSLCR nidx=null]
 + Parachondroceras [ACCEPTED GENUS 276829:C3LZ5 nidx=null]
Paracladiscites
 - Paracladiscites Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSLCS nidx=null]
 + Paracladiscites [ACCEPTED GENUS 276829:C3M2J nidx=null]
Paracochloceras
 - Paracochloceras (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSLCT nidx=null]
 + Paracochloceras [ACCEPTED GENUS 276829:C3M4M nidx=null]
Paracompsoceras
 - Paracompsoceras Cobban, 1972 [ACCEPTED GENUS 272972:BSLCX nidx=null]
 + Paracompsoceras [ACCEPTED GENUS 276829:C3M5Z nidx=null]
Paracostidiscus
 - Paracostidiscus Busnardo, 2003 [ACCEPTED GENUS 272972:BSLCY nidx=null]
 + Paracostidiscus [ACCEPTED GENUS 276829:C3M6W nidx=null]
Paracravenoceras
 - Paracravenoceras Gordon, 1960 [ACCEPTED GENUS 272972:BSLCZ nidx=null]
 + Paracravenoceras [ACCEPTED GENUS 276829:C3M7G nidx=null]
Paracrochordiceras
 - Paracrochordiceras (Spath, 1934) [ACCEPTED GENUS 272972:BSLD2 nidx=null]
 + Paracrochordiceras [ACCEPTED GENUS 276829:C3M7N nidx=null]
Paradanubites
 - Paradanubites Shevyrev, 1968 [ACCEPTED GENUS 272972:BSLDC nidx=null]
 + Paradanubites [ACCEPTED GENUS 276829:C3MFD nidx=null]
Paradimorphoceras
 - Paradimorphoceras Ruzhencev, 1947 [ACCEPTED GENUS 272972:BSLDD nidx=null]
 + Paradimorphoceras [ACCEPTED GENUS 276829:C3MM4 nidx=null]
Paradiscamphiceras
 - Paradiscamphiceras Taylor, 1988 [ACCEPTED GENUS 272972:BSLDG nidx=null]
 + Paradiscamphiceras [ACCEPTED GENUS 276829:C3MNH nidx=null]
Paradolphia
 - Paradolphia (Casey, 1965) [ACCEPTED GENUS 272972:BSLDH nidx=null]
 + Paradolphia [ACCEPTED GENUS 276829:C3MNV nidx=null]
Parafidelites
 - Parafidelites Klug, 2002 [ACCEPTED GENUS 272972:BSLDM nidx=null]
 + Parafidelites [ACCEPTED GENUS 276829:C3MYP nidx=null]
Parafrechites
 - Parafrechites Silberling & Nichols, 1982 [ACCEPTED GENUS 272972:BSLDN nidx=null]
 + Parafrechites [ACCEPTED GENUS 276829:C3MZL nidx=null]
Paraganides
 - Paraganides Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSLDQ nidx=null]
 + Paraganides [ACCEPTED GENUS 276829:C3N29 nidx=null]
Paragastrioceras
 - Paragastrioceras Tchernow, 1907 [ACCEPTED GENUS 272972:BSLDR nidx=null]
 + Paragastrioceras [ACCEPTED GENUS 276829:C3N2G nidx=null]
Paragastrioceratidae
 - Paragastrioceratidae Ruzhencev, 1951 [ACCEPTED FAMILY 272972:BSH6Z nidx=null]
 + Paragastrioceratidae [ACCEPTED FAMILY 276829:BX53G nidx=null]
Paragattendorfia
 - Paragattendorfia Schindewolf, 1924 [ACCEPTED GENUS 272972:BSLDS nidx=null]
 + Paragattendorfia [ACCEPTED GENUS 276829:C3N2H nidx=null]
Paragoceras
 - Paragoceras Arthaber, 1911 [ACCEPTED GENUS 272972:BSLDT nidx=null]
 + Paragoceras [ACCEPTED GENUS 276829:C3N4L nidx=null]
Paragoceratidae
 - Paragoceratidae Guex et al., 2010 [ACCEPTED FAMILY 272972:BSH72 nidx=null]
 + Paragoceratidae [ACCEPTED FAMILY 276829:BX53J nidx=null]
Paraguembelites
 - Paraguembelites Tozer, 1979 [ACCEPTED GENUS 272972:BSLDW nidx=null]
 + Paraguembelites [ACCEPTED GENUS 276829:C3N63 nidx=null]
Paragymnites
 - Paragymnites Hyatt, 1900 [ACCEPTED GENUS 272972:BSLDX nidx=null]
 + Paragymnites [ACCEPTED GENUS 276829:C3N6Z nidx=null]
Parahauerites
 - Parahauerites Diener, 1916 [ACCEPTED GENUS 272972:BSLDY nidx=null]
 + Parahauerites [ACCEPTED GENUS 276829:C3N9N nidx=null]
Parahedenstroemia
 - Parahedenstroemia Spath, 1934 [ACCEPTED GENUS 272972:BSLDZ nidx=null]
 + Parahedenstroemia [ACCEPTED GENUS 276829:C3NB8 nidx=null]
Parahomoceras
 - Parahomoceras Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSLF3 nidx=null]
 + Parahomoceras [ACCEPTED GENUS 276829:C3NH5 nidx=null]
Parahoplites
 - Parahoplites (Anthula, 1899) [ACCEPTED GENUS 272972:BSLF4 nidx=null]
 + Parahoplites [ACCEPTED GENUS 276829:C3NH6 nidx=null]
 + Parahoplites [ACCEPTED GENUS 276829:C3NH7 nidx=null]
Parahoplitidae
 - Parahoplitidae Spath, 1922 [ACCEPTED FAMILY 272972:BSH73 nidx=null]
 + Parahoplitidae [ACCEPTED FAMILY 276829:BX53M nidx=null]
Parahoplitoides
 - Parahoplitoides Spath, 1922 [ACCEPTED GENUS 272972:BSLF7 nidx=null]
 + Parahoplitoides [ACCEPTED GENUS 276829:C3NH9 nidx=null]
Parajaubertella
 - Parajaubertella Matsumoto, 1942 [ACCEPTED GENUS 272972:BSLF8 nidx=null]
 + Parajaubertella [ACCEPTED GENUS 276829:C3NL9 nidx=null]
Parajuvavites
 - Parajuvavites von Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSLF9 nidx=null]
 + Parajuvavites [ACCEPTED GENUS 276829:C3NLZ nidx=null]
Parakellnerites
 - Parakellnerites Rieber, 1973 [ACCEPTED GENUS 272972:BSLFB nidx=null]
 + Parakellnerites [ACCEPTED GENUS 276829:C3NMX nidx=null]
Parakymatites
 - Parakymatites Waagen, 1895 [ACCEPTED GENUS 272972:BSLFC nidx=null]
 + Parakymatites [ACCEPTED GENUS 276829:C3NQF nidx=null]
Paralegoceras
 - Paralegoceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSLFF nidx=null]
 + Paralegoceras [ACCEPTED GENUS 276829:C3NT3 nidx=null]
Paralobites
 - Paralobites (von Mojsisovics, 1902) [ACCEPTED GENUS 272972:BSN4Y nidx=null]
 + Paralobites [ACCEPTED SUBGENUS 276829:C623L nidx=null]
Paramammites
 - Paramammites (Furon, 1935) [ACCEPTED GENUS 272972:BSLFG nidx=null]
 + Paramammites [ACCEPTED GENUS 276829:C3P3F nidx=null]
Paramicroderoceras
 - Paramicroderoceras Dommergues et al., 1994 [ACCEPTED GENUS 272972:BSLFQ nidx=null]
 + Paramicroderoceras [ACCEPTED GENUS 276829:C3P63 nidx=null]
Paramollistephanus
 - Paramollistephanus Fernandez-Lopez & Pavia, 2015 [ACCEPTED GENUS 272972:BSLFS nidx=null]
 + Paramollistephanus [ACCEPTED GENUS 276829:C3P6R nidx=null]
Paranannites
 - Paranannites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSLFT nidx=null]
 + Paranannites [ACCEPTED GENUS 276829:C3P98 nidx=null]
Paranarcestes
 - Paranarcestes Chlupac & Turek, 1983 [ACCEPTED GENUS 272972:BSLFV nidx=null]
 + Paranarcestes [ACCEPTED GENUS 276829:C3P99 nidx=null]
Parancyloceras
 - Parancyloceras Spath, 1924 [ACCEPTED GENUS 272972:BSLFW nidx=null]
 + Parancyloceras [ACCEPTED GENUS 276829:C3P9X nidx=null]
Parandiceras
 - Parandiceras Spath, 1939 [ACCEPTED GENUS 272972:BSLFX nidx=null]
 + Parandiceras [ACCEPTED GENUS 276829:C3PB9 nidx=null]
Paranevadites
 - Paranevadites Tozer, 1994 [ACCEPTED GENUS 272972:BSLFY nidx=null]
 + Paranevadites [ACCEPTED GENUS 276829:C3PCB nidx=null]
Paranorites
 - Paranorites Waagen, 1895 [ACCEPTED GENUS 272972:BSLFZ nidx=null]
 + Paranorites [ACCEPTED GENUS 276829:C3PCW nidx=null]
Paranorites kulensis
 - Paranorites kulensis (Bychkov et al., 1976) [ACCEPTED SPECIES 272972:BSWM2 nidx=null]
 + Paranorites kulensis (Bytschkov, 1976) [SYNONYM SPECIES 276829:CWXP2 nidx=null parent=CDKNB]
Paranoritidae
 - Paranoritidae Spath, 1930 [ACCEPTED FAMILY 272972:BSH76 nidx=null]
 + Paranoritidae [ACCEPTED FAMILY 276829:BX54F nidx=null]
Parapedioceras
 - Parapedioceras Collignon, 1962 [ACCEPTED GENUS 272972:BSLG5 nidx=null]
 + Parapedioceras [ACCEPTED GENUS 276829:C3PKX nidx=null]
Paraphyllites
 - Paraphyllites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSLG6 nidx=null]
 + Paraphyllites [ACCEPTED GENUS 276829:C3PPS nidx=null]
Parapopanoceras
 - Parapopanoceras (Haug, 1894) [ACCEPTED GENUS 272972:BSLGB nidx=null]
 + Parapopanoceras [ACCEPTED GENUS 276829:C3PTV nidx=null]
Parapopanoceratidae
 - Parapopanoceratidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSH77 nidx=null]
 + Parapopanoceratidae [ACCEPTED FAMILY 276829:BX54Y nidx=null]
Parapronorites
 - Parapronorites Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSLGF nidx=null]
 + Parapronorites [ACCEPTED GENUS 276829:C3PWM nidx=null]
Parapuzosia
 - Parapuzosia (Nowak, 1913) [ACCEPTED GENUS 272972:9GVWQ nidx=null]
 + Parapuzosia [ACCEPTED GENUS 276829:C3PYC nidx=null]
 + Parapuzosia [ACCEPTED SUBGENUS 276829:C3PYD nidx=null]
Parareineckeia
 - Parareineckeia Imlay, 1962 [ACCEPTED GENUS 272972:BSLGK nidx=null]
 + Parareineckeia [ACCEPTED GENUS 276829:C3PZH nidx=null]
Parasageceras
 - Parasageceras Welter, 1915 [ACCEPTED GENUS 272972:BSLGL nidx=null]
 + Parasageceras [ACCEPTED GENUS 276829:C3Q57 nidx=null]
Parasaynoceras
 - Parasaynoceras Breistroffer, 1947 [ACCEPTED GENUS 272972:BSLGM nidx=null]
 + Parasaynoceras [ACCEPTED GENUS 276829:C3Q5H nidx=null]
Paraschartymites
 - Paraschartymites Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSLGN nidx=null]
 + Paraschartymites [ACCEPTED GENUS 276829:C3Q5P nidx=null]
Paraschistoceras
 - Paraschistoceras Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSLGP nidx=null]
 + Paraschistoceras [ACCEPTED GENUS 276829:C3Q5R nidx=null]
Parashumardites
 - Parashumardites Ruzhencev, 1939 [ACCEPTED GENUS 272972:BSLGQ nidx=null]
 + Parashumardites [ACCEPTED GENUS 276829:C3Q84 nidx=null]
Parashumarditidae
 - Parashumarditidae Boardman et al., 1994 [ACCEPTED FAMILY 272972:BSH78 nidx=null]
 + Parashumarditidae [ACCEPTED FAMILY 276829:BX55J nidx=null]
Parasiacyclus
 - Parasiacyclus Konovalova, 2015 [ACCEPTED GENUS 272972:BSLGR nidx=null]
 + Parasiacyclus [ACCEPTED GENUS 276829:C3Q86 nidx=null]
Parasibirites
 - Parasibirites Popov, 1962 [ACCEPTED GENUS 272972:BSLGS nidx=null]
 + Parasibirites [ACCEPTED GENUS 276829:C3Q87 nidx=null]
Parasibirites efimovae
 - Parasibirites efimovae Bychkov et al., 1976 [ACCEPTED SPECIES 272972:BSWMR nidx=null]
 + Parasibirites efimovae Bytschkov, 1976 [ACCEPTED SPECIES 276829:CWZR9 nidx=null]
Parasibirites grambergi
 - Parasibirites grambergi (Popov, 1961) [SYNONYM SPECIES 272972:BSWMS nidx=null parent=BSYPM]
 + Parasibirites grambergi (Popov, 1981) [ACCEPTED SPECIES 276829:CWZRB nidx=null]
Parasilesites
 - Parasilesites Imlay, 1959 [ACCEPTED GENUS 272972:BSLGT nidx=null]
 + Parasilesites [ACCEPTED GENUS 276829:C3Q8F nidx=null]
Paraspidites
 - Paraspidites Spath, 1934 [ACCEPTED GENUS 272972:BSLGV nidx=null]
 + Paraspidites [ACCEPTED GENUS 276829:C3QBS nidx=null]
Parasteroceras
 - Parasteroceras Dommergues et al., 1986 [ACCEPTED GENUS 272972:BSLGY nidx=null]
 + Parasteroceras [ACCEPTED GENUS 276829:C3QF8 nidx=null]
Parasturia
 - Parasturia Spath, 1951 [ACCEPTED GENUS 272972:BSLH5 nidx=null]
 + Parasturia [ACCEPTED GENUS 276829:C3QH6 nidx=null]
Parathetidites
 - Parathetidites Tozer, 1971 [ACCEPTED GENUS 272972:BSLH8 nidx=null]
 + Parathetidites [ACCEPTED GENUS 276829:C3QVP nidx=null]
Parathisbites
 - Parathisbites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSLH9 nidx=null]
 + Parathisbites [ACCEPTED GENUS 276829:C3QW3 nidx=null]
Parathisbitidae
 - Parathisbitidae Tozer, 1994 [ACCEPTED FAMILY 272972:BSH79 nidx=null]
 + Parathisbitidae [ACCEPTED FAMILY 276829:BX56J nidx=null]
Paratibetites
 - Paratibetites (von Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSLHD nidx=null]
 + Paratibetites [ACCEPTED GENUS 276829:C3QYX nidx=null]
Paratirolites
 - Paratirolites Stoyanow, 1910 [ACCEPTED GENUS 272972:BSLHL nidx=null]
 + Paratirolites [ACCEPTED GENUS 276829:C3QZZ nidx=null]
Paratongluceras
 - Paratongluceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSLHM nidx=null]
 + Paratongluceras [ACCEPTED GENUS 276829:C3R2F nidx=null]
Paratornoceras
 - Paratornoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSLHN nidx=null]
 + Paratornoceras [ACCEPTED GENUS 276829:C3R2Z nidx=null]
Paratrachyceras
 - Paratrachyceras (Arthaber, 1915) [ACCEPTED GENUS 272972:BSLHP nidx=null]
 + Paratrachyceras [ACCEPTED GENUS 276829:C3R33 nidx=null]
Paratropidoceras
 - Paratropidoceras Dommergues & Meister, 2004 [ACCEPTED GENUS 272972:BSLHR nidx=null]
 + Paratropidoceras [ACCEPTED GENUS 276829:C3R5G nidx=null]
Paratropites
 - Paratropites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSLHS nidx=null]
 + Paratropites [ACCEPTED GENUS 276829:C3R5Y nidx=null]
Paratumaroceras
 - Paratumaroceras Kutygin, 2003 [ACCEPTED GENUS 272972:BSLHW nidx=null]
 + Paratumaroceras [ACCEPTED GENUS 276829:C3R6G nidx=null]
Paraturrilites
 - Paraturrilites Breistroffer, 1947 [SYNONYM GENUS 272972:BSLHX nidx=null parent=BSKRW]
 + Paraturrilites [ACCEPTED GENUS 276829:C3R6J nidx=null]
Paraulacosphinctes
 - Paraulacosphinctes Schindewolf, 1925 [ACCEPTED GENUS 272972:BSLHY nidx=null]
 + Paraulacosphinctes [ACCEPTED GENUS 276829:C3R6T nidx=null]
Parawocklumeria
 - Parawocklumeria Schindewolf, 1926 [ACCEPTED GENUS 272972:BSLHZ nidx=null]
 + Parawocklumeria [ACCEPTED GENUS 276829:C3R9B nidx=null]
Parawocklumeriidae
 - Parawocklumeriidae Schindewolf, 1937 [ACCEPTED FAMILY 272972:BSH7B nidx=null]
 + Parawocklumeriidae [ACCEPTED FAMILY 276829:BX576 nidx=null]
Parengonoceras
 - Parengonoceras Spath, 1924 [ACCEPTED GENUS 272972:BSLJ3 nidx=null]
 + Parengonoceras [ACCEPTED GENUS 276829:C3RKD nidx=null]
Parentites
 - Parentites Bogoslovsky, 1961 [ACCEPTED GENUS 272972:BSLJ4 nidx=null]
 + Parentites [ACCEPTED GENUS 276829:C3RKN nidx=null]
Parisculites
 - Parisculites Tozer, 1994 [ACCEPTED GENUS 272972:BSLJ6 nidx=null]
 + Parisculites [ACCEPTED GENUS 276829:C3RPX nidx=null]
Parkinsoniidae
 - Parkinsoniidae Buckman, 1920 [ACCEPTED FAMILY 272972:BSH7C nidx=null]
 + Parkinsoniidae [ACCEPTED FAMILY 276829:BX57F nidx=null]
Parodiceras
 - Parodiceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSLJ7 nidx=null]
 - Parodiceras Wedekind, 1913 [SYNONYM GENUS 272972:BSLJ8 nidx=null parent=BSMTZ]
 + Parodiceras [ACCEPTED GENUS 276829:C3RSQ nidx=null]
Parodoceratidae
 - Parodoceratidae Petter, 1959 [ACCEPTED FAMILY 272972:BSH7D nidx=null]
 + Parodoceratidae [ACCEPTED FAMILY 276829:BX57L nidx=null]
Paroecotraustes
 - Paroecotraustes (Spath, 1928) [ACCEPTED GENUS 272972:BSN54 nidx=null]
 + Paroecotraustes [ACCEPTED SUBGENUS 276829:C6282 nidx=null]
Paroniceras
 - Paroniceras Bonarelli, 1893 [ACCEPTED GENUS 272972:BSLJ9 nidx=null]
 + Paroniceras [ACCEPTED GENUS 276829:C3RVB nidx=null]
Paroxycerites
 - Paroxycerites (Breistrofer, 1947) [SYNONYM GENUS 272972:BSN59 nidx=null parent=BSN5B]
 + Paroxycerites [ACCEPTED SUBGENUS 276829:C628F nidx=null]
Parrasiella
 - Parrasiella Frau et al., 2015 [ACCEPTED GENUS 272972:BSLJG nidx=null]
 + Parrasiella [ACCEPTED GENUS 276829:C3S2D nidx=null]
Parrasites
 - Parrasites Cantu-Chapa, 2009 [ACCEPTED GENUS 272972:BSLJH nidx=null]
 + Parrasites [ACCEPTED GENUS 276829:C3S2F nidx=null]
Partschiceras
 - Partschiceras (Fucini, 1920) [ACCEPTED GENUS 272972:BSLJK nidx=null]
 + Partschiceras [ACCEPTED GENUS 276829:C3S4F nidx=null]
Parussuria
 - Parussuria Spath, 1934 [ACCEPTED GENUS 272972:BSLJN nidx=null]
 + Parussuria [ACCEPTED GENUS 276829:C3S5F nidx=null]
Pasottia
 - Pasottia Parent et al., 2008 [ACCEPTED GENUS 272972:BSLJQ nidx=null]
 + Pasottia [ACCEPTED GENUS 276829:C3SCS nidx=null]
Passaloteuthidae
 - Passaloteuthidae (Naef, 1922) [ACCEPTED FAMILY 272972:BSH7F nidx=null]
 + Passaloteuthidae [ACCEPTED FAMILY 276829:BX58G nidx=null]
Passendorferia
 - Passendorferia (Brochwicz-Lewinski, 1973) [ACCEPTED GENUS 272972:BSLJR nidx=null]
 + Passendorferia [ACCEPTED GENUS 276829:C3SDR nidx=null]
Patagiosites
 - Patagiosites Spath, 1953 [ACCEPTED GENUS 272972:BSLJX nidx=null]
 + Patagiosites [ACCEPTED GENUS 276829:C3SFF nidx=null]
Patruliusiceras
 - Patruliusiceras Avram, 1978 [ACCEPTED GENUS 272972:BSLJY nidx=null]
 + Patruliusiceras [ACCEPTED GENUS 276829:C3SKK nidx=null]
Paulotropites
 - Paulotropites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSN5C nidx=null]
 + Paulotropites [ACCEPTED SUBGENUS 276829:C6295 nidx=null]
Pavlovia
 - Pavlovia Sepkoski, 2002 [ACCEPTED GENUS 272972:BSLK3 nidx=null]
 + Pavlovia [ACCEPTED GENUS 276829:C3SZW nidx=null]
Pearylandites
 - Pearylandites Kummel, 1953 [ACCEPTED GENUS 272972:BSLK5 nidx=null]
 + Pearylandites [ACCEPTED GENUS 276829:C3T7S nidx=null]
Pedicellaria
 - Pedicellaria Schrank [SYNONYM UNRANKED 272972:932YC nidx=null parent=63NKR]
 + Pedicellaria Schrank [SYNONYM UNRANKED 276829:BWS4L nidx=null parent=63NKR]
Pedioceras
 - Pedioceras (Gerhardt, 1897) [ACCEPTED GENUS 272972:BSLKC nidx=null]
 + Pedioceras [ACCEPTED GENUS 276829:C3TJ5 nidx=null]
Peltocrioceras
 - Peltocrioceras Spath, 1924 [ACCEPTED GENUS 272972:BSLKK nidx=null]
 + Peltocrioceras [ACCEPTED GENUS 276829:C3V3C nidx=null]
Peltoraspailites
 - Peltoraspailites Jeannet, 1951 [ACCEPTED GENUS 272972:BSLKL nidx=null]
 + Peltoraspailites [ACCEPTED GENUS 276829:C3V4X nidx=null]
Pemphigus (Pemphiginus) populi-globuli
 - Pemphigus (Pemphiginus) populi-globuli Fitch, 1859 [SYNONYM SPECIES 272972:BSVN5 nidx=null parent=76FFH]
 + Pemphigus (Pemphiginus) populi-globuli Fitch, 1859 [SYNONYM SPECIES 276829:CRR2M nidx=null parent=76FFH]
Pemphigus (Pemphigus) protospirae
 - Pemphigus (Pemphigus) protospirae Lichtenstein, 1885 [ACCEPTED SPECIES 272972:8PGSW nidx=null]
 + Pemphigus (Pemphigus) protospirae Lichtenstein, 1885 [ACCEPTED SPECIES 276829:CRR2W nidx=null]
Penaceras
 - Penaceras Cantú-Chapa, 1963 [ACCEPTED GENUS 272972:BSLKN nidx=null]
 + Penaceras [ACCEPTED GENUS 276829:C3VBR nidx=null]
Pennoceras
 - Pennoceras Miller & Unklesbay, 1942 [ACCEPTED GENUS 272972:BSLKR nidx=null]
 + Pennoceras [ACCEPTED GENUS 276829:C3VGS nidx=null]
Pentagonoceras
 - Pentagonoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSLKS nidx=null]
 + Pentagonoceras [ACCEPTED GENUS 276829:C3VKY nidx=null]
Peregrinoceras
 - Peregrinoceras Sazonova, 1971 [ACCEPTED GENUS 272972:BSLKT nidx=null]
 + Peregrinoceras [ACCEPTED GENUS 276829:C3VRK nidx=null]
Pericarinoceras
 - Pericarinoceras Zhao & Liang, 1966 [ACCEPTED GENUS 272972:BSLL2 nidx=null]
 + Pericarinoceras [ACCEPTED GENUS 276829:C3VT5 nidx=null]
Pericentris
 - Pericentris Walker, 1856 [SYNONYM GENUS 272972:9B99Y nidx=null parent=927VR]
 + Pericentris Pagenstecher, 1909 [SYNONYM GENUS 276829:95LVF nidx=null parent=927VR]
Pericleites
 - Pericleites (Renz, 1910) [ACCEPTED GENUS 272972:BSLL3 nidx=null]
 + Pericleites [ACCEPTED GENUS 276829:C3VTP nidx=null]
Pericyclaceae
 - Pericyclaceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGW4 nidx=null]
 + Pericyclaceae [ACCEPTED SUPERFAMILY 276829:BWXSY nidx=null]
Pericyclidae
 - Pericyclidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH7G nidx=null]
 + Pericyclidae [ACCEPTED FAMILY 276829:BX59P nidx=null]
Pericyclus
 - Pericyclus (Mojsisovics, 1882) [ACCEPTED GENUS 272972:BSLL8 nidx=null]
 + Pericyclus [ACCEPTED GENUS 276829:C3VTZ nidx=null]
Peripleurites
 - Peripleurites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSLLF nidx=null]
 + Peripleurites [ACCEPTED GENUS 276829:C3VX8 nidx=null]
Periptychoceras
 - Periptychoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSLLK nidx=null]
 + Periptychoceras [ACCEPTED GENUS 276829:C3VXL nidx=null]
Perisphinctaceae
 - Perisphinctaceae Steinman, 1890 [ACCEPTED SUPERFAMILY 272972:BSGW6 nidx=null]
 + Perisphinctaceae [ACCEPTED SUPERFAMILY 276829:BWXT2 nidx=null]
Perisphinctidae
 - Perisphinctidae Steinmann, 1890 [ACCEPTED FAMILY 272972:BSH7H nidx=null]
 + Perisphinctidae [ACCEPTED FAMILY 276829:BX59S nidx=null]
Perisphinctoidea
 - Perisphinctoidea Steinman, 1890 [ACCEPTED SUPERFAMILY 272972:BSFXM nidx=null]
 + Perisphinctoidea [ACCEPTED SUPERFAMILY 276829:BV9MC nidx=null]
Peritrochia
 - Peritrochia Girty, 1908 [ACCEPTED GENUS 272972:BSLLN nidx=null]
 + Peritrochia [ACCEPTED GENUS 276829:C3VZR nidx=null]
Pernoceras
 - Pernoceras Schindewolf, 1922 [ACCEPTED GENUS 272972:BSLLP nidx=null]
 + Pernoceras [ACCEPTED GENUS 276829:C3W3B nidx=null]
Pernodoceras
 - Pernodoceras Zhao & Liang, 1974 [ACCEPTED GENUS 272972:BSLLQ nidx=null]
 + Pernodoceras [ACCEPTED GENUS 276829:C3W3C nidx=null]
Peroniceras
 - Peroniceras (de Grossouvre, 1894) [ACCEPTED GENUS 272972:BSLLR nidx=null]
 + Peroniceras [ACCEPTED GENUS 276829:C3W3T nidx=null]
 + Peroniceras [ACCEPTED SUBGENUS 276829:C3W3V nidx=null]
Perrinites
 - Perrinites Böse, 1919 [ACCEPTED GENUS 272972:BSLLX nidx=null]
 + Perrinites [ACCEPTED GENUS 276829:C3W57 nidx=null]
Perrinitidae
 - Perrinitidae Miller & Furnish, 1940 [ACCEPTED FAMILY 272972:BSH7J nidx=null]
 + Perrinitidae [ACCEPTED FAMILY 276829:BX5BD nidx=null]
Petteroceras
 - Petteroceras Bogoslovsky, 1962 [ACCEPTED GENUS 272972:BSLM3 nidx=null]
 + Petteroceras [ACCEPTED GENUS 276829:C3WGF nidx=null]
Petteroceratidae
 - Petteroceratidae Becker & House, 1993 [ACCEPTED FAMILY 272972:BSH7K nidx=null]
 + Petteroceratidae [ACCEPTED FAMILY 276829:BX5BZ nidx=null]
Phalaena (Tortrix) avellana
 - Phalaena (Tortrix) avellana Linnaeus, 1758 [AMBIGUOUS_SYNONYM SPECIES 272972:BSYM8 nidx=null parent=G9HH]
 + Phalaena (Tortrix) avellana Linnaeus, 1758 [AMBIGUOUS_SYNONYM SPECIES 276829:D5GY9 nidx=null parent=G9HH]
Phalaena libania
 - Phalaena libania Stoll, 1781 [SYNONYM SPECIES 272972:97YFF nidx=null parent=3H39F]
 + Phalaena libania Cramer, 1781 [SYNONYM SPECIES 276829:D5H3Z nidx=null parent=CK8YS]
Phalaena multicolor
 - Phalaena multicolor Geoffroy, 1785 [SYNONYM SPECIES 272972:97YGT nidx=null parent=94BP9]
 + Phalaena multicolor De Fourcroy, 1785 [SYNONYM SPECIES 276829:D5H55 nidx=null parent=94BP9]
Phaneroceras
 - Phaneroceras (Plummer & Scott, 1937) [ACCEPTED GENUS 272972:BSLM4 nidx=null]
 + Phaneroceras [ACCEPTED GENUS 276829:C3WTD nidx=null]
Pharciceras
 - Pharciceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSLMC nidx=null]
 + Pharciceras [ACCEPTED GENUS 276829:C3WXL nidx=null]
Pharcicerataceae
 - Pharcicerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGW7 nidx=null]
 + Pharcicerataceae [ACCEPTED SUPERFAMILY 276829:BWXT5 nidx=null]
Pharciceratidae
 - Pharciceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH7R nidx=null]
 + Pharciceratidae [ACCEPTED FAMILY 276829:BX5CQ nidx=null]
Phillipsoceras
 - Phillipsoceras Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSLML nidx=null]
 + Phillipsoceras [ACCEPTED GENUS 276829:C3XRY nidx=null]
Phimatopus
 - Phimatopus Wallengren, 1869 [SYNONYM GENUS 272972:BS9GF nidx=null parent=93P76]
 + Phimatopus Lempke, 1961 [SYNONYM GENUS 276829:CTMZ3 nidx=null parent=93P76]
Phimenes curvatus
 - Phimenes curvatus (de Saussure, 1856) [ACCEPTED SPECIES 272972:4GDW7 nidx=null]
 + Phimenes curvatus (de Saussure, 1856) [ACCEPTED SPECIES 276829:CF63K nidx=null]
Phisonites
 - Phisonites Shevyrev, 1965 [ACCEPTED GENUS 272972:BSLMS nidx=null]
 + Phisonites [ACCEPTED GENUS 276829:C3XZH nidx=null]
Phoenixites
 - Phoenixites Becker, 1993 [ACCEPTED GENUS 272972:BSLMT nidx=null]
 + Phoenixites [ACCEPTED GENUS 276829:C3Y59 nidx=null]
Phormedites
 - Phormedites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSLMW nidx=null]
 + Phormedites [ACCEPTED GENUS 276829:C3Y78 nidx=null]
Phricodoceras
 - Phricodoceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSLMY nidx=null]
 + Phricodoceras [ACCEPTED GENUS 276829:C3YDD nidx=null]
Phylloceras
 - Phylloceras (Suess, 1865) [ACCEPTED GENUS 272972:BSLN2 nidx=null]
 + Phylloceras [ACCEPTED GENUS 276829:C3YJY nidx=null]
 + Phylloceras [ACCEPTED SUBGENUS 276829:C3YJZ nidx=null]
Phyllocerataceae
 - Phyllocerataceae Zittel, 1884 [ACCEPTED SUPERFAMILY 272972:BSGW8 nidx=null]
 + Phyllocerataceae [ACCEPTED SUPERFAMILY 276829:BWXTD nidx=null]
Phylloceratida
 - Phylloceratida (Zittel, 1884) [SYNONYM ORDER 272972:BSVS4 nidx=null parent=9GXM8]
 + Phylloceratida Schindewolf, 1923 [ACCEPTED ORDER 276829:CS447 nidx=null]
Phylloceratidae
 - Phylloceratidae Zittel, 1884 [ACCEPTED FAMILY 272972:9GVKK nidx=null]
 + Phylloceratidae [ACCEPTED FAMILY 276829:BX5FP nidx=null]
Phyllocladiscites
 - Phyllocladiscites (Mojsisovics, 1902) [ACCEPTED GENUS 272972:BSLN6 nidx=null]
 + Phyllocladiscites [ACCEPTED GENUS 276829:C3YK8 nidx=null]
Phyllopachyceras
 - Phyllopachyceras (Spath, 1925) [ACCEPTED GENUS 272972:BSLNB nidx=null]
 + Phyllopachyceras [ACCEPTED GENUS 276829:C3YMC nidx=null]
Phylloptychoceras
 - Phylloptychoceras Spath, 1953 [ACCEPTED GENUS 272972:BSLND nidx=null]
 + Phylloptychoceras [ACCEPTED GENUS 276829:C3YMG nidx=null]
Phyllosphaerites
 - Phyllosphaerites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSLNF nidx=null]
 + Phyllosphaerites [ACCEPTED GENUS 276829:C3YMP nidx=null]
Phyllytoceras
 - Phyllytoceras Wiedmann, 1970 [ACCEPTED GENUS 272972:BSLNG nidx=null]
 + Phyllytoceras [ACCEPTED GENUS 276829:C3YN8 nidx=null]
Phymatocarpus
 - Phymatocarpus F.Muell. [SYNONYM UNRANKED 272972:BSGRF nidx=null parent=5NB5]
 + Phymatocarpus F.Muell. [SYNONYM UNRANKED 276829:BWSVX nidx=null parent=5NB5]
Phymatoceratidae
 - Phymatoceratidae Hyatt, 1867 [ACCEPTED FAMILY 272972:BSFY5 nidx=null]
 + Phymatoceratidae [ACCEPTED FAMILY 276829:BV9XG nidx=null]
Physematites
 - Physematites Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSLNJ nidx=null]
 + Physematites [ACCEPTED GENUS 276829:C3YQF nidx=null]
Physodoceras
 - Physodoceras (Hyatt, 1900) [ACCEPTED GENUS 272972:BSLNK nidx=null]
 + Physodoceras [ACCEPTED GENUS 276829:C3YQX nidx=null]
Piatnitzkyceras
 - Piatnitzkyceras Medina & Riccardi, 2005 [ACCEPTED GENUS 272972:BSLNM nidx=null]
 + Piatnitzkyceras [ACCEPTED GENUS 276829:C3YST nidx=null]
Pictetia
 - Pictetia Uhlig, 1883 [ACCEPTED GENUS 272972:BSG45 nidx=null]
 + Pictetia [ACCEPTED GENUS 276829:BVFRY nidx=null]
Pielus byrsa
 - Pielus byrsa Pfitzner, 1914 [SYNONYM SPECIES 272972:982K2 nidx=null parent=4BD33]
 + Pielus byrsa Pfitzner, 1933 [SYNONYM SPECIES 276829:D5KCQ nidx=null parent=C262V]
Pinacites
 - Pinacites Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSLNQ nidx=null]
 + Pinacites [ACCEPTED GENUS 276829:C3Z75 nidx=null]
Pinacitidae
 - Pinacitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH7T nidx=null]
 + Pinacitidae [ACCEPTED FAMILY 276829:BX5H4 nidx=null]
Pinacoceras
 - Pinacoceras von Mojsisovics, 1873 [ACCEPTED GENUS 272972:BSLNR nidx=null]
 + Pinacoceras [ACCEPTED GENUS 276829:C3Z76 nidx=null]
Pinacocerataceae
 - Pinacocerataceae Mojsisovics, 1879 [ACCEPTED SUPERFAMILY 272972:BSGW9 nidx=null]
 + Pinacocerataceae [ACCEPTED SUPERFAMILY 276829:BWXTJ nidx=null]
Pinacoceratidae
 - Pinacoceratidae Mojsisovics, 1879 [ACCEPTED FAMILY 272972:BSH7V nidx=null]
 + Pinacoceratidae [ACCEPTED FAMILY 276829:BX5H5 nidx=null]
Pineus (Pineus) engelmannii
 - Pineus (Pineus) engelmannii Annand, 1928 [ACCEPTED SPECIES 272972:4HYB5 nidx=null]
 + Pineus (Pineus) engelmannii Annand, 1928 [ACCEPTED SPECIES 276829:CYJTK nidx=null]
Pineus (Pineus) patchiae
 - Pineus (Pineus) patchiae Börner, 1926 [ACCEPTED SPECIES 272972:8PHNX nidx=null]
 + Pineus (Pineus) patchiae Börner, 1926 [ACCEPTED SPECIES 276829:CYJTR nidx=null]
Pintoceras
 - Pintoceras Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSLNS nidx=null]
 + Pintoceras [ACCEPTED GENUS 276829:C3ZBT nidx=null]
Pistaciovitex
 - Pistaciovitex Kuntze [SYNONYM UNRANKED 272972:BSGSB nidx=null parent=QQR]
 + Pistaciovitex Kuntze [SYNONYM UNRANKED 276829:BWT2W nidx=null parent=QQR]
Placenticeras
 - Placenticeras Meek, 1876 [ACCEPTED GENUS 272972:BSLNW nidx=null]
 + Placenticeras [ACCEPTED GENUS 276829:C3ZMD nidx=null]
Placenticeratidae
 - Placenticeratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH7W nidx=null]
 + Placenticeratidae [ACCEPTED FAMILY 276829:BX5HS nidx=null]
Placites
 - Placites Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSLNX nidx=null]
 + Placites [ACCEPTED GENUS 276829:C3ZMK nidx=null]
Planitornoceras
 - Planitornoceras Becker, 1995 [ACCEPTED GENUS 272972:BSLP7 nidx=null]
 + Planitornoceras [ACCEPTED GENUS 276829:C3ZZP nidx=null]
Planodiscoceras
 - Planodiscoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSLP8 nidx=null]
 + Planodiscoceras [ACCEPTED GENUS 276829:C422F nidx=null]
Planohamites
 - Planohamites Monks, 2002 [ACCEPTED GENUS 272972:BSLP9 nidx=null]
 + Planohamites [ACCEPTED GENUS 276829:C422Q nidx=null]
Platiknemiceras
 - Platiknemiceras (Bataller, 1954) [SYNONYM GENUS 272972:BSN5N nidx=null parent=BSN5P]
 + Platiknemiceras [ACCEPTED SUBGENUS 276829:C62P6 nidx=null]
Platotropites
 - Platotropites Wang & He, 1976 [ACCEPTED GENUS 272972:BSLPB nidx=null]
 + Platotropites [ACCEPTED GENUS 276829:C4264 nidx=null]
Platycerus auriculatus
 - Platycerus auriculatus Guérin-Méneville, 1833 [SYNONYM SPECIES 272972:6VPPS nidx=null parent=73XVW]
 + Platycerus auriculatus Gory, 1833 [SYNONYM SPECIES 276829:CYWW8 nidx=null parent=CTJYZ]
Platyclymenia
 - Platyclymenia Hyatt, 1884 [ACCEPTED GENUS 272972:BSLPC nidx=null]
 + Platyclymenia [ACCEPTED GENUS 276829:C428C nidx=null]
 + Platyclymenia [ACCEPTED SUBGENUS 276829:C428D nidx=null]
Platyclymeniaceae
 - Platyclymeniaceae Wedekind, 1914 [ACCEPTED SUPERFAMILY 272972:BSGWB nidx=null]
 + Platyclymeniaceae [ACCEPTED SUPERFAMILY 276829:BWXTM nidx=null]
Platyclymeniidae
 - Platyclymeniidae Wedekind, 1914 [ACCEPTED FAMILY 272972:BSH7X nidx=null]
 + Platyclymeniidae [ACCEPTED FAMILY 276829:BX5JF nidx=null]
Platycuccoceras
 - Platycuccoceras Bucher, 1988 [ACCEPTED GENUS 272972:BSLPF nidx=null]
 + Platycuccoceras [ACCEPTED GENUS 276829:C428M nidx=null]
Platygoniatites
 - Platygoniatites Ruzhencev, 1956 [ACCEPTED GENUS 272972:BSLPG nidx=null]
 + Platygoniatites [ACCEPTED GENUS 276829:C429H nidx=null]
Platylenticeratidae
 - Platylenticeratidae Casey, 1973 [ACCEPTED FAMILY 272972:BSH7Y nidx=null]
 + Platylenticeratidae [ACCEPTED FAMILY 276829:BX5JN nidx=null]
Platypleuroceras
 - Platypleuroceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSLPH nidx=null]
 + Platypleuroceras [ACCEPTED GENUS 276829:C42JF nidx=null]
Playfordites
 - Playfordites Becker et al., 1993 [ACCEPTED GENUS 272972:BSLPJ nidx=null]
 + Playfordites [ACCEPTED GENUS 276829:C42NR nidx=null]
Plesechioceras
 - Plesechioceras Trueman & Williams, 1925 [ACCEPTED GENUS 272972:BSLPK nidx=null]
 + Plesechioceras [ACCEPTED GENUS 276829:C42Z9 nidx=null]
Plesiacanthoceras
 - Plesiacanthoceras (Haas, 1964) [ACCEPTED GENUS 272972:BSLPL nidx=null]
 + Plesiacanthoceras [ACCEPTED GENUS 276829:C42ZB nidx=null]
Plesiotexanites
 - Plesiotexanites (Matsumoto, 1970) [ACCEPTED GENUS 272972:BSLPP nidx=null]
 + Plesiotexanites [ACCEPTED GENUS 276829:C434M nidx=null]
Plesiovascoceras
 - Plesiovascoceras Spath, 1926 [SYNONYM GENUS 272972:BSLPR nidx=null parent=BSJV7]
 + Plesiovascoceras [ACCEPTED GENUS 276829:C434R nidx=null]
Pleuroceras
 - Pleuroceras Hyatt, 1868 [ACCEPTED GENUS 272972:BSG49 nidx=null]
 + Pleuroceras [ACCEPTED GENUS 276829:BVFZ8 nidx=null]
 + Pleuroceras Cossmann, 1909 [SYNONYM GENUS 276829:BVFZ9 nidx=null parent=BVFZ7]
Pleuroclymenia
 - Pleuroclymenia (Schindewolf, 1934) [ACCEPTED GENUS 272972:BSLPS nidx=null]
 + Pleuroclymenia [ACCEPTED GENUS 276829:C436Q nidx=null]
Pleurodistichites
 - Pleurodistichites Tozer, 1980 [ACCEPTED GENUS 272972:BSLPW nidx=null]
 + Pleurodistichites [ACCEPTED GENUS 276829:C437B nidx=null]
Pleurofrechites
 - Pleurofrechites Tozer, 1994 [ACCEPTED GENUS 272972:BSLPX nidx=null]
 + Pleurofrechites [ACCEPTED GENUS 276829:C437K nidx=null]
Pleurogyronites
 - Pleurogyronites Tozer, 1994 [ACCEPTED GENUS 272972:BSLPY nidx=null]
 + Pleurogyronites [ACCEPTED GENUS 276829:C437R nidx=null]
Pleuronodoceras
 - Pleuronodoceras Zhao & Liang, 1965 [ACCEPTED GENUS 272972:BSLPZ nidx=null]
 + Pleuronodoceras [ACCEPTED GENUS 276829:C438F nidx=null]
Pleuronodoceratidae
 - Pleuronodoceratidae Zhao et al., 1978 [ACCEPTED FAMILY 272972:BSH7Z nidx=null]
 + Pleuronodoceratidae [ACCEPTED FAMILY 276829:BX5KN nidx=null]
Pleurotropites
 - Pleurotropites Tozer, 1994 [ACCEPTED GENUS 272972:BSLQ2 nidx=null]
 + Pleurotropites [ACCEPTED GENUS 276829:C43B3 nidx=null]
Plumerioideae
 - Plumerioideae Luerss. [SYNONYM UNRANKED 272972:K6H nidx=null parent=K97]
 + Plumerioideae Luerss. [SYNONYM UNRANKED 276829:BXC7Z nidx=null parent=K97]
Podagrosites
 - Podagrosites Guex, 1973 [ACCEPTED GENUS 272972:BSLQ6 nidx=null]
 + Podagrosites [ACCEPTED GENUS 276829:C43QK nidx=null]
Poecilimon (Poecilimon) adentatus
 - Poecilimon (Poecilimon) adentatus Ramme, 1933 [ACCEPTED SPECIES 272972:4KSH5 nidx=null]
 + Poecilimon (Poecilimon) adentatus Ramme, 1933 [ACCEPTED SPECIES 276829:CZBNG nidx=null]
Poecilimon (Poecilimon) iucundus
 - Poecilimon (Poecilimon) iucundus Ünal, 2003 [ACCEPTED SPECIES 272972:4KSK4 nidx=null]
 + Poecilimon (Poecilimon) iucundus Ünal, 2003 [ACCEPTED SPECIES 276829:CZBP4 nidx=null]
Poecilus quadripunctatus
 - Poecilus quadripunctatus Letzner, 1852 unavailable name [AMBIGUOUS_SYNONYM SPECIES 272972:BSXD7 nidx=null parent=8LWRK]
 + Poecilus quadripunctatus Letzner, 1852 [AMBIGUOUS_SYNONYM SPECIES 276829:CZC8P nidx=null parent=8LWRK]
 + Poecilus quadripunctatus (Letzner, 1852) [AMBIGUOUS_SYNONYM SPECIES 276829:CZC8Q nidx=null parent=8LWQZ]
Polaricyclus
 - Polaricyclus Riley, 1990 [ACCEPTED GENUS 272972:BSLQ7 nidx=null]
 + Polaricyclus [ACCEPTED GENUS 276829:C44FD nidx=null]
Polonoceras
 - Polonoceras (Dybczynski, 1913) [ACCEPTED GENUS 272972:BSLQ9 nidx=null]
 + Polonoceras [ACCEPTED GENUS 276829:C44JG nidx=null]
Polycyclus
 - Polycyclus Mojsisovics, 1889 [SYNONYM GENUS 272972:BSLQD nidx=null parent=BSK4Y]
 + Polycyclus Lamarck, 1815 [SYNONYM GENUS 276829:C44M4 nidx=null parent=BVTX4]
Polygala planellasi
 - Polygala planellasi Molinet & M. Gómez [SYNONYM SPECIES 272972:BPM5G nidx=null parent=H96R]
 + Polygala planellasi Molinet & M. Gómez [SYNONYM SPECIES 276829:CZGDJ nidx=null parent=H96R]
Polymorphites
 - Polymorphites Haug, 1887 [ACCEPTED GENUS 272972:BSLQG nidx=null]
 + Polymorphites [ACCEPTED GENUS 276829:C44P2 nidx=null]
Polymorphitidae
 - Polymorphitidae Haug, 1887 [ACCEPTED FAMILY 272972:BSH82 nidx=null]
 + Polymorphitidae [ACCEPTED FAMILY 276829:BX5ML nidx=null]
Polyptychites
 - Polyptychites (Pavlow, 1892) [ACCEPTED GENUS 272972:BSLQL nidx=null]
 + Polyptychites [ACCEPTED GENUS 276829:C44Q9 nidx=null]
 + Polyptychites [ACCEPTED SUBGENUS 276829:C44QB nidx=null]
Polyptychitidae
 - Polyptychitidae Wedekind, 1918 [ACCEPTED FAMILY 272972:BSH83 nidx=null]
 + Polyptychitidae [ACCEPTED FAMILY 276829:BX5MQ nidx=null]
Polyptychoceras
 - Polyptychoceras Yabe, 1927 [ACCEPTED GENUS 272972:BSLQR nidx=null]
 + Polyptychoceras [ACCEPTED GENUS 276829:C44QC nidx=null]
 + Polyptychoceras [ACCEPTED SUBGENUS 276829:C44QD nidx=null]
Pompeckjites
 - Pompeckjites (von Mojsisovics, 1902) [ACCEPTED GENUS 272972:BSN5Q nidx=null]
 + Pompeckjites [ACCEPTED SUBGENUS 276829:C62TJ nidx=null]
Ponteixites
 - Ponteixites Warren, 1934 [ACCEPTED GENUS 272972:BSLQV nidx=null]
 + Ponteixites [ACCEPTED GENUS 276829:C44TL nidx=null]
Ponticeras
 - Ponticeras Matern, 1929 [ACCEPTED GENUS 272972:BSLQW nidx=null]
 + Ponticeras [ACCEPTED GENUS 276829:C44TN nidx=null]
Ponticeratidae
 - Ponticeratidae Korn, 2002 [SYNONYM FAMILY 272972:BSH84 nidx=null parent=BSGX8]
 + Ponticeratidae [ACCEPTED FAMILY 276829:BX5N6 nidx=null]
Popanoceras
 - Popanoceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSLQX nidx=null]
 + Popanoceras [ACCEPTED GENUS 276829:C44W6 nidx=null]
Popanocerataceae
 - Popanocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGWC nidx=null]
 + Popanocerataceae [ACCEPTED SUPERFAMILY 276829:BWXTZ nidx=null]
Popanoceratidae
 - Popanoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH85 nidx=null]
 + Popanoceratidae [ACCEPTED FAMILY 276829:BX5NH nidx=null]
Popovites
 - Popovites Tozer, 1965 [ACCEPTED GENUS 272972:BSLQY nidx=null]
 + Popovites [ACCEPTED GENUS 276829:C44WS nidx=null]
Porina dirempta
 - Porina dirempta Walker, 1856 [SYNONYM SPECIES 272972:947GR nidx=null parent=4BD37]
 + Porina dirempta Walker, 1865 [SYNONYM SPECIES 276829:C68QD nidx=null parent=C262Y]
Porina mairi
 - Porina mairi Butler, 1873 [SYNONYM SPECIES 272972:9842M nidx=null parent=93YXZ]
 + Porina mairi Buller, 1873 [PROVISIONALLY_ACCEPTED SPECIES 276829:C45RB nidx=null]
Postclymenia
 - Postclymenia Schmidt, 1924 [ACCEPTED GENUS 272972:BSLR3 nidx=null]
 + Postclymenia [ACCEPTED GENUS 276829:C452V nidx=null]
Postglatziella
 - Postglatziella Schindewolf, 1937 [ACCEPTED GENUS 272972:BSLR4 nidx=null]
 + Postglatziella [ACCEPTED GENUS 276829:C4534 nidx=null]
Posttornoceras
 - Posttornoceras Wedekind, 1910 [ACCEPTED GENUS 272972:BSLR5 nidx=null]
 + Posttornoceras [ACCEPTED GENUS 276829:C453K nidx=null]
Posttornoceratidae
 - Posttornoceratidae Bogoslovsky, 1962 [ACCEPTED FAMILY 272972:BSH86 nidx=null]
 + Posttornoceratidae [ACCEPTED FAMILY 276829:BX5NW nidx=null]
Praeactinocamax
 - Praeactinocamax Naidin, 1964 [ACCEPTED GENUS 272972:BSLR6 nidx=null]
 + Praeactinocamax [ACCEPTED GENUS 276829:C4585 nidx=null]
Praedalmasiceras
 - Praedalmasiceras Frau et al., 2016 [ACCEPTED GENUS 272972:BSLR7 nidx=null]
 + Praedalmasiceras [ACCEPTED GENUS 276829:C459H nidx=null]
Praedaraelites
 - Praedaraelites Schindewolf, 1934 [ACCEPTED GENUS 272972:BSLR8 nidx=null]
 + Praedaraelites [ACCEPTED GENUS 276829:C459J nidx=null]
Praeglyphioceras
 - Praeglyphioceras Wedekind, 1908 [ACCEPTED GENUS 272972:BSLR9 nidx=null]
 + Praeglyphioceras [ACCEPTED GENUS 276829:C459T nidx=null]
Praeglyphioceratidae
 - Praeglyphioceratidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSH88 nidx=null]
 + Praeglyphioceratidae [ACCEPTED FAMILY 276829:BX5PV nidx=null]
Praegravesia
 - Praegravesia Zeiss, 1987 [ACCEPTED GENUS 272972:BSLRB nidx=null]
 + Praegravesia [ACCEPTED GENUS 276829:C459X nidx=null]
Praeleptosphinctes
 - Praeleptosphinctes (Westermann, 1956) [SYNONYM GENUS 272972:BSN5S nidx=null parent=BSN5T]
 + Praeleptosphinctes [ACCEPTED SUBGENUS 276829:C62V6 nidx=null]
Praemeroceras
 - Praemeroceras Becker, 1993 [ACCEPTED GENUS 272972:BSLRC nidx=null]
 + Praemeroceras [ACCEPTED GENUS 276829:C45BH nidx=null]
Praeoppelia
 - Praeoppelia (Westermann, 1969) [SYNONYM GENUS 272972:BSN5V nidx=null parent=BSN5W]
 + Praeoppelia [ACCEPTED SUBGENUS 276829:C62V8 nidx=null]
Praesibirites
 - Praesibirites Dagis & Ermakova, 1988 [ACCEPTED GENUS 272972:BSLRD nidx=null]
 + Praesibirites [ACCEPTED GENUS 276829:C45CR nidx=null]
Praewerneroceras
 - Praewerneroceras Chlupac & Turek, 1983 [ACCEPTED GENUS 272972:BSLRF nidx=null]
 + Praewerneroceras [ACCEPTED GENUS 276829:C45D8 nidx=null]
Pratumidiscus
 - Pratumidiscus Bulot et al., 2014 [ACCEPTED GENUS 272972:BSLRG nidx=null]
 + Pratumidiscus [ACCEPTED GENUS 276829:C45DV nidx=null]
Praus
 - Praus Walker, 1856 [SYNONYM GENUS 272972:9B9B3 nidx=null parent=929DT]
 + Praus Pagenstecher, 1909 [SYNONYM GENUS 276829:95M4N nidx=null parent=929DT]
Preflorianites
 - Preflorianites (Spath, 1930) [ACCEPTED GENUS 272972:BSLRH nidx=null]
 + Preflorianites [ACCEPTED GENUS 276829:C45FJ nidx=null]
Prehoffmannia
 - Prehoffmannia Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSLRK nidx=null]
 + Prehoffmannia [ACCEPTED GENUS 276829:C45FR nidx=null]
Prenkites
 - Prenkites Arthaber, 1911 [ACCEPTED GENUS 272972:BSLRL nidx=null]
 + Prenkites [ACCEPTED GENUS 276829:C45GW nidx=null]
Preshumardites
 - Preshumardites Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSLRM nidx=null]
 + Preshumardites [ACCEPTED GENUS 276829:C45HB nidx=null]
Pricella
 - Pricella Korn, 1991 [ACCEPTED GENUS 272972:BSLRN nidx=null]
 + Pricella [ACCEPTED GENUS 276829:C45J3 nidx=null]
Prieserites
 - Prieserites Jeannet, 1951 [ACCEPTED GENUS 272972:BSLRP nidx=null]
 + Prieserites [ACCEPTED GENUS 276829:C45J4 nidx=null]
Primogoniatites
 - Primogoniatites Korn et al., 2010 [ACCEPTED GENUS 272972:BSLRR nidx=null]
 + Primogoniatites [ACCEPTED GENUS 276829:C45JW nidx=null]
Prionites
 - Prionites Waagen, 1895 [ACCEPTED GENUS 272972:BSLRS nidx=null]
 + Prionites [ACCEPTED GENUS 276829:C45L5 nidx=null]
Prionitidae
 - Prionitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH8B nidx=null]
 + Prionitidae [ACCEPTED FAMILY 276829:BX5QQ nidx=null]
Prionoceras
 - Prionoceras Sepkoski, 2002 [ACCEPTED GENUS 272972:BSLRT nidx=null]
 + Prionoceras [ACCEPTED GENUS 276829:C45LB nidx=null]
Prionocerataceae
 - Prionocerataceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGWD nidx=null]
 + Prionocerataceae [ACCEPTED SUPERFAMILY 276829:BWXVC nidx=null]
Prionoceratidae
 - Prionoceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSH8C nidx=null]
 + Prionoceratidae [ACCEPTED FAMILY 276829:BX5QR nidx=null]
Prionocyclites
 - Prionocyclites Kennedy, 1988 [ACCEPTED GENUS 272972:BSLRV nidx=null]
 + Prionocyclites [ACCEPTED GENUS 276829:C45LJ nidx=null]
Prionocycloceras
 - Prionocycloceras Spath, 1926 [ACCEPTED GENUS 272972:BSLRW nidx=null]
 + Prionocycloceras [ACCEPTED GENUS 276829:C45LK nidx=null]
Prionocyclus
 - Prionocyclus Meek, 1876 [ACCEPTED GENUS 272972:BSLRX nidx=null]
 + Prionocyclus [ACCEPTED GENUS 276829:C45LM nidx=null]
Prionolobus
 - Prionolobus (Waagen, 1895) [ACCEPTED GENUS 272972:BSLRY nidx=null]
 + Prionolobus [ACCEPTED GENUS 276829:C45LZ nidx=null]
Proarcestes
 - Proarcestes (Mojsisovic, 1893) [ACCEPTED GENUS 272972:BSLS8 nidx=null]
 + Proarcestes [ACCEPTED GENUS 276829:C45S3 nidx=null]
Proarcestidae
 - Proarcestidae Wiedmann, 1973 [ACCEPTED FAMILY 272972:BSH8D nidx=null]
 + Proarcestidae [ACCEPTED FAMILY 276829:BX5R3 nidx=null]
Proaustraliceras
 - Proaustraliceras (Kakabadze, 1977) [SYNONYM GENUS 272972:BSN5X nidx=null parent=BSN5Y]
 + Proaustraliceras [ACCEPTED SUBGENUS 276829:C62W3 nidx=null]
Proavites
 - Proavites Arthaber, 1896 [ACCEPTED GENUS 272972:BSLSC nidx=null]
 + Proavites [ACCEPTED GENUS 276829:C45SF nidx=null]
Probeloceras
 - Probeloceras (Clarke, 1898) [ACCEPTED GENUS 272972:BSLSD nidx=null]
 + Probeloceras [ACCEPTED GENUS 276829:C45SM nidx=null]
Procarnites
 - Procarnites Arthaber, 1911 [ACCEPTED GENUS 272972:BSLSH nidx=null]
 + Procarnites [ACCEPTED GENUS 276829:C45WW nidx=null]
Procarnitidae
 - Procarnitidae Zhao, 1959 [ACCEPTED FAMILY 272972:BSH8F nidx=null]
 + Procarnitidae [ACCEPTED FAMILY 276829:BX5R9 nidx=null]
Procheloniceras
 - Procheloniceras (Spath, 1923) [ACCEPTED GENUS 272972:BSLSS nidx=null]
 + Procheloniceras [ACCEPTED GENUS 276829:C45Y9 nidx=null]
Prochorites
 - Prochorites (Clausen, 1969) [ACCEPTED GENUS 272972:BSLSW nidx=null]
 + Prochorites [ACCEPTED GENUS 276829:C45YL nidx=null]
Prociphilus (Paraprociphilus) tessellatus
 - Prociphilus (Paraprociphilus) tessellatus (Fitch, 1851) [ACCEPTED SPECIES 272972:4MNFK nidx=null]
 + Prociphilus (Paraprociphilus) tessellatus (Fitch, 1851) [ACCEPTED SPECIES 276829:CV6HH nidx=null]
Prociphilus (Stagona) himalayaensis
 - Prociphilus (Stagona) himalayaensis Chakrabarti, 1976 [ACCEPTED SPECIES 272972:BSXLV nidx=null]
 + Prociphilus (Stagona) himalayaensis Chakrabarti, 1976 [ACCEPTED SPECIES 276829:D246Q nidx=null]
Procladiscites
 - Procladiscites von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSLT5 nidx=null]
 + Procladiscites [ACCEPTED GENUS 276829:C45ZJ nidx=null]
Procolumbites
 - Procolumbites Astachova, 1960 [ACCEPTED GENUS 272972:BSLT6 nidx=null]
 + Procolumbites [ACCEPTED GENUS 276829:C4629 nidx=null]
Procurvoceratites
 - Procurvoceratites Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSLT7 nidx=null]
 + Procurvoceratites [ACCEPTED GENUS 276829:C462X nidx=null]
Procymaclymenia
 - Procymaclymenia Korn, 2002 [ACCEPTED GENUS 272972:BSLT8 nidx=null]
 + Procymaclymenia [ACCEPTED GENUS 276829:C4633 nidx=null]
Prodactylioceras
 - Prodactylioceras Spath, 1923 [ACCEPTED GENUS 272972:BSLT9 nidx=null]
 + Prodactylioceras [ACCEPTED GENUS 276829:C463C nidx=null]
Prodrepanites
 - Prodrepanites Tozer, 1994 [ACCEPTED GENUS 272972:BSLTB nidx=null]
 + Prodrepanites [ACCEPTED GENUS 276829:C465J nidx=null]
Prodromites
 - Prodromites Smith & Weller, 1901 [ACCEPTED GENUS 272972:BSLTC nidx=null]
 + Prodromites [ACCEPTED GENUS 276829:C465M nidx=null]
Prodromitidae
 - Prodromitidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSH8G nidx=null]
 + Prodromitidae [ACCEPTED FAMILY 276829:BX5RS nidx=null]
Progoniatites
 - Progoniatites Korn et al., 2003 [ACCEPTED GENUS 272972:BSLTD nidx=null]
 + Progoniatites [ACCEPTED GENUS 276829:C467N nidx=null]
Progonioclymenia
 - Progonioclymenia Schindewolf, 1937 [ACCEPTED GENUS 272972:BSLTF nidx=null]
 + Progonioclymenia [ACCEPTED GENUS 276829:C467R nidx=null]
Progonoceratites
 - Progonoceratites Schrammen, 1928 [ACCEPTED GENUS 272972:BSLTG nidx=null]
 + Progonoceratites [ACCEPTED GENUS 276829:C467T nidx=null]
Proharpoceras
 - Proharpoceras Chao, 1950 [ACCEPTED GENUS 272972:BSLTH nidx=null]
 + Proharpoceras [ACCEPTED GENUS 276829:C468K nidx=null]
Prohungarites
 - Prohungarites Spath, 1934 [ACCEPTED GENUS 272972:BSLTJ nidx=null]
 + Prohungarites [ACCEPTED GENUS 276829:C468Q nidx=null]
Prohysteroceras
 - Prohysteroceras Spath, 1921 [ACCEPTED GENUS 272972:BSLTK nidx=null]
 + Prohysteroceras [ACCEPTED GENUS 276829:C4695 nidx=null]
Prohysteroceras hanhaense
 - Prohysteroceras hanhaense (Haas, 1942) [ACCEPTED SPECIES 272972:BSXM3 nidx=null]
 + Prohysteroceras hanhaense (Hass, 1942) [SYNONYM SPECIES 276829:D25K8 nidx=null parent=CKR63]
Projuvavites
 - Projuvavites Tozer, 1971 [ACCEPTED GENUS 272972:BSLTL nidx=null]
 + Projuvavites [ACCEPTED GENUS 276829:C469N nidx=null]
Prolecanites
 - Prolecanites (Mojsisovics, 1882) [ACCEPTED GENUS 272972:BSLTP nidx=null]
 + Prolecanites [ACCEPTED GENUS 276829:C46B7 nidx=null]
Prolecanitidae
 - Prolecanitidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSH8H nidx=null]
 + Prolecanitidae [ACCEPTED FAMILY 276829:BX5SG nidx=null]
Prolobites
 - Prolobites Karpinsky, 1885 [ACCEPTED GENUS 272972:BSLTS nidx=null]
 + Prolobites [ACCEPTED GENUS 276829:C46BS nidx=null]
Prolobitidae
 - Prolobitidae Wedekind, 1913 [ACCEPTED FAMILY 272972:BSH8J nidx=null]
 + Prolobitidae [ACCEPTED FAMILY 276829:BX5SH nidx=null]
Prolyelliceras
 - Prolyelliceras Spath, 1930 [ACCEPTED GENUS 272972:BSLTT nidx=null]
 + Prolyelliceras [ACCEPTED GENUS 276829:C46BW nidx=null]
Prolyelliceratidae
 - Prolyelliceratidae Latil et al., 2009 [ACCEPTED FAMILY 272972:BSH8K nidx=null]
 + Prolyelliceratidae [ACCEPTED FAMILY 276829:BX5SL nidx=null]
Promarathonites
 - Promarathonites Popov, 1987 [ACCEPTED GENUS 272972:BSLTW nidx=null]
 + Promarathonites [ACCEPTED GENUS 276829:C46C4 nidx=null]
Promicroceras
 - Promicroceras Spath, 1925 [ACCEPTED GENUS 272972:BSLTX nidx=null]
 + Promicroceras [ACCEPTED GENUS 276829:C46CP nidx=null]
Pronorites
 - Pronorites Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSLTY nidx=null]
 + Pronorites [ACCEPTED GENUS 276829:C46DV nidx=null]
Pronoritidae
 - Pronoritidae Frech, 1901 [ACCEPTED FAMILY 272972:BSH8L nidx=null]
 + Pronoritidae [ACCEPTED FAMILY 276829:BX5T4 nidx=null]
Properrinites
 - Properrinites (Elias, 1938) [ACCEPTED GENUS 272972:BSLTZ nidx=null]
 + Properrinites [ACCEPTED GENUS 276829:C46G4 nidx=null]
Propinacoceras
 - Propinacoceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSLV3 nidx=null]
 + Propinacoceras [ACCEPTED GENUS 276829:C46GQ nidx=null]
Propopanoceras
 - Propopanoceras Toumansky, 1938 [ACCEPTED GENUS 272972:BSLV4 nidx=null]
 + Propopanoceras [ACCEPTED GENUS 276829:C46J2 nidx=null]
Proptychites
 - Proptychites Waagen, 1895 [ACCEPTED GENUS 272972:BSLV5 nidx=null]
 + Proptychites [ACCEPTED GENUS 276829:C46J8 nidx=null]
Proptychitidae
 - Proptychitidae Waagen, 1895 [ACCEPTED FAMILY 272972:BSH8M nidx=null]
 + Proptychitidae [ACCEPTED FAMILY 276829:BX5TB nidx=null]
Proptychitoides
 - Proptychitoides Spath, 1930 [ACCEPTED GENUS 272972:BSLV6 nidx=null]
 + Proptychitoides [ACCEPTED GENUS 276829:C46JB nidx=null]
Proshumardites
 - Proshumardites Rauser-Tschernoussowa, 1928 [ACCEPTED GENUS 272972:BSLV9 nidx=null]
 + Proshumardites [ACCEPTED GENUS 276829:C46KX nidx=null]
Prosicanites
 - Prosicanites Toumansky, 1937 [ACCEPTED GENUS 272972:BSLVC nidx=null]
 + Prosicanites [ACCEPTED GENUS 276829:C46KY nidx=null]
Prosphingites
 - Prosphingites Mojsisovics, 1886 [ACCEPTED GENUS 272972:BSLVD nidx=null]
 + Prosphingites [ACCEPTED GENUS 276829:C46MP nidx=null]
Prosphingitidae
 - Prosphingitidae Zacharov, 1978 [ACCEPTED FAMILY 272972:BSH8N nidx=null]
 + Prosphingitidae [ACCEPTED FAMILY 276829:BX5TW nidx=null]
Prosphingitoides
 - Prosphingitoides Shevyrev, 1995 [ACCEPTED GENUS 272972:BSLVF nidx=null]
 + Prosphingitoides [ACCEPTED GENUS 276829:C46MQ nidx=null]
Prostacheoceras
 - Prostacheoceras Ruzhencev, 1937 [ACCEPTED GENUS 272972:BSLVG nidx=null]
 + Prostacheoceras [ACCEPTED GENUS 276829:C46MS nidx=null]
Protacanthoceras
 - Protacanthoceras Spath, 1923 [ACCEPTED GENUS 272972:BSLVH nidx=null]
 + Protacanthoceras [ACCEPTED GENUS 276829:C46NM nidx=null]
Protactoclymenia
 - Protactoclymenia Wedekind, 1908 [ACCEPTED GENUS 272972:BSLVJ nidx=null]
 + Protactoclymenia [ACCEPTED GENUS 276829:C46NN nidx=null]
Protancyloceras
 - Protancyloceras Spath, 1924 [ACCEPTED GENUS 272972:BSLVK nidx=null]
 + Protancyloceras [ACCEPTED GENUS 276829:C46NV nidx=null]
Protancyloceratidae
 - Protancyloceratidae (Breistroffer, 1947) [ACCEPTED FAMILY 272972:BSH8V nidx=null]
 + Protancyloceratidae [ACCEPTED FAMILY 276829:BX5VD nidx=null]
Protancyloceratoidea
 - Protancyloceratoidea Breistroffer, 1947 [ACCEPTED SUPERFAMILY 272972:BSGWF nidx=null]
 + Protancyloceratoidea [ACCEPTED SUPERFAMILY 276829:BWXVX nidx=null]
Protengonoceras
 - Protengonoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSLVM nidx=null]
 + Protengonoceras [ACCEPTED GENUS 276829:C46QF nidx=null]
Protetragonites
 - Protetragonites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSLVN nidx=null]
 + Protetragonites [ACCEPTED GENUS 276829:C46RT nidx=null]
Proteusites
 - Proteusites Hauer, 1887 [ACCEPTED GENUS 272972:BSLVR nidx=null]
 + Proteusites [ACCEPTED GENUS 276829:C46RY nidx=null]
Proteusites kellneri
 - Proteusites kellneri Hauer, 1887 [ACCEPTED SPECIES 272972:BSXMZ nidx=null]
 + Proteusites kellneri Hauer et al., 1968 [ACCEPTED SPECIES 276829:D2BCP nidx=null]
Proteusitidae
 - Proteusitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSH8W nidx=null]
 + Proteusitidae [ACCEPTED FAMILY 276829:BX5VZ nidx=null]
Protexanites
 - Protexanites Matsumoto, 1955 [ACCEPTED GENUS 272972:BSLVS nidx=null]
 + Protexanites [ACCEPTED GENUS 276829:C46RZ nidx=null]
 + Protexanites [ACCEPTED SUBGENUS 276829:C46S2 nidx=null]
Prothalassoceras
 - Prothalassoceras Böse, 1919 [ACCEPTED GENUS 272972:BSLVV nidx=null]
 + Prothalassoceras [ACCEPTED GENUS 276829:C46S3 nidx=null]
Protocanites
 - Protocanites Schmidt, 1922 [ACCEPTED GENUS 272972:BSLVW nidx=null]
 + Protocanites [ACCEPTED GENUS 276829:C46TD nidx=null]
Protogrammoceras
 - Protogrammoceras Spath, 1913 [ACCEPTED GENUS 272972:BSLVX nidx=null]
 + Protogrammoceras [ACCEPTED GENUS 276829:C46YW nidx=null]
 + Protogrammoceras [ACCEPTED SUBGENUS 276829:C46YX nidx=null]
Protohoplites
 - Protohoplites Spath, 1923 [ACCEPTED GENUS 272972:BSLW2 nidx=null]
 + Protohoplites [ACCEPTED GENUS 276829:C46ZH nidx=null]
 + Protohoplites [ACCEPTED SUBGENUS 276829:C46ZJ nidx=null]
Protoplatytes
 - Protoplatytes Cockerell, 1905 [ACCEPTED GENUS 272972:BSLW4 nidx=null]
 + Protoplatytes [ACCEPTED GENUS 276829:C473Q nidx=null]
Prototoceras
 - Prototoceras Spath, 1930 [ACCEPTED GENUS 272972:BSLW5 nidx=null]
 + Prototoceras [ACCEPTED GENUS 276829:C478F nidx=null]
Protoxyclymenia
 - Protoxyclymenia Schindewolf, 1923 [ACCEPTED GENUS 272972:BSLW6 nidx=null]
 + Protoxyclymenia [ACCEPTED GENUS 276829:C479R nidx=null]
Protrachyceras
 - Protrachyceras (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSLW7 nidx=null]
 + Protrachyceras [ACCEPTED GENUS 276829:C47B8 nidx=null]
Prouddenites
 - Prouddenites Miller, 1930 [ACCEPTED GENUS 272972:BSLWB nidx=null]
 + Prouddenites [ACCEPTED GENUS 276829:C47D7 nidx=null]
Pseudacanthodiscus
 - Pseudacanthodiscus Baraboschkin, 1997 [ACCEPTED GENUS 272972:BSLWD nidx=null]
 + Pseudacanthodiscus [ACCEPTED GENUS 276829:C47P3 nidx=null]
Pseudacrochordiceras
 - Pseudacrochordiceras Tozer, 1994 [ACCEPTED GENUS 272972:BSLWF nidx=null]
 + Pseudacrochordiceras [ACCEPTED GENUS 276829:C47PH nidx=null]
Pseudagathiceras
 - Pseudagathiceras Schindewolf, 1931 [ACCEPTED GENUS 272972:BSLWG nidx=null]
 + Pseudagathiceras [ACCEPTED GENUS 276829:C47PP nidx=null]
Pseudaptetoceras
 - Pseudaptetoceras (Géczy, 1966) [ACCEPTED GENUS 272972:BSLWJ nidx=null]
 + Pseudaptetoceras [ACCEPTED GENUS 276829:C47RP nidx=null]
Pseudaspenites
 - Pseudaspenites Spath, 1934 [ACCEPTED GENUS 272972:BSLWM nidx=null]
 + Pseudaspenites [ACCEPTED GENUS 276829:C47S8 nidx=null]
Pseudaspidites
 - Pseudaspidites Spath, 1934 [ACCEPTED GENUS 272972:BSLWN nidx=null]
 + Pseudaspidites [ACCEPTED GENUS 276829:C47S9 nidx=null]
Pseudaspidoceras
 - Pseudaspidoceras (Hyatt, 1903) [ACCEPTED GENUS 272972:BSLWP nidx=null]
 + Pseudaspidoceras [ACCEPTED GENUS 276829:C47SB nidx=null]
Pseudhelicoceras
 - Pseudhelicoceras Spath, 1922 [ACCEPTED GENUS 272972:BSLWR nidx=null]
 + Pseudhelicoceras [ACCEPTED GENUS 276829:C47ZB nidx=null]
Pseudoaspidoceras
 - Pseudoaspidoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSLWS nidx=null]
 + Pseudoaspidoceras [ACCEPTED GENUS 276829:C484Z nidx=null]
Pseudoaustraliceras
 - Pseudoaustraliceras Kakabadze, 1981 [ACCEPTED GENUS 272972:BSLWV nidx=null]
 + Pseudoaustraliceras [ACCEPTED GENUS 276829:C4858 nidx=null]
Pseudobaculites
 - Pseudobaculites Cobban, 1952 [ACCEPTED GENUS 272972:BSLWW nidx=null]
 + Pseudobaculites [ACCEPTED GENUS 276829:C485B nidx=null]
 + Pseudobaculites Maync, 1965 [SYNONYM GENUS 276829:C485C nidx=null parent=BZCKY]
Pseudobelus
 - Pseudobelus de Blainville, 1827 [ACCEPTED GENUS 272972:BSLWX nidx=null]
 + Pseudobelus [ACCEPTED GENUS 276829:C486K nidx=null]
Pseudobrancoceras
 - Pseudobrancoceras Kennedy, 2004 [ACCEPTED GENUS 272972:BSLWZ nidx=null]
 + Pseudobrancoceras [ACCEPTED GENUS 276829:C489L nidx=null]
Pseudocadoceras
 - Pseudocadoceras (Buckman, 1918) [ACCEPTED GENUS 272972:BSLX2 nidx=null]
 + Pseudocadoceras [ACCEPTED GENUS 276829:C48BJ nidx=null]
Pseudocampylites
 - Pseudocampylites Jeannet, 1951 [ACCEPTED GENUS 272972:BSLX4 nidx=null]
 + Pseudocampylites [ACCEPTED GENUS 276829:C48C6 nidx=null]
Pseudocardioceras
 - Pseudocardioceras Tozer, 1971 [ACCEPTED GENUS 272972:BSLX5 nidx=null]
 + Pseudocardioceras [ACCEPTED GENUS 276829:C48D5 nidx=null]
Pseudoceltites
 - Pseudoceltites Hyatt, 1900 [ACCEPTED GENUS 272972:BSLX6 nidx=null]
 + Pseudoceltites [ACCEPTED GENUS 276829:C48F3 nidx=null]
Pseudocheylidae
 - Pseudocheylidae [ACCEPTED FAMILY 272972:F86 nidx=null]
 + Pseudocheylidae Oudemans, 1909 [ACCEPTED FAMILY 276829:BV64B nidx=null]
Pseudoclymenia
 - Pseudoclymenia Frech, 1897 [ACCEPTED GENUS 272972:BSLXG nidx=null]
 + Pseudoclymenia [ACCEPTED GENUS 276829:C48LY nidx=null]
Pseudoclymeniidae
 - Pseudoclymeniidae Becker, 1993 [ACCEPTED FAMILY 272972:BSH8X nidx=null]
 + Pseudoclymeniidae [ACCEPTED FAMILY 276829:BX5ZK nidx=null]
Pseudocrioceras
 - Pseudocrioceras Spath, 1924 [ACCEPTED GENUS 272972:BSLXL nidx=null]
 + Pseudocrioceras [ACCEPTED GENUS 276829:C48R3 nidx=null]
Pseudodanubites
 - Pseudodanubites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSLXM nidx=null]
 + Pseudodanubites [ACCEPTED GENUS 276829:C48VB nidx=null]
Pseudoemilites
 - Pseudoemilites Leonova, 1988 [ACCEPTED GENUS 272972:BSLXP nidx=null]
 + Pseudoemilites [ACCEPTED GENUS 276829:C48XJ nidx=null]
Pseudofidelites
 - Pseudofidelites Klug, 2002 [ACCEPTED GENUS 272972:BSLXR nidx=null]
 + Pseudofidelites [ACCEPTED GENUS 276829:C492F nidx=null]
Pseudoflemingites
 - Pseudoflemingites Spath, 1930 [ACCEPTED GENUS 272972:BSLXS nidx=null]
 + Pseudoflemingites [ACCEPTED GENUS 276829:C492N nidx=null]
Pseudofoordites
 - Pseudofoordites Bogoslovsky, 1959 [ACCEPTED GENUS 272972:BSLXT nidx=null]
 + Pseudofoordites [ACCEPTED GENUS 276829:C492R nidx=null]
Pseudogastrioceras
 - Pseudogastrioceras Spath, 1936 [ACCEPTED GENUS 272972:BSLXW nidx=null]
 + Pseudogastrioceras [ACCEPTED GENUS 276829:C494G nidx=null]
Pseudogastroplites
 - Pseudogastroplites Jeletzky, 1980 [ACCEPTED GENUS 272972:BSLXX nidx=null]
 + Pseudogastroplites [ACCEPTED GENUS 276829:C494Q nidx=null]
Pseudogregoryceras
 - Pseudogregoryceras Jeannet, 1951 [ACCEPTED GENUS 272972:BSLXY nidx=null]
 + Pseudogregoryceras [ACCEPTED GENUS 276829:C49BG nidx=null]
Pseudohaloritaceae
 - Pseudohaloritaceae Ruzhencev, 1957 [ACCEPTED SUPERFAMILY 272972:BSGWG nidx=null]
 + Pseudohaloritaceae [ACCEPTED SUPERFAMILY 276829:BWXW6 nidx=null]
Pseudohalorites
 - Pseudohalorites Yabe, 1928 [ACCEPTED GENUS 272972:BSLY2 nidx=null]
 + Pseudohalorites [ACCEPTED GENUS 276829:C49CD nidx=null]
Pseudohaloritidae
 - Pseudohaloritidae Ruzhencev, 1957 [ACCEPTED FAMILY 272972:BSH8Y nidx=null]
 + Pseudohaloritidae [ACCEPTED FAMILY 276829:BX628 nidx=null]
Pseudohaploceras
 - Pseudohaploceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSLY3 nidx=null]
 + Pseudohaploceras [ACCEPTED GENUS 276829:C49CT nidx=null]
Pseudohollandites
 - Pseudohollandites Krystyn & Tatzreiter, 1991 [ACCEPTED GENUS 272972:BSLY5 nidx=null]
 + Pseudohollandites [ACCEPTED GENUS 276829:C49GQ nidx=null]
Pseudokeyserlingites
 - Pseudokeyserlingites Bucher, 1989 [ACCEPTED GENUS 272972:BSLY6 nidx=null]
 + Pseudokeyserlingites [ACCEPTED GENUS 276829:C49RV nidx=null]
Pseudokossmaticeras
 - Pseudokossmaticeras Spath, 1922 [ACCEPTED GENUS 272972:BSLY7 nidx=null]
 + Pseudokossmaticeras [ACCEPTED GENUS 276829:C49T5 nidx=null]
Pseudokymatites
 - Pseudokymatites Spath, 1934 [ACCEPTED GENUS 272972:BSLY8 nidx=null]
 + Pseudokymatites [ACCEPTED GENUS 276829:C49V2 nidx=null]
Pseudolissoceras
 - Pseudolissoceras Spath, 1925 [ACCEPTED GENUS 272972:BSLYC nidx=null]
 + Pseudolissoceras [ACCEPTED GENUS 276829:C4B7J nidx=null]
Pseudoneocomites
 - Pseudoneocomites Hoedemaeker, 1982 [ACCEPTED GENUS 272972:BSLYF nidx=null]
 + Pseudoneocomites [ACCEPTED GENUS 276829:C4BHY nidx=null]
Pseudoneoptychites
 - Pseudoneoptychites Leanza, 1967 [ACCEPTED GENUS 272972:BSLYG nidx=null]
 + Pseudoneoptychites [ACCEPTED GENUS 276829:C4BJ8 nidx=null]
Pseudoosterella
 - Pseudoosterella Spath, 1924 [ACCEPTED GENUS 272972:BSLYJ nidx=null]
 + Pseudoosterella [ACCEPTED GENUS 276829:C4BLN nidx=null]
Pseudoparalegoceras
 - Pseudoparalegoceras Miller, 1934 [ACCEPTED GENUS 272972:BSLYK nidx=null]
 + Pseudoparalegoceras [ACCEPTED GENUS 276829:C4BNG nidx=null]
Pseudoparalegoceratidae
 - Pseudoparalegoceratidae Librovitch, 1957 [ACCEPTED FAMILY 272972:BSH8Z nidx=null]
 + Pseudoparalegoceratidae [ACCEPTED FAMILY 276829:BX633 nidx=null]
Pseudophassus
 - Pseudophassus Pfitzner & Gaede, 1937 [SYNONYM GENUS 272972:93P95 nidx=null parent=927H9]
 + Pseudophassus Pfitzner, 1914 [ACCEPTED GENUS 276829:C633Q nidx=null]
Pseudophyllites
 - Pseudophyllites Kossmat, 1895 [ACCEPTED GENUS 272972:BSLYM nidx=null]
 + Pseudophyllites [ACCEPTED GENUS 276829:C4BWG nidx=null]
Pseudoprobeloceras
 - Pseudoprobeloceras Bensaïd, 1974 [ACCEPTED GENUS 272972:BSLYN nidx=null]
 + Pseudoprobeloceras [ACCEPTED GENUS 276829:C4C9J nidx=null]
Pseudopronorites
 - Pseudopronorites Nassichuk, 1975 [ACCEPTED GENUS 272972:BSLYP nidx=null]
 + Pseudopronorites [ACCEPTED GENUS 276829:C4CB2 nidx=null]
Pseudoproptychites
 - Pseudoproptychites Bando, 1981 [ACCEPTED GENUS 272972:BSLYQ nidx=null]
 + Pseudoproptychites [ACCEPTED GENUS 276829:C4CB6 nidx=null]
Pseudoprosphingites
 - Pseudoprosphingites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSLYR nidx=null]
 + Pseudoprosphingites [ACCEPTED GENUS 276829:C4CB9 nidx=null]
Pseudopulchellia
 - Pseudopulchellia Imlay, 1961 [ACCEPTED GENUS 272972:BSLYS nidx=null]
 + Pseudopulchellia [ACCEPTED GENUS 276829:C4CC9 nidx=null]
Pseudosageceras
 - Pseudosageceras Diener, 1895 [ACCEPTED GENUS 272972:BSLYT nidx=null]
 + Pseudosageceras [ACCEPTED GENUS 276829:C4CHB nidx=null]
Pseudosaynella
 - Pseudosaynella Spath, 1923 [ACCEPTED GENUS 272972:BSLYV nidx=null]
 + Pseudosaynella [ACCEPTED GENUS 276829:C4CHR nidx=null]
Pseudoschistoceras
 - Pseudoschistoceras Teichert, 1944 [ACCEPTED GENUS 272972:BSLYW nidx=null]
 + Pseudoschistoceras [ACCEPTED GENUS 276829:C4CHZ nidx=null]
Pseudoschloenbachia
 - Pseudoschloenbachia Spath, 1921 [ACCEPTED GENUS 272972:BSLYX nidx=null]
 + Pseudoschloenbachia [ACCEPTED GENUS 276829:C4CJ7 nidx=null]
 + Pseudoschloenbachia [ACCEPTED SUBGENUS 276829:C4CJ8 nidx=null]
Pseudosilesites
 - Pseudosilesites Egoian, 1969 [ACCEPTED GENUS 272972:BSLYZ nidx=null]
 + Pseudosilesites [ACCEPTED GENUS 276829:C4CLG nidx=null]
Pseudosirenites
 - Pseudosirenites Arthaber, 1911 [ACCEPTED GENUS 272972:BSLZ2 nidx=null]
 + Pseudosirenites [ACCEPTED GENUS 276829:C4CLS nidx=null]
Pseudoskirroceras
 - Pseudoskirroceras Wiedenmayer, 1980 [ACCEPTED GENUS 272972:BSLZ3 nidx=null]
 + Pseudoskirroceras [ACCEPTED GENUS 276829:C4CLV nidx=null]
Pseudostephanites
 - Pseudostephanites Zhao & Liang, 1965 [ACCEPTED GENUS 272972:BSLZ4 nidx=null]
 + Pseudostephanites [ACCEPTED GENUS 276829:C4CPF nidx=null]
Pseudosubplanites
 - Pseudosubplanites Le Hegarat, 1973 [ACCEPTED GENUS 272972:BSLZ5 nidx=null]
 + Pseudosubplanites [ACCEPTED GENUS 276829:C4CR2 nidx=null]
Pseudosvalbardiceras
 - Pseudosvalbardiceras Dagis & Ermakova, 1988 [ACCEPTED GENUS 272972:BSLZ6 nidx=null]
 + Pseudosvalbardiceras [ACCEPTED GENUS 276829:C4CRF nidx=null]
Pseudosverdrupites
 - Pseudosverdrupites Kutygin, 1996 [ACCEPTED GENUS 272972:BSLZ7 nidx=null]
 + Pseudosverdrupites [ACCEPTED GENUS 276829:C4CRG nidx=null]
Pseudothetidites
 - Pseudothetidites Jeannet, 1958 [ACCEPTED GENUS 272972:BSLZ8 nidx=null]
 + Pseudothetidites [ACCEPTED GENUS 276829:C4CZN nidx=null]
Pseudothurmannia
 - Pseudothurmannia (Spath, 1923) [ACCEPTED GENUS 272972:BSLZ9 nidx=null]
 + Pseudothurmannia [ACCEPTED GENUS 276829:C4D3S nidx=null]
Pseudotirolites
 - Pseudotirolites Sun, 1933 [ACCEPTED GENUS 272972:BSLZD nidx=null]
 + Pseudotirolites [ACCEPTED GENUS 276829:C4D5J nidx=null]
Pseudotirolitidae
 - Pseudotirolitidae Zhao, 1965 [ACCEPTED FAMILY 272972:BSH95 nidx=null]
 + Pseudotirolitidae [ACCEPTED FAMILY 276829:BX649 nidx=null]
Pseudotissotia
 - Pseudotissotia Peron, 1887 [ACCEPTED GENUS 272972:BSLZF nidx=null]
 + Pseudotissotia [ACCEPTED GENUS 276829:C4D5L nidx=null]
Pseudotissotidae
 - Pseudotissotidae (Hyatt, 1903) [ACCEPTED FAMILY 272972:BSH96 nidx=null]
 + Pseudotissotidae [ACCEPTED FAMILY 276829:BX64B nidx=null]
Pseudotoceras
 - Pseudotoceras Ruzhencev, 1962 [ACCEPTED GENUS 272972:BSLZH nidx=null]
 + Pseudotoceras [ACCEPTED GENUS 276829:C4D5M nidx=null]
Pseudovaldedorsella
 - Pseudovaldedorsella Cecca et al., 1998 [ACCEPTED GENUS 272972:BSLZL nidx=null]
 + Pseudovaldedorsella [ACCEPTED GENUS 276829:C4DB2 nidx=null]
Pseudovascoceras
 - Pseudovascoceras Zaborski, 1996 [ACCEPTED GENUS 272972:BSLZM nidx=null]
 + Pseudovascoceras [ACCEPTED GENUS 276829:C4DB5 nidx=null]
Pseudovidrioceras
 - Pseudovidrioceras Ruzhencev, 1936 [ACCEPTED GENUS 272972:BSLZN nidx=null]
 + Pseudovidrioceras [ACCEPTED GENUS 276829:C4DBR nidx=null]
Pseudoxybeloceras
 - Pseudoxybeloceras Wright & Matsumoto, 1954 [ACCEPTED GENUS 272972:BSLZP nidx=null]
 + Pseudoxybeloceras [ACCEPTED GENUS 276829:C4DCS nidx=null]
 + Pseudoxybeloceras [ACCEPTED SUBGENUS 276829:C4DCT nidx=null]
Pseuduptonia
 - Pseuduptonia (Bremer, 1965) [ACCEPTED GENUS 272972:BSLZR nidx=null]
 + Pseuduptonia [ACCEPTED GENUS 276829:C4DF2 nidx=null]
Psilocerataceae
 - Psilocerataceae Hyatt, 1867 [ACCEPTED SUPERFAMILY 272972:BSGWH nidx=null]
 + Psilocerataceae [ACCEPTED SUPERFAMILY 276829:BWXWF nidx=null]
Psiloceratidae
 - Psiloceratidae Hyatt, 1867 [ACCEPTED FAMILY 272972:BSH97 nidx=null]
 + Psiloceratidae [ACCEPTED FAMILY 276829:BX64V nidx=null]
Psilocladiscites
 - Psilocladiscites Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSLZT nidx=null]
 + Psilocladiscites [ACCEPTED GENUS 276829:C4DG2 nidx=null]
Psilosturia
 - Psilosturia Diener, 1916 [ACCEPTED GENUS 272972:BSLZV nidx=null]
 + Psilosturia [ACCEPTED GENUS 276829:C4DHB nidx=null]
Pterocallis (Pterocallis) albida
 - Pterocallis (Pterocallis) albida Börner, 1940 [ACCEPTED SPECIES 272972:78L7V nidx=null]
 + Pterocallis (Pterocallis) albida Börner, 1940 [ACCEPTED SPECIES 276829:CVTTG nidx=null]
Pterocallis (Pterocallis) montana
 - Pterocallis (Pterocallis) montana (Higuchi, 1972) [ACCEPTED SPECIES 272972:BSXW2 nidx=null]
 + Pterocallis (Pterocallis) montana (Higuchi, 1972) [ACCEPTED SPECIES 276829:D32CW nidx=null]
Pteronemobius (Pteronemobius) rufipes
 - Pteronemobius (Pteronemobius) rufipes Chopard, 1969 [ACCEPTED SPECIES 272972:4PZP3 nidx=null]
 + Pteronemobius (Pteronemobius) rufipes Chopard, 1969 [ACCEPTED SPECIES 276829:D33YZ nidx=null]
Pterosirenites
 - Pterosirenites Tozer, 1980 [ACCEPTED GENUS 272972:BSM23 nidx=null]
 + Pterosirenites [ACCEPTED GENUS 276829:C4DQG nidx=null]
Pterotropia
 - Pterotropia W.F.Hillebr. [SYNONYM UNRANKED 272972:8WK9B nidx=null parent=8W2LV]
 + Pterotropia W.F.Hillebr. [SYNONYM UNRANKED 276829:C4DQT nidx=null parent=8W2LV]
Ptychitaceae
 - Ptychitaceae Mojsisovics, 1882 [ACCEPTED SUPERFAMILY 272972:BSGWJ nidx=null]
 + Ptychitaceae [ACCEPTED SUPERFAMILY 276829:BWXWJ nidx=null]
Ptychites
 - Ptychites Mojsisovics, 1875 [ACCEPTED GENUS 272972:BSM24 nidx=null]
 + Ptychites [ACCEPTED GENUS 276829:C4DWB nidx=null]
Ptychites domatus
 - Ptychites domatus (Hauer, 1850) [SYNONYM SPECIES 272972:BSY2R nidx=null parent=BT6RJ]
 + Ptychites domatus Silberling & Tozer, 1968 [ACCEPTED SPECIES 276829:D38CH nidx=null]
Ptychitidae
 - Ptychitidae von Mojsisovics, 1882 [ACCEPTED SUBFAMILY 272972:BSH98 nidx=null]
 + Ptychitidae [ACCEPTED FAMILY 276829:BX677 nidx=null]
Ptychoceras
 - Ptychoceras (d'Orbigny, 1842) [ACCEPTED GENUS 272972:BSM25 nidx=null]
 + Ptychoceras [ACCEPTED GENUS 276829:C4DWK nidx=null]
Ptychoceratidae
 - Ptychoceratidae (Meek, 1876) [ACCEPTED FAMILY 272972:BSH99 nidx=null]
 + Ptychoceratidae [ACCEPTED FAMILY 276829:BX67B nidx=null]
Ptychoceratoidea
 - Ptychoceratoidea Gill, 1871 [ACCEPTED SUPERFAMILY 272972:BSGWK nidx=null]
 + Ptychoceratoidea [ACCEPTED SUPERFAMILY 276829:BWXWK nidx=null]
Ptychophylloceras
 - Ptychophylloceras Spath, 1927 [ACCEPTED GENUS 272972:BSM29 nidx=null]
 + Ptychophylloceras [ACCEPTED GENUS 276829:C4DXW nidx=null]
Pulchelliaceae
 - Pulchelliaceae Douvillé, 1890 [ACCEPTED SUPERFAMILY 272972:BSGWL nidx=null]
 + Pulchelliaceae [ACCEPTED SUPERFAMILY 276829:BWXWS nidx=null]
Pulchelliidae
 - Pulchelliidae Hyatt, 1903 [ACCEPTED FAMILY 272972:BSH9B nidx=null]
 + Pulchelliidae [ACCEPTED FAMILY 276829:BX67N nidx=null]
Punjabites
 - Punjabites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSM2C nidx=null]
 + Punjabites [ACCEPTED GENUS 276829:C4F64 nidx=null]
Puzosia
 - Puzosia (Bayle, 1878) [ACCEPTED GENUS 272972:BSM2D nidx=null]
 + Puzosia [ACCEPTED GENUS 276829:C4FB9 nidx=null]
 + Puzosia [ACCEPTED SUBGENUS 276829:C4FBB nidx=null]
Puzosigella
 - Puzosigella Casey, 1954 [SYNONYM GENUS 272972:BSM2K nidx=null parent=BSKKW]
 + Puzosigella [ACCEPTED GENUS 276829:C4FBC nidx=null]
Pygopleurus viridisuturatus
 - Pygopleurus viridisuturatus (Reitter, 1903) [ACCEPTED SPECIES 272972:B4K3T nidx=null]
 + Pygopleurus viridisuturatus (Reitter, 1903) [ACCEPTED SPECIES 276829:D397L nidx=null]
Qianjiangoceras
 - Qianjiangoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSM2M nidx=null]
 + Qianjiangoceras [ACCEPTED GENUS 276829:C4FQS nidx=null]
Qinglongites
 - Qinglongites Zheng, 1981 [ACCEPTED GENUS 272972:BSM2N nidx=null]
 + Qinglongites [ACCEPTED GENUS 276829:C4FQY nidx=null]
Quasicravenoceras
 - Quasicravenoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSM2P nidx=null]
 + Quasicravenoceras [ACCEPTED GENUS 276829:C4FSQ nidx=null]
Quinnites
 - Quinnites Manger & Saunders, 1980 [ACCEPTED GENUS 272972:BSM2Q nidx=null]
 + Quinnites [ACCEPTED GENUS 276829:C4FW6 nidx=null]
Quitmaniceras
 - Quitmaniceras Powell, 1963 [ACCEPTED GENUS 272972:BSM2R nidx=null]
 + Quitmaniceras [ACCEPTED GENUS 276829:C4FWP nidx=null]
Radioceras
 - Radioceras Waterhouse, 1996 [ACCEPTED GENUS 272972:BSM2S nidx=null]
 + Radioceras [ACCEPTED GENUS 276829:C4FZW nidx=null]
Radioceras kraffti
 - Radioceras kraffti (Spath, 1930) [SYNONYM SPECIES 272972:BSY8F nidx=null parent=BSTMN]
 + Radioceras kraffti (Spath, 1934) [ACCEPTED SPECIES 276829:D3QPD nidx=null]
Radioprionites
 - Radioprionites Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSM2T nidx=null]
 + Radioprionites [ACCEPTED GENUS 276829:C4G2Y nidx=null]
Radstockiceras
 - Radstockiceras Buckman, 1918 [ACCEPTED GENUS 272972:BSM2V nidx=null]
 + Radstockiceras [ACCEPTED GENUS 276829:C4G4G nidx=null]
Ramosites
 - Ramosites Ruzhencev & Bogoslovskaya, 1969 [ACCEPTED GENUS 272972:BSM2W nidx=null]
 + Ramosites [ACCEPTED GENUS 276829:C4G8R nidx=null]
Ramositidae
 - Ramositidae Ruzhencev & Bogoslovskaya, 1969 [ACCEPTED FAMILY 272972:BSH9H nidx=null]
 + Ramositidae [ACCEPTED FAMILY 276829:BX6B5 nidx=null]
Raspailites
 - Raspailites Jeannet, 1951 [ACCEPTED GENUS 272972:BSM2Y nidx=null]
 + Raspailites [ACCEPTED GENUS 276829:C4GF8 nidx=null]
Rectoclymeniidae
 - Rectoclymeniidae Schindewolf, 1923 [ACCEPTED FAMILY 272972:BSH9K nidx=null]
 + Rectoclymeniidae [ACCEPTED FAMILY 276829:BX6CN nidx=null]
Reesidites
 - Reesidites Wright & Matsumoto, 1954 [ACCEPTED GENUS 272972:BSM37 nidx=null]
 + Reesidites [ACCEPTED GENUS 276829:C4H77 nidx=null]
Reginaites
 - Reginaites Reyment, 1957 [ACCEPTED GENUS 272972:BSM38 nidx=null]
 + Reginaites [ACCEPTED GENUS 276829:C4H9Y nidx=null]
Reiflingites
 - Reiflingites Arthaber, 1896 [ACCEPTED GENUS 272972:BSM39 nidx=null]
 + Reiflingites [ACCEPTED GENUS 276829:C4HJ3 nidx=null]
Reiflingites gosaviensis
 - Reiflingites gosaviensis (von Mojsisovics, 1878) [SYNONYM SPECIES 272972:BSY9G nidx=null parent=BSQPR]
 + Reiflingites gosaviensis (Mojsisovics, 1882) [ACCEPTED SPECIES 276829:D3ZFP nidx=null]
Reineckeiidae
 - Reineckeiidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSH9L nidx=null]
 + Reineckeiidae [ACCEPTED FAMILY 276829:BX6D2 nidx=null]
Renites
 - Renites Bogoslovsky, 1969 [ACCEPTED GENUS 272972:BSM3B nidx=null]
 + Renites [ACCEPTED GENUS 276829:C4HPG nidx=null]
Reticuloceras
 - Reticuloceras Bisat, 1924 [ACCEPTED GENUS 272972:BSM3C nidx=null]
 + Reticuloceras [ACCEPTED GENUS 276829:C4HWY nidx=null]
Reticuloceratidae
 - Reticuloceratidae Librovitch, 1957 [ACCEPTED FAMILY 272972:BSH9M nidx=null]
 + Reticuloceratidae [ACCEPTED FAMILY 276829:BX6DG nidx=null]
Retites
 - Retites McCaleb, 1964 [ACCEPTED GENUS 272972:BSM3D nidx=null]
 + Retites [ACCEPTED GENUS 276829:C4HY3 nidx=null]
Retrotornoceras
 - Retrotornoceras House, 2002 [ACCEPTED GENUS 272972:BSM3F nidx=null]
 + Retrotornoceras [ACCEPTED GENUS 276829:C4HYX nidx=null]
Reynesoceras
 - Reynesoceras Spath, 1936 [ACCEPTED GENUS 272972:BSM3G nidx=null]
 + Reynesoceras [ACCEPTED GENUS 276829:C4J35 nidx=null]
Reynesocoeloceras
 - Reynesocoeloceras Geczy, 1976 [ACCEPTED GENUS 272972:BSM3H nidx=null]
 + Reynesocoeloceras [ACCEPTED GENUS 276829:C4J36 nidx=null]
Rhabdoceras
 - Rhabdoceras Hauer, 1860 [ACCEPTED GENUS 272972:BSM3J nidx=null]
 + Rhabdoceras [ACCEPTED GENUS 276829:C4J4Y nidx=null]
Rhabdoceratidae
 - Rhabdoceratidae Tozer, 1979 [ACCEPTED FAMILY 272972:BSH9P nidx=null]
 + Rhabdoceratidae [ACCEPTED FAMILY 276829:BX6F4 nidx=null]
Rhabdotheca
 - Rhabdotheca Cass. [SYNONYM UNRANKED 272972:5TFPM nidx=null parent=62X83]
 + Rhabdotheca Cass. [SYNONYM UNRANKED 276829:D7WSS nidx=null parent=62X83]
Rhacophyllites
 - Rhacophyllites (Zittel, 1884) [ACCEPTED GENUS 272972:BSM3L nidx=null]
 + Rhacophyllites [ACCEPTED GENUS 276829:C4J9G nidx=null]
Rhaeboceras
 - Rhaeboceras Meek, 1876 [ACCEPTED GENUS 272972:BSM3P nidx=null]
 - Rhaeboceras Buckman, 1899 [SYNONYM GENUS 272972:BSM3Q nidx=null parent=BT3T6]
 + Rhaeboceras [ACCEPTED GENUS 276829:C4JC2 nidx=null]
Rhamphidoceras
 - Rhamphidoceras Kennedy & Cobban, 1990 [ACCEPTED GENUS 272972:BSM3S nidx=null]
 + Rhamphidoceras [ACCEPTED GENUS 276829:C4JH8 nidx=null]
Rheochara
 - Rheochara Mulsant & Rey, 1875 [SYNONYM GENUS 272972:BSM3T nidx=null parent=9JBP5]
 + Rheochara Mulsant & Rey, 1874 [SYNONYM GENUS 276829:C4JP9 nidx=null parent=9JBP5]
 + Rheochara Mulsant & Rey, 1875 [SYNONYM GENUS 276829:C4JPB nidx=null parent=9JBP5]
Rherisites
 - Rherisites Klug, 2001 [ACCEPTED GENUS 272972:BSM3W nidx=null]
 + Rherisites [ACCEPTED GENUS 276829:C4JQG nidx=null]
Rhopalomyzus (Rhopalomyzus) hissarica
 - Rhopalomyzus (Rhopalomyzus) hissarica [ACCEPTED SPECIES 272972:BHJQZ nidx=null]
 + Rhopalomyzus (Rhopalomyzus) hissarica [ACCEPTED SPECIES 276829:D42TW nidx=null]
Rhymmoceras
 - Rhymmoceras Ruzhencev, 1958 [ACCEPTED GENUS 272972:BSM44 nidx=null]
 + Rhymmoceras [ACCEPTED GENUS 276829:C4KRR nidx=null]
Rhymmoceratidae
 - Rhymmoceratidae Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED FAMILY 272972:BSH9T nidx=null]
 + Rhymmoceratidae [ACCEPTED FAMILY 276829:BX6KZ nidx=null]
Riasanella
 - Riasanella Mitta, 2011 [ACCEPTED GENUS 272972:BSM4D nidx=null]
 + Riasanella [ACCEPTED GENUS 276829:C4L3Y nidx=null]
Richardsonites
 - Richardsonites (Elias, 1956) [ACCEPTED GENUS 272972:BSM4F nidx=null]
 + Richardsonites [ACCEPTED GENUS 276829:C4L58 nidx=null]
Richeiceras
 - Richeiceras Jeannet, 1951 [ACCEPTED GENUS 272972:BSM4H nidx=null]
 + Richeiceras [ACCEPTED GENUS 276829:C4L5B nidx=null]
 + Richeiceras [ACCEPTED SUBGENUS 276829:C4L5C nidx=null]
Richterella
 - Richterella Avram, 1974 [ACCEPTED GENUS 272972:BSM4K nidx=null]
 + Richterella [ACCEPTED GENUS 276829:C4L5Y nidx=null]
Rieberites
 - Rieberites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSM4M nidx=null]
 + Rieberites [ACCEPTED GENUS 276829:C4L6S nidx=null]
Rieppelites
 - Rieppelites Monnet & Bucher, 2005 [ACCEPTED GENUS 272972:BSM4N nidx=null]
 + Rieppelites [ACCEPTED GENUS 276829:C4L72 nidx=null]
Ringnesiceras
 - Ringnesiceras Kemper & Jeletzky, 1979 [SYNONYM GENUS 272972:BSM4Q nidx=null parent=BTK8Y]
 + Ringnesiceras [ACCEPTED GENUS 276829:C4L9D nidx=null]
 + Ringnesiceras [ACCEPTED SUBGENUS 276829:C4L9F nidx=null]
Roadoceras
 - Roadoceras Zhou, 1985 [ACCEPTED GENUS 272972:BSM4V nidx=null]
 + Roadoceras [ACCEPTED GENUS 276829:C4LDK nidx=null]
Robinsonites
 - Robinsonites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSM4W nidx=null]
 + Robinsonites [ACCEPTED GENUS 276829:C4LF7 nidx=null]
Rodighieroites
 - Rodighieroites Company, 1987 [ACCEPTED GENUS 272972:BSM4X nidx=null]
 + Rodighieroites [ACCEPTED GENUS 276829:C4LH7 nidx=null]
Roemeroceras
 - Roemeroceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSM4Y nidx=null]
 + Roemeroceras [ACCEPTED GENUS 276829:C4LHM nidx=null]
Rohillites
 - Rohillites Waterhouse, 1996 [ACCEPTED GENUS 272972:BSM52 nidx=null]
 + Rohillites [ACCEPTED GENUS 276829:C4LJC nidx=null]
Rollerites
 - Rollerites Jeannet, 1951 [ACCEPTED GENUS 272972:BSM53 nidx=null]
 + Rollerites [ACCEPTED GENUS 276829:C4LJQ nidx=null]
Rollieria
 - Rollieria Jeannet, 1951 [ACCEPTED GENUS 272972:BSM54 nidx=null]
 + Rollieria [ACCEPTED GENUS 276829:C4LJR nidx=null]
 + Rollieria Cossmann, 1920 [ACCEPTED GENUS 276829:C4LJS nidx=null]
Roloboceras
 - Roloboceras Casey, 1954 [ACCEPTED GENUS 272972:BSM55 nidx=null]
 + Roloboceras [ACCEPTED GENUS 276829:C4LJX nidx=null]
Romaniceras
 - Romaniceras (Spath, 1923) [ACCEPTED GENUS 272972:BSM56 nidx=null]
 + Romaniceras [ACCEPTED GENUS 276829:C4LKK nidx=null]
 + Romaniceras [ACCEPTED SUBGENUS 276829:C4LKL nidx=null]
Romanites
 - Romanites Kittl, 1908 [ACCEPTED GENUS 272972:BSM59 nidx=null]
 + Romanites [ACCEPTED GENUS 276829:C4LKP nidx=null]
Rongjiangoceras
 - Rongjiangoceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSM5B nidx=null]
 + Rongjiangoceras [ACCEPTED GENUS 276829:C4LLW nidx=null]
Rossiceras
 - Rossiceras Fantini Sestini, 1994 [ACCEPTED GENUS 272972:BSM5F nidx=null]
 + Rossiceras [ACCEPTED GENUS 276829:C4LQR nidx=null]
Rossiensiceras
 - Rossiensiceras Gerard & Contaut, 1936 [ACCEPTED GENUS 272972:BSM5G nidx=null]
 + Rossiensiceras [ACCEPTED GENUS 276829:C4LQT nidx=null]
Rotodiscoceras
 - Rotodiscoceras Zhao & Liang, 1966 [ACCEPTED GENUS 272972:BSM5L nidx=null]
 + Rotodiscoceras [ACCEPTED GENUS 276829:C4LYP nidx=null]
Rotopericyclidae
 - Rotopericyclidae Korn et al., 2010 [ACCEPTED FAMILY 272972:BSH9Z nidx=null]
 + Rotopericyclidae [ACCEPTED FAMILY 276829:BX6NG nidx=null]
Rotopericyclus
 - Rotopericyclus Turner, 1948 [ACCEPTED GENUS 272972:BSM5M nidx=null]
 + Rotopericyclus [ACCEPTED GENUS 276829:C4LYT nidx=null]
 + Rotopericyclus [ACCEPTED SUBGENUS 276829:C4LYV nidx=null]
Ruanites
 - Ruanites Yatskov, 1990 [ACCEPTED GENUS 272972:BSM5P nidx=null]
 + Ruanites [ACCEPTED GENUS 276829:C4M6F nidx=null]
Rudolftruempyiceras
 - Rudolftruempyiceras Guex & Bylund, 2010 [ACCEPTED GENUS 272972:BSM5R nidx=null]
 + Rudolftruempyiceras [ACCEPTED GENUS 276829:C4M8J nidx=null]
Sabaliceras
 - Sabaliceras Yang & Yang, 1992 [ACCEPTED GENUS 272972:BSM5S nidx=null]
 + Sabaliceras [ACCEPTED GENUS 276829:C4MML nidx=null]
Sabaudiella
 - Sabaudiella Vasicek & Hoedemaeker, 2003 [ACCEPTED GENUS 272972:BSM5T nidx=null]
 + Sabaudiella [ACCEPTED GENUS 276829:C4MMP nidx=null]
Sabbaiceras
 - Sabbaiceras Avram & Gradinaru, 1993 [ACCEPTED GENUS 272972:BSM5V nidx=null]
 + Sabbaiceras [ACCEPTED GENUS 276829:C4MMR nidx=null]
Safraites
 - Safraites Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSM5W nidx=null]
 + Safraites [ACCEPTED GENUS 276829:C4MX2 nidx=null]
Sageceras
 - Sageceras Mojsisovics, 1873 [ACCEPTED GENUS 272972:BSM5X nidx=null]
 + Sageceras [ACCEPTED GENUS 276829:C4MZB nidx=null]
Sagecerataceae
 - Sagecerataceae Hyatt, 1884 [ACCEPTED SUPERFAMILY 272972:BSGWM nidx=null]
 + Sagecerataceae [ACCEPTED SUPERFAMILY 276829:BWXXR nidx=null]
Sageceratidae
 - Sageceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSHB3 nidx=null]
 + Sageceratidae [ACCEPTED FAMILY 276829:BX6QC nidx=null]
Sagenites
 - Sagenites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSM5Y nidx=null]
 + Sagenites [ACCEPTED GENUS 276829:C4MZR nidx=null]
Saghalinites
 - Saghalinites (Wright & Matsumoto, 1954) [ACCEPTED GENUS 272972:BSM5Z nidx=null]
 + Saghalinites [ACCEPTED GENUS 276829:C4MZT nidx=null]
Sakhaites
 - Sakhaites Vozin, 1972 [ACCEPTED GENUS 272972:BSM64 nidx=null]
 + Sakhaites [ACCEPTED GENUS 276829:C4N65 nidx=null]
Sakhaitoides
 - Sakhaitoides Ermakova, 1999 [ACCEPTED GENUS 272972:BSM65 nidx=null]
 + Sakhaitoides [ACCEPTED GENUS 276829:C4N66 nidx=null]
Sakhaitoides verkhoyanicus
 - Sakhaitoides verkhoyanicus (Bychkov et al., 1976) [SYNONYM SPECIES 272972:BSYGS nidx=null parent=BSW86]
 + Sakhaitoides verkhoyanicus (Popov, 1976) [ACCEPTED SPECIES 276829:D4VRN nidx=null]
Sakmarites
 - Sakmarites Ruzhencev, 1936 [ACCEPTED GENUS 272972:BSM66 nidx=null]
 + Sakmarites [ACCEPTED GENUS 276829:C4N6L nidx=null]
Salaziceras
 - Salaziceras Breistroffer, 1936 [ACCEPTED GENUS 272972:BSM67 nidx=null]
 + Salaziceras [ACCEPTED GENUS 276829:C4NBB nidx=null]
 + Salaziceras [ACCEPTED SUBGENUS 276829:C4NBC nidx=null]
Salinites
 - Salinites (Cantu-Chapa, 1968) [ACCEPTED GENUS 272972:BSM69 nidx=null]
 + Salinites [ACCEPTED GENUS 276829:C4NFH nidx=null]
Salpingoteuthididae
 - Salpingoteuthididae Doyle, 1992 [ACCEPTED FAMILY 272972:BSHB4 nidx=null]
 + Salpingoteuthididae [ACCEPTED FAMILY 276829:BX6QN nidx=null]
Sandbergeroceras
 - Sandbergeroceras Hyatt, 1894 [ACCEPTED GENUS 272972:BSM6C nidx=null]
 + Sandbergeroceras [ACCEPTED GENUS 276829:C4NTB nidx=null]
Sandlingites
 - Sandlingites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSM6D nidx=null]
 + Sandlingites [ACCEPTED GENUS 276829:C4NTW nidx=null]
Sandlingitidae
 - Sandlingitidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSHB5 nidx=null]
 + Sandlingitidae [ACCEPTED FAMILY 276829:BX6R4 nidx=null]
Sangzhites
 - Sangzhites Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSM6F nidx=null]
 + Sangzhites [ACCEPTED GENUS 276829:C4NVN nidx=null]
Sanyangites
 - Sanyangites Zhao et al., 1978 [ACCEPTED GENUS 272972:BSM6G nidx=null]
 + Sanyangites [ACCEPTED GENUS 276829:C4NXT nidx=null]
Sarasinella
 - Sarasinella (Uhlig, 1905) [ACCEPTED GENUS 272972:BSM6H nidx=null]
 + Sarasinella [ACCEPTED GENUS 276829:C4P2X nidx=null]
Saxoceras
 - Saxoceras Lange, 1924 [ACCEPTED GENUS 272972:BSM6L nidx=null]
 + Saxoceras [ACCEPTED GENUS 276829:C4PK4 nidx=null]
Scalarites
 - Scalarites Wright & Matsumoto, 1954 [ACCEPTED GENUS 272972:BSM6M nidx=null]
 + Scalarites [ACCEPTED GENUS 276829:C4PMP nidx=null]
Scaphitaceae
 - Scaphitaceae Gill, 1871 [ACCEPTED SUPERFAMILY 272972:BSFXN nidx=null]
 + Scaphitaceae [ACCEPTED SUPERFAMILY 276829:BV9MM nidx=null]
Scaphites
 - Scaphites (Parkinson, 1811) [ACCEPTED GENUS 272972:BSFZY nidx=null]
 + Scaphites [ACCEPTED GENUS 276829:BVCMW nidx=null]
 + Scaphites [ACCEPTED SUBGENUS 276829:BVCMX nidx=null]
Scaphitidae
 - Scaphitidae Gill, 1871 [ACCEPTED FAMILY 272972:BSFY7 nidx=null]
 + Scaphitidae [ACCEPTED FAMILY 276829:BV9YM nidx=null]
Scarabaeus smaragdinus
 - Scarabaeus smaragdinus Gmelin, 1790 [AMBIGUOUS_SYNONYM SPECIES 272972:7YY8V nidx=null parent=7ZB4F]
 + Scarabaeus smaragdinus Gmelin, 1790 [SYNONYM SPECIES 276829:4V2HH nidx=null parent=7ZB4F]
Schartymites
 - Schartymites (Librovitch, 1939) [ACCEPTED GENUS 272972:BSM6Q nidx=null]
 + Schartymites [ACCEPTED GENUS 276829:C4PXC nidx=null]
Schindewolfoceras
 - Schindewolfoceras Miller, 1938 [ACCEPTED GENUS 272972:BSM6T nidx=null]
 + Schindewolfoceras [ACCEPTED GENUS 276829:C4Q29 nidx=null]
Schinia
 - Schinia Hübner, 1818 [ACCEPTED GENUS 272972:93PBV nidx=null]
 + Schinia Hübner, 1818 [ACCEPTED GENUS 276829:DFGPQ nidx=null]
Schistoceras
 - Schistoceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSM6V nidx=null]
 + Schistoceras [ACCEPTED GENUS 276829:C4Q3D nidx=null]
Schistocerataceae
 - Schistocerataceae Schmidt, 1929 [ACCEPTED SUPERFAMILY 272972:BSGWN nidx=null]
 + Schistocerataceae [ACCEPTED SUPERFAMILY 276829:BWXXW nidx=null]
Schistoceratidae
 - Schistoceratidae Schmidt, 1929 [ACCEPTED FAMILY 272972:BSHB6 nidx=null]
 + Schistoceratidae [ACCEPTED FAMILY 276829:BX6TH nidx=null]
Schizaphis (Schizaphis) mali
 - Schizaphis (Schizaphis) mali [ACCEPTED SPECIES 272972:79VCB nidx=null]
 + Schizaphis (Schizaphis) mali [ACCEPTED SPECIES 276829:D575L nidx=null]
Schizoloboceras
 - Schizoloboceras Zhao et al., 1978 [ACCEPTED GENUS 272972:BSM6Y nidx=null]
 + Schizoloboceras [ACCEPTED GENUS 276829:C4Q8M nidx=null]
Schloenbachia
 - Schloenbachia (Neumayr, 1875) [ACCEPTED GENUS 272972:BSM72 nidx=null]
 + Schloenbachia [ACCEPTED GENUS 276829:C4QDF nidx=null]
Schloenbachiidae
 - Schloenbachiidae Parona & Bonarelli, 1897 [ACCEPTED FAMILY 272972:BSHB8 nidx=null]
 + Schloenbachiidae [ACCEPTED FAMILY 276829:BX6VJ nidx=null]
Schlotheimia
 - Schlotheimia Bayle, 1878 [ACCEPTED GENUS 272972:BSG4T nidx=null]
 + Schlotheimia [ACCEPTED GENUS 276829:BVGX6 nidx=null]
Schlotheimiidae
 - Schlotheimiidae Spath, 1923 [ACCEPTED FAMILY 272972:BSHB9 nidx=null]
 + Schlotheimiidae [ACCEPTED FAMILY 276829:BX6VL nidx=null]
Schlueterella
 - Schlueterella (Wiedmann, 1962) [SYNONYM GENUS 272972:BSN6G nidx=null parent=BSN6H]
 + Schlueterella [ACCEPTED SUBGENUS 276829:C63CS nidx=null]
Schneidia
 - Schneidia (Atrops, 1982) [SYNONYM GENUS 272972:BSN6K nidx=null parent=BSN6L]
 + Schneidia [ACCEPTED SUBGENUS 276829:C63CT nidx=null]
Schreinbachites
 - Schreinbachites Bloos, 1994 [ACCEPTED GENUS 272972:BSM74 nidx=null]
 + Schreinbachites [ACCEPTED GENUS 276829:C4QGX nidx=null]
Schreyerites
 - Schreyerites Tatzreiter & Balini, 1993 [ACCEPTED GENUS 272972:BSM75 nidx=null]
 + Schreyerites [ACCEPTED GENUS 276829:C4QH5 nidx=null]
Schwegleria
 - Schwegleria Riegraf, 1980 [ACCEPTED GENUS 272972:BSM76 nidx=null]
 + Schwegleria [ACCEPTED GENUS 276829:C4QKF nidx=null]
Sciponoceras
 - Sciponoceras Hyatt, 1894 [ACCEPTED GENUS 272972:BSM7F nidx=null]
 + Sciponoceras [ACCEPTED GENUS 276829:C4QPF nidx=null]
Seimkanites
 - Seimkanites Konstantinov, 1999 [ACCEPTED GENUS 272972:BSM7H nidx=null]
 + Seimkanites [ACCEPTED GENUS 276829:C4R6K nidx=null]
Sellaclymenia
 - Sellaclymenia Hyatt, 1884 [ACCEPTED GENUS 272972:BSM7J nidx=null]
 + Sellaclymenia [ACCEPTED GENUS 276829:C4R9F nidx=null]
Sellaclymeniidae
 - Sellaclymeniidae Schindewolf, 1923 [ACCEPTED FAMILY 272972:BSHBB nidx=null]
 + Sellaclymeniidae [ACCEPTED FAMILY 276829:BX6XZ nidx=null]
Sellagoniatites
 - Sellagoniatites House, 1963 [ACCEPTED GENUS 272972:BSM7K nidx=null]
 + Sellagoniatites [ACCEPTED GENUS 276829:C4R9J nidx=null]
Sellanarcestes
 - Sellanarcestes Schindewolf, 1933 [ACCEPTED GENUS 272972:BSM7L nidx=null]
 + Sellanarcestes [ACCEPTED GENUS 276829:C4R9K nidx=null]
Selwoodites
 - Selwoodites Becker, 2002 [ACCEPTED GENUS 272972:BSM7M nidx=null]
 + Selwoodites [ACCEPTED GENUS 276829:C4RB3 nidx=null]
Semenoviceras
 - Semenoviceras Wright et al., 1996 [ACCEPTED GENUS 272972:BSM7N nidx=null]
 + Semenoviceras [ACCEPTED GENUS 276829:C4RD3 nidx=null]
 + Semenoviceras [ACCEPTED SUBGENUS 276829:C4RD4 nidx=null]
Semibeyrichites
 - Semibeyrichites Krystyn & Tatzreiter, 1991 [SYNONYM GENUS 272972:BSM7S nidx=null parent=BSKHG]
 + Semibeyrichites [ACCEPTED GENUS 276829:C4RDD nidx=null]
Senecio cruentus
 - Senecio cruentus (L'Hér.) DC. [SYNONYM SPECIES 272972:B4K9C nidx=null parent=76SRS]
 + Senecio cruentus (L'Hér.) DC. [SYNONYM SPECIES 276829:C4SVM nidx=null parent=76SRS]
Serramanticoceras
 - Serramanticoceras Becker et al., 1993 [ACCEPTED GENUS 272972:BSM7W nidx=null]
 + Serramanticoceras [ACCEPTED GENUS 276829:C4RWG nidx=null]
Shamaraites
 - Shamaraites Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSM85 nidx=null]
 + Shamaraites [ACCEPTED GENUS 276829:C4S6G nidx=null]
Shangganites
 - Shangganites Brühwiler et al., 2008 [ACCEPTED GENUS 272972:BSM86 nidx=null]
 + Shangganites [ACCEPTED GENUS 276829:C4S6M nidx=null]
Shangraoceras
 - Shangraoceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSM87 nidx=null]
 + Shangraoceras [ACCEPTED GENUS 276829:C4S6T nidx=null]
Shangsilites
 - Shangsilites Sheng, 1989 [ACCEPTED GENUS 272972:BSM88 nidx=null]
 + Shangsilites [ACCEPTED GENUS 276829:C4S6V nidx=null]
Sharpeiceras
 - Sharpeiceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSM89 nidx=null]
 + Sharpeiceras [ACCEPTED GENUS 276829:C4S79 nidx=null]
Shasticrioceras
 - Shasticrioceras (Anderson, 1938) [ACCEPTED GENUS 272972:BSM8B nidx=null]
 + Shasticrioceras [ACCEPTED GENUS 276829:C4S7C nidx=null]
Shastites
 - Shastites (Hyatt & Smith, 1905) [SYNONYM GENUS 272972:BSN6N nidx=null parent=BSN6Q]
 + Shastites [ACCEPTED SUBGENUS 276829:C63FS nidx=null]
Shengoceras
 - Shengoceras Zhao, 1955 [ACCEPTED GENUS 272972:BSM8D nidx=null]
 + Shengoceras [ACCEPTED GENUS 276829:C4S7S nidx=null]
Shevyrevites
 - Shevyrevites Teichert & Kummel, 1973 [ACCEPTED GENUS 272972:BSM8G nidx=null]
 + Shevyrevites [ACCEPTED GENUS 276829:C4S86 nidx=null]
Shigetaceras
 - Shigetaceras Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSM8H nidx=null]
 + Shigetaceras [ACCEPTED GENUS 276829:C4S8S nidx=null]
Shimenites
 - Shimenites Xu, 1977 [ACCEPTED GENUS 272972:BSM8J nidx=null]
 + Shimenites [ACCEPTED GENUS 276829:C4S9F nidx=null]
Shouchangoceras
 - Shouchangoceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSM8L nidx=null]
 + Shouchangoceras [ACCEPTED GENUS 276829:C4SCB nidx=null]
Shumarditaceae
 - Shumarditaceae Plummer & Scott, 1937 [ACCEPTED SUPERFAMILY 272972:BSGWP nidx=null]
 + Shumarditaceae [ACCEPTED SUPERFAMILY 276829:BWXYR nidx=null]
Shumardites
 - Shumardites Smith, 1903 [ACCEPTED GENUS 272972:BSM8M nidx=null]
 + Shumardites [ACCEPTED GENUS 276829:C4SCR nidx=null]
Shumarditidae
 - Shumarditidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSHBC nidx=null]
 + Shumarditidae [ACCEPTED FAMILY 276829:BX723 nidx=null]
Siberiptychites
 - Siberiptychites (Kemper & Jeletzky, 1977) [ACCEPTED GENUS 272972:BSM8N nidx=null]
 + Siberiptychites [ACCEPTED GENUS 276829:C4SG2 nidx=null]
 + Siberiptychites [ACCEPTED SUBGENUS 276829:C4SG3 nidx=null]
Sibirites
 - Sibirites Mojsisovics, 1886 [ACCEPTED GENUS 272972:BSM8R nidx=null]
 + Sibirites [ACCEPTED GENUS 276829:C4SGD nidx=null]
Sibirites grambergi
 - Sibirites grambergi (Popov, 1961) [ACCEPTED SPECIES 272972:BSYPM nidx=null]
 + Sibirites grambergi (Popov, 1981) [SYNONYM SPECIES 276829:D5R4B nidx=null parent=CWZRB]
Sibiritidae
 - Sibiritidae Mojsisovics, 1896 [ACCEPTED FAMILY 272972:BSHBD nidx=null]
 + Sibiritidae [ACCEPTED FAMILY 276829:BX727 nidx=null]
Sicanites
 - Sicanites Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSM8T nidx=null]
 + Sicanites [ACCEPTED GENUS 276829:C4SHR nidx=null]
Silberlingeria
 - Silberlingeria Waterhouse, 1999 [ACCEPTED GENUS 272972:BSM9D nidx=null]
 + Silberlingeria [ACCEPTED GENUS 276829:C4SS6 nidx=null]
Silberlingites
 - Silberlingites Bucher, 1989 [ACCEPTED GENUS 272972:BSM9F nidx=null]
 + Silberlingites [ACCEPTED GENUS 276829:C4SS9 nidx=null]
Silberlingitoides
 - Silberlingitoides Monnet & Bucher, 2006 [ACCEPTED GENUS 272972:BSM9G nidx=null]
 + Silberlingitoides [ACCEPTED GENUS 276829:C4SSB nidx=null]
Silenticeras
 - Silenticeras (McLearn, 1930) [ACCEPTED GENUS 272972:BSM9H nidx=null]
 + Silenticeras [ACCEPTED GENUS 276829:C4SSQ nidx=null]
Silesites
 - Silesites Uhlig, 1883 [ACCEPTED GENUS 272972:BSM9L nidx=null]
 + Silesites [ACCEPTED GENUS 276829:C4ST3 nidx=null]
Silesitidae
 - Silesitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHBF nidx=null]
 + Silesitidae [ACCEPTED FAMILY 276829:BX72X nidx=null]
Simancyloceras
 - Simancyloceras Kemper, 1973 [ACCEPTED GENUS 272972:BSM9M nidx=null]
 + Simancyloceras [ACCEPTED GENUS 276829:C4SVC nidx=null]
Simbirskites
 - Simbirskites (Pavlow, 1891) [ACCEPTED GENUS 272972:BSM9N nidx=null]
 + Simbirskites [ACCEPTED GENUS 276829:C4SVF nidx=null]
Simicheiloceras
 - Simicheiloceras Becker, 1993 [ACCEPTED GENUS 272972:BSM9R nidx=null]
 + Simicheiloceras [ACCEPTED GENUS 276829:C4SVL nidx=null]
Simoceratidae
 - Simoceratidae Spath, 1924 [ACCEPTED FAMILY 272972:BSHBG nidx=null]
 + Simoceratidae [ACCEPTED FAMILY 276829:BX73D nidx=null]
Simonyceras
 - Simonyceras Wiedmann, 1970 [ACCEPTED GENUS 272972:BSM9S nidx=null]
 + Simonyceras [ACCEPTED GENUS 276829:C4SWC nidx=null]
Sinoceltites
 - Sinoceltites Zhao & Liang, 1974 [ACCEPTED GENUS 272972:BSM9T nidx=null]
 + Sinoceltites [ACCEPTED GENUS 276829:C4T2R nidx=null]
Sinomeginoceras
 - Sinomeginoceras Balini & Zou, 2015 [ACCEPTED GENUS 272972:BSM9V nidx=null]
 + Sinomeginoceras [ACCEPTED GENUS 276829:C4T3V nidx=null]
Sinuiceras
 - Sinuiceras Venturi & Ferri, 2001 [ACCEPTED GENUS 272972:BSM9W nidx=null]
 + Sinuiceras [ACCEPTED GENUS 276829:C4T6N nidx=null]
Sinuiceratidae
 - Sinuiceratidae Venturi et al., 2005 [ACCEPTED FAMILY 272972:BSHBH nidx=null]
 + Sinuiceratidae [ACCEPTED FAMILY 276829:BX743 nidx=null]
Sinzowiella
 - Sinzowiella Stoyanow, 1949 [SYNONYM GENUS 272972:BSM9X nidx=null parent=BSKG7]
 + Sinzowiella [ACCEPTED GENUS 276829:C4T7C nidx=null]
Sirenites
 - Sirenites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSMB3 nidx=null]
 + Sirenites [ACCEPTED GENUS 276829:C4TGJ nidx=null]
Sirenotibetites
 - Sirenotibetites Tozer, 1994 [ACCEPTED GENUS 272972:BSMB5 nidx=null]
 + Sirenotibetites [ACCEPTED GENUS 276829:C4TGT nidx=null]
Sirenotrachyceras
 - Sirenotrachyceras Krystyn, 1978 [ACCEPTED GENUS 272972:BSMB6 nidx=null]
 + Sirenotrachyceras [ACCEPTED GENUS 276829:C4TGX nidx=null]
Sitobion (Sitobion) congolense
 - Sitobion (Sitobion) congolense (Doncaster & Hille Ris Lambers, 1956) [ACCEPTED SPECIES 272972:BSYQT nidx=null]
 + Sitobion (Sitobion) congolense (Doncaster & Hille Ris Lambers, 1956) [ACCEPTED SPECIES 276829:D5WRD nidx=null]
Sizilites
 - Sizilites Toumansky, 1937 [ACCEPTED GENUS 272972:BSMB8 nidx=null]
 + Sizilites [ACCEPTED GENUS 276829:C4TNH nidx=null]
Sminthurus repandus
 - Sminthurus repandus Ågren, 1903 [AMBIGUOUS_SYNONYM SPECIES 272972:4XXDB nidx=null parent=355HW]
 + Sminthurus repandus Ågren, 1903 [AMBIGUOUS_SYNONYM SPECIES 276829:D5ZL2 nidx=null parent=355HW]
 + Sminthurus repandus Ågren, 1902 [AMBIGUOUS_SYNONYM SPECIES 276829:D5ZL3 nidx=null parent=355JD]
Sobolewia
 - Sobolewia Wedekind, 1918 [ACCEPTED GENUS 272972:BSMBB nidx=null]
 + Sobolewia [ACCEPTED GENUS 276829:C4TTT nidx=null]
Sobolewiidae
 - Sobolewiidae House, 1989 [ACCEPTED FAMILY 272972:BSHBJ nidx=null]
 + Sobolewiidae [ACCEPTED FAMILY 276829:BX766 nidx=null]
Sohlites
 - Sohlites Imlay, 1967 [ACCEPTED GENUS 272972:BSMBD nidx=null]
 + Sohlites [ACCEPTED GENUS 276829:C4TY5 nidx=null]
Solenoceras
 - Solenoceras Conrad, 1860 [ACCEPTED GENUS 272972:BSMBF nidx=null]
 + Solenoceras [ACCEPTED GENUS 276829:C4V2J nidx=null]
Solgerites
 - Solgerites (Reeside, 1932) [ACCEPTED GENUS 272972:BSMBH nidx=null]
 + Solgerites [ACCEPTED GENUS 276829:C4V38 nidx=null]
Somoholitaceae
 - Somoholitaceae Ruzhencev, 1938 [ACCEPTED SUPERFAMILY 272972:BSGWQ nidx=null]
 + Somoholitaceae [ACCEPTED SUPERFAMILY 276829:BWXYY nidx=null]
Somoholites
 - Somoholites Ruzhencev, 1938 [ACCEPTED GENUS 272972:BSMBL nidx=null]
 + Somoholites [ACCEPTED GENUS 276829:C4VDD nidx=null]
Somoholitidae
 - Somoholitidae Ruzhencev, 1938 [ACCEPTED FAMILY 272972:BSHBK nidx=null]
 + Somoholitidae [ACCEPTED FAMILY 276829:BX77D nidx=null]
Sonneratia
 - Sonneratia Bayle, 1878 [ACCEPTED GENUS 272972:BSG4W nidx=null]
 + Sonneratia [ACCEPTED GENUS 276829:BVH6H nidx=null]
Sonninia
 - Sonninia Douvillé, 1879 [ACCEPTED GENUS 272972:BSMBN nidx=null]
 + Sonninia [ACCEPTED GENUS 276829:C4VFV nidx=null]
Sonniniidae
 - Sonniniidae Buckman, 1892 [ACCEPTED FAMILY 272972:BSHBL nidx=null]
 + Sonniniidae [ACCEPTED FAMILY 276829:BX77N nidx=null]
Sornayites
 - Sornayites Wiedmann, 1962 [ACCEPTED GENUS 272972:BSMBQ nidx=null]
 + Sornayites [ACCEPTED GENUS 276829:C4VJ3 nidx=null]
Sosioceras
 - Sosioceras Frest et al., 1981 [ACCEPTED GENUS 272972:BSMBR nidx=null]
 + Sosioceras [ACCEPTED GENUS 276829:C4VMD nidx=null]
Sosiocrimites
 - Sosiocrimites (Ruzhentsev, 1950) [ACCEPTED GENUS 272972:BSMBS nidx=null]
 + Sosiocrimites [ACCEPTED GENUS 276829:C4VMH nidx=null]
Sowerbyceras
 - Sowerbyceras (Parona & Bonarelli, 1895) [ACCEPTED GENUS 272972:BSMBV nidx=null]
 + Sowerbyceras [ACCEPTED GENUS 276829:C4VRS nidx=null]
Spathites
 - Spathites Kummel & Decker, 1954 [ACCEPTED GENUS 272972:BSMBY nidx=null]
 + Spathites [ACCEPTED GENUS 276829:C4VZZ nidx=null]
Speetoniceras
 - Speetoniceras Spath, 1924 [ACCEPTED GENUS 272972:BSMC2 nidx=null]
 + Speetoniceras [ACCEPTED GENUS 276829:C4W3S nidx=null]
Sphaeroceratidae
 - Sphaeroceratidae Buckman, 1920 [ACCEPTED FAMILY 272972:BSHBN nidx=null]
 + Sphaeroceratidae [ACCEPTED FAMILY 276829:BX79K nidx=null]
Sphaerocladiscites
 - Sphaerocladiscites Popov, 1961 [ACCEPTED GENUS 272972:BSMC7 nidx=null]
 + Sphaerocladiscites [ACCEPTED GENUS 276829:C4WN5 nidx=null]
Sphaerocladiscites omolonensis
 - Sphaerocladiscites omolonensis Bychkov et al., 1976 [ACCEPTED SPECIES 272972:BSYTR nidx=null]
 + Sphaerocladiscites omolonensis Bytschkov, 1976 [ACCEPTED SPECIES 276829:D67NH nidx=null]
Sphaeromanticoceras
 - Sphaeromanticoceras Clausen, 1971 [ACCEPTED GENUS 272972:BSMCD nidx=null]
 + Sphaeromanticoceras [ACCEPTED GENUS 276829:C4WQ3 nidx=null]
Sphenoacanthites
 - Sphenoacanthites Venturi et al., 2007 [ACCEPTED GENUS 272972:BSMCH nidx=null]
 + Sphenoacanthites [ACCEPTED GENUS 276829:C4WV2 nidx=null]
Sphenoclymeniidae
 - Sphenoclymeniidae Korn, 1992 [ACCEPTED FAMILY 272972:BSHBP nidx=null]
 + Sphenoclymeniidae [ACCEPTED FAMILY 276829:BX7BH nidx=null]
Sphenodiscidae
 - Sphenodiscidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHBQ nidx=null]
 + Sphenodiscidae [ACCEPTED FAMILY 276829:BX7BJ nidx=null]
Sphenodiscus
 - Sphenodiscus Meek, 1871 [ACCEPTED GENUS 272972:BSMCJ nidx=null]
 + Sphenodiscus [ACCEPTED GENUS 276829:C4WVJ nidx=null]
Sphingites
 - Sphingites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSMCL nidx=null]
 + Sphingites [ACCEPTED GENUS 276829:C4WX7 nidx=null]
Sphingitidae
 - Sphingitidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSHBR nidx=null]
 + Sphingitidae [ACCEPTED FAMILY 276829:BX7BS nidx=null]
Sphingonotus (Neosphingonotus) canariensis
 - Sphingonotus (Neosphingonotus) canariensis Saussure, 1884 [ACCEPTED SPECIES 272972:BSWZ6 nidx=null]
 + Sphingonotus (Neosphingonotus) canariensis Saussure, 1884 [ACCEPTED SPECIES 276829:CYFRH nidx=null]
Sphingonotus (Neosphingonotus) pictus
 - Sphingonotus (Neosphingonotus) pictus Werner, 1905 [ACCEPTED SPECIES 272972:4YZQ7 nidx=null]
 + Sphingonotus (Neosphingonotus) pictus Werner, 1905 [ACCEPTED SPECIES 276829:CYFTW nidx=null]
Sphingonotus (Sphingonotus) satrapes
 - Sphingonotus (Sphingonotus) satrapes Saussure, 1884 [ACCEPTED SPECIES 272972:6YYJG nidx=null]
 + Sphingonotus (Sphingonotus) satrapes Saussure, 1884 [ACCEPTED SPECIES 276829:CYFVH nidx=null]
Sphingonotus (Sphingonotus) savignyi
 - Sphingonotus (Sphingonotus) savignyi Saussure, 1884 [ACCEPTED SPECIES 272972:4YZTB nidx=null]
 + Sphingonotus (Sphingonotus) savignyi Saussure, 1884 [ACCEPTED SPECIES 276829:CYFVM nidx=null]
Spirocerataceae
 - Spirocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGWR nidx=null]
 + Spirocerataceae [ACCEPTED SUPERFAMILY 276829:BWXZ6 nidx=null]
Spiroceratidae
 - Spiroceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHBS nidx=null]
 + Spiroceratidae [ACCEPTED FAMILY 276829:BX7CS nidx=null]
Spirogmoceras
 - Spirogmoceras Silberling, 1956 [ACCEPTED GENUS 272972:BSMCS nidx=null]
 + Spirogmoceras [ACCEPTED GENUS 276829:C4XPY nidx=null]
Spirolegoceras
 - Spirolegoceras Miller et al., 1957 [ACCEPTED GENUS 272972:BSMCT nidx=null]
 + Spirolegoceras [ACCEPTED GENUS 276829:C4XR8 nidx=null]
Spirolegoceratidae
 - Spirolegoceratidae Nassichuk, 1970 [ACCEPTED FAMILY 272972:BSHBT nidx=null]
 + Spirolegoceratidae [ACCEPTED FAMILY 276829:BX7CX nidx=null]
Spiroxybeloceras
 - Spiroxybeloceras Kennedy & Cobban, 1999 [ACCEPTED GENUS 272972:BSMCV nidx=null]
 + Spiroxybeloceras [ACCEPTED GENUS 276829:C4Y2R nidx=null]
Spitidiscus
 - Spitidiscus Kilian, 1910 [ACCEPTED GENUS 272972:BSMCZ nidx=null]
 + Spitidiscus [ACCEPTED GENUS 276829:C4Y3L nidx=null]
Sporadoceras
 - Sporadoceras Hyatt, 1884 [ACCEPTED GENUS 272972:BSMD5 nidx=null]
 + Sporadoceras [ACCEPTED GENUS 276829:C4YC9 nidx=null]
 + Sporadoceras [ACCEPTED SUBGENUS 276829:C4YCB nidx=null]
Sporadoceratidae
 - Sporadoceratidae Miller & Furnish, 1957 [ACCEPTED FAMILY 272972:BSHBX nidx=null]
 + Sporadoceratidae [ACCEPTED FAMILY 276829:BX7FL nidx=null]
Stacheites
 - Stacheites Kittl, 1903 [ACCEPTED GENUS 272972:BSMD7 nidx=null]
 + Stacheites [ACCEPTED GENUS 276829:C4YRP nidx=null]
Stacheoceras
 - Stacheoceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSG26 nidx=null]
 + Stacheoceras [ACCEPTED GENUS 276829:BVCPW nidx=null]
Stannakhites
 - Stannakhites Vavilov, 1978 [ACCEPTED GENUS 272972:BSMD9 nidx=null]
 + Stannakhites [ACCEPTED GENUS 276829:C4Z57 nidx=null]
Steckites
 - Steckites Brühwiler et al., 2012 [ACCEPTED GENUS 272972:BSMDB nidx=null]
 + Steckites [ACCEPTED GENUS 276829:C4Z8L nidx=null]
Steinmannites
 - Steinmannites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSMDH nidx=null]
 + Steinmannites [ACCEPTED GENUS 276829:C4ZDK nidx=null]
Steinmannitidae
 - Steinmannitidae Tozer, 1994 [ACCEPTED FAMILY 272972:BSHBY nidx=null]
 + Steinmannitidae [ACCEPTED FAMILY 276829:BX7GJ nidx=null]
Stelckiceras
 - Stelckiceras Jeletzky, 1980 [ACCEPTED GENUS 272972:BSMDL nidx=null]
 + Stelckiceras [ACCEPTED GENUS 276829:C4ZDS nidx=null]
Stenarcestes
 - Stenarcestes (von Mojsisovics, 1895) [ACCEPTED GENUS 272972:BSMDN nidx=null]
 + Stenarcestes [ACCEPTED GENUS 276829:C4ZJ4 nidx=null]
Stenocadoceras
 - Stenocadoceras (Imlay, 1953) [ACCEPTED GENUS 272972:BSMDQ nidx=null]
 + Stenocadoceras [ACCEPTED GENUS 276829:C4ZMJ nidx=null]
Stenodontes (Mallodon) molarius
 - Stenodontes (Mallodon) molarius [AMBIGUOUS_SYNONYM SPECIES 272972:BSYYC nidx=null parent=BL35H]
 + Stenodontes (Mallodon) molarius [AMBIGUOUS_SYNONYM SPECIES 276829:D6P9X nidx=null parent=BK73Y]
 + Stenodontes (Mallodon) molarius [AMBIGUOUS_SYNONYM SPECIES 276829:D6P9Y nidx=null parent=BL35H]
 + Stenodontes (Mallodon) molarius [AMBIGUOUS_SYNONYM SPECIES 276829:D6PB3 nidx=null parent=6QSV6]
Stenoglaphyrites
 - Stenoglaphyrites Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSMDT nidx=null]
 + Stenoglaphyrites [ACCEPTED GENUS 276829:C4ZQG nidx=null]
Stenolobulites
 - Stenolobulites Mikesh et al., 1988 [ACCEPTED GENUS 272972:BSMDV nidx=null]
 + Stenolobulites [ACCEPTED GENUS 276829:C4ZS9 nidx=null]
Stenopharciceras
 - Stenopharciceras Montesinos & Henn, 1986 [ACCEPTED GENUS 272972:BSMDX nidx=null]
 + Stenopharciceras [ACCEPTED GENUS 276829:C4ZVJ nidx=null]
Stenophyllites
 - Stenophyllites Tozer, 1994 [ACCEPTED GENUS 272972:BSMDY nidx=null]
 + Stenophyllites [ACCEPTED GENUS 276829:C4ZW6 nidx=null]
Stenopis
 - Stenopis Packard, 1864 [SYNONYM GENUS 272972:BSDQK nidx=null parent=92NBJ]
 + Stenopis Pagenstecher, 1909 [SYNONYM GENUS 276829:94PJD nidx=null parent=92NBJ]
Stenopopanoceras
 - Stenopopanoceras Popov, 1961 [ACCEPTED GENUS 272972:BSMDZ nidx=null]
 + Stenopopanoceras [ACCEPTED GENUS 276829:C4ZWV nidx=null]
Stenopronorites
 - Stenopronorites Schindewolf, 1934 [ACCEPTED GENUS 272972:BSMF2 nidx=null]
 + Stenopronorites [ACCEPTED GENUS 276829:C4ZWZ nidx=null]
Stephanites
 - Stephanites Waagen, 1895 [ACCEPTED GENUS 272972:BSMF4 nidx=null]
 + Stephanites [ACCEPTED GENUS 276829:C4ZZY nidx=null]
Stephanoceras
 - Stephanoceras (Waagen, 1869) [ACCEPTED GENUS 272972:BSMF5 nidx=null]
 + Stephanoceras [ACCEPTED GENUS 276829:C5223 nidx=null]
Stephanocerataceae
 - Stephanocerataceae Newmayr, 1875 [ACCEPTED SUPERFAMILY 272972:BSGWS nidx=null]
 + Stephanocerataceae [ACCEPTED SUPERFAMILY 276829:BWXZF nidx=null]
Stephanoceratidae
 - Stephanoceratidae Neumayr, 1875 [ACCEPTED FAMILY 272972:BSHBZ nidx=null]
 + Stephanoceratidae [ACCEPTED FAMILY 276829:BX7HZ nidx=null]
Stephanosphinctes
 - Stephanosphinctes Sandoval & Westermann, 1986 [ACCEPTED GENUS 272972:BSMFC nidx=null]
 + Stephanosphinctes [ACCEPTED GENUS 276829:C522S nidx=null]
Stikinoceras
 - Stikinoceras McLearn, 1930 [ACCEPTED GENUS 272972:BSMFJ nidx=null]
 + Stikinoceras [ACCEPTED GENUS 276829:C52HH nidx=null]
Stoliczkaia
 - Stoliczkaia Neumayr, 1875 [ACCEPTED GENUS 272972:BSMFL nidx=null]
 + Stoliczkaia [ACCEPTED GENUS 276829:C52QK nidx=null]
 + Stoliczkaia [ACCEPTED SUBGENUS 276829:C52QL nidx=null]
Stolleyites
 - Stolleyites Archipov, 1974 [ACCEPTED GENUS 272972:BSMFP nidx=null]
 + Stolleyites [ACCEPTED GENUS 276829:C52R5 nidx=null]
Stotticeras
 - Stotticeras Jeletzky, 1980 [ACCEPTED GENUS 272972:BSMFS nidx=null]
 + Stotticeras [ACCEPTED GENUS 276829:C538Q nidx=null]
Stoyanowites
 - Stoyanowites Korn, 2014 [ACCEPTED GENUS 272972:BSMFT nidx=null]
 + Stoyanowites [ACCEPTED GENUS 276829:C5398 nidx=null]
Striatosirenites
 - Striatosirenites Popov, 1961 [ACCEPTED GENUS 272972:BSMFV nidx=null]
 + Striatosirenites [ACCEPTED GENUS 276829:C5439 nidx=null]
Strigoceras
 - Strigoceras Quenstedt, 1886 [ACCEPTED GENUS 272972:BSMFY nidx=null]
 + Strigoceras [ACCEPTED GENUS 276829:C544X nidx=null]
Strigoceratidae
 - Strigoceratidae Buckman, 1914 [ACCEPTED FAMILY 272972:BSHC5 nidx=null]
 + Strigoceratidae [ACCEPTED FAMILY 276829:BX7L7 nidx=null]
Strigogoniatites
 - Strigogoniatites Spath, 1934 [ACCEPTED GENUS 272972:BSMG2 nidx=null]
 + Strigogoniatites [ACCEPTED GENUS 276829:C544Z nidx=null]
Sturia
 - Sturia von Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSMG5 nidx=null]
 + Sturia [ACCEPTED GENUS 276829:C54HB nidx=null]
Sturiidae
 - Sturiidae Kipsarova, 1958 [ACCEPTED FAMILY 272972:BSHC6 nidx=null]
 + Sturiidae [ACCEPTED FAMILY 276829:BX7LN nidx=null]
Styrites
 - Styrites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSMG6 nidx=null]
 + Styrites [ACCEPTED GENUS 276829:C54SJ nidx=null]
Suakites
 - Suakites Leonova, 1982 [ACCEPTED GENUS 272972:BSMG7 nidx=null]
 + Suakites [ACCEPTED GENUS 276829:C54SM nidx=null]
Subalbanites
 - Subalbanites Zakharov, 1978 [ACCEPTED GENUS 272972:BSMG8 nidx=null]
 + Subalbanites [ACCEPTED GENUS 276829:C54SZ nidx=null]
Subalpinites
 - Subalpinites Mazenot, 1939 [ACCEPTED GENUS 272972:BSMG9 nidx=null]
 + Subalpinites [ACCEPTED GENUS 276829:C54T4 nidx=null]
Subanarcestes
 - Subanarcestes Schindewolf, 1933 [ACCEPTED GENUS 272972:BSMGB nidx=null]
 + Subanarcestes [ACCEPTED GENUS 276829:C54T9 nidx=null]
Subaspinoceras
 - Subaspinoceras Thomel et al., 1987 [ACCEPTED GENUS 272972:BSMGC nidx=null]
 + Subaspinoceras [ACCEPTED GENUS 276829:C54TK nidx=null]
Subastieria
 - Subastieria (Spath, 1923) [SYNONYM GENUS 272972:BSMGD nidx=null parent=BSL7Q]
 + Subastieria [ACCEPTED GENUS 276829:C54TM nidx=null]
Subbalhaeceras
 - Subbalhaeceras Zakharov & Moussavi Abnavi, 2013 [ACCEPTED GENUS 272972:BSMGG nidx=null]
 + Subbalhaeceras [ACCEPTED GENUS 276829:C54TP nidx=null]
Subcolumbites
 - Subcolumbites Spath, 1930 [ACCEPTED GENUS 272972:BSMGH nidx=null]
 + Subcolumbites [ACCEPTED GENUS 276829:C54V8 nidx=null]
Subcraspedites
 - Subcraspedites Spath, 1924 [ACCEPTED GENUS 272972:BSMGJ nidx=null]
 + Subcraspedites [ACCEPTED GENUS 276829:C54V9 nidx=null]
 + Subcraspedites [ACCEPTED SUBGENUS 276829:C54VB nidx=null]
Subdichotomoceras
 - Subdichotomoceras Spath [ACCEPTED GENUS 272972:BSMGL nidx=null]
 + Subdichotomoceras [ACCEPTED GENUS 276829:C54VF nidx=null]
Subdiscosphinctes
 - Subdiscosphinctes Malinowska, 1972 [ACCEPTED GENUS 272972:BSMGM nidx=null]
 + Subdiscosphinctes [ACCEPTED GENUS 276829:C54VG nidx=null]
 + Subdiscosphinctes [ACCEPTED SUBGENUS 276829:C54VH nidx=null]
Subeothinites
 - Subeothinites Zakharov, 1983 [ACCEPTED GENUS 272972:BSMGQ nidx=null]
 + Subeothinites [ACCEPTED GENUS 276829:C54VJ nidx=null]
Subfengshanites
 - Subfengshanites Zakharov et al., 2008 [ACCEPTED GENUS 272972:BSMGR nidx=null]
 + Subfengshanites [ACCEPTED GENUS 276829:C54VL nidx=null]
Subflemingites
 - Subflemingites Spath, 1934 [ACCEPTED GENUS 272972:BSMGS nidx=null]
 + Subflemingites [ACCEPTED GENUS 276829:C54VN nidx=null]
Subhastites
 - Subhastites Gustomesov, 1977 [ACCEPTED GENUS 272972:BSMGX nidx=null]
 + Subhastites [ACCEPTED GENUS 276829:C54VS nidx=null]
Subhungarites
 - Subhungarites Tozer, 1994 [ACCEPTED GENUS 272972:BSMGY nidx=null]
 + Subhungarites [ACCEPTED GENUS 276829:C54VV nidx=null]
Subinyoites
 - Subinyoites Spath, 1930 [ACCEPTED GENUS 272972:BSMGZ nidx=null]
 + Subinyoites [ACCEPTED GENUS 276829:C54VY nidx=null]
Subitoceras
 - Subitoceras Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED GENUS 272972:BSMH2 nidx=null]
 + Subitoceras [ACCEPTED GENUS 276829:C54VZ nidx=null]
Subkargalites
 - Subkargalites (Ruzhentsev, 1950) [ACCEPTED GENUS 272972:BSMH3 nidx=null]
 + Subkargalites [ACCEPTED GENUS 276829:C54W2 nidx=null]
Submazapilites
 - Submazapilites Cantu-Chapa, 1962 [ACCEPTED GENUS 272972:BSMH8 nidx=null]
 + Submazapilites [ACCEPTED GENUS 276829:C54W7 nidx=null]
Submeekoceras
 - Submeekoceras (Spath, 1934) [ACCEPTED GENUS 272972:BSMH9 nidx=null]
 + Submeekoceras [ACCEPTED GENUS 276829:C54W8 nidx=null]
Submortoniceras
 - Submortoniceras (Spath, 1926) [ACCEPTED GENUS 272972:BSMHC nidx=null]
 + Submortoniceras [ACCEPTED GENUS 276829:C54WC nidx=null]
Submortoniceras buttense
 - Submortoniceras buttense (Anderson, 1958) [SYNONYM SPECIES 272972:BSZ3T nidx=null parent=NZ72]
 + Submortoniceras buttense (Anderson, 1902) [ACCEPTED SPECIES 276829:D762G nidx=null]
Subolenekites
 - Subolenekites Zakharov, 1978 [ACCEPTED GENUS 272972:BSMHH nidx=null]
 + Subolenekites [ACCEPTED GENUS 276829:C54WJ nidx=null]
Subowenites
 - Subowenites Popov, 1962 [ACCEPTED GENUS 272972:BSMHJ nidx=null]
 + Subowenites [ACCEPTED GENUS 276829:C54WK nidx=null]
Subprionotropis
 - Subprionotropis Basse, 1950 [ACCEPTED GENUS 272972:BSMHK nidx=null]
 + Subprionotropis [ACCEPTED GENUS 276829:C54WM nidx=null]
Subradioceras
 - Subradioceras Smyshlyaeva & Zakharov, 2015 [ACCEPTED GENUS 272972:BSMHL nidx=null]
 + Subradioceras [ACCEPTED GENUS 276829:C54WQ nidx=null]
Subsaltusaphis (Subsaltusaphis) lambersi
 - Subsaltusaphis (Subsaltusaphis) lambersi (Quednau, 1954) [ACCEPTED SPECIES 272972:53DLL nidx=null]
 + Subsaltusaphis (Subsaltusaphis) lambersi (Quednau, 1954) [ACCEPTED SPECIES 276829:D6Z8P nidx=null]
Subsaynella
 - Subsaynella Spath, 1923 [ACCEPTED GENUS 272972:BSMHM nidx=null]
 + Subsaynella [ACCEPTED GENUS 276829:C54X6 nidx=null]
Substeueroceras
 - Substeueroceras Spath, 1922 [ACCEPTED GENUS 272972:BSMHN nidx=null]
 + Substeueroceras [ACCEPTED GENUS 276829:C54X9 nidx=null]
Substreblites
 - Substreblites Spath, 1925 [ACCEPTED GENUS 272972:BSMHP nidx=null]
 + Substreblites [ACCEPTED GENUS 276829:C54XB nidx=null]
Subvinalesphinctes
 - Subvinalesphinctes Wierzbowski, 1976 [ACCEPTED GENUS 272972:BSMHQ nidx=null]
 + Subvinalesphinctes [ACCEPTED GENUS 276829:C54Y4 nidx=null]
Subvishnuites
 - Subvishnuites Spath, 1930 [ACCEPTED GENUS 272972:BSMHR nidx=null]
 + Subvishnuites [ACCEPTED GENUS 276829:C54Y6 nidx=null]
Sudeticeras
 - Sudeticeras Patteisky, 1929 [ACCEPTED GENUS 272972:BSMHS nidx=null]
 + Sudeticeras [ACCEPTED GENUS 276829:C54ZD nidx=null]
Sulcogirtyoceras
 - Sulcogirtyoceras (Ruzhencev, 1960) [ACCEPTED GENUS 272972:BSMHT nidx=null]
 + Sulcogirtyoceras [ACCEPTED GENUS 276829:C5532 nidx=null]
Sulioticeras
 - Sulioticeras Tozer, 1994 [ACCEPTED GENUS 272972:BSMHX nidx=null]
 + Sulioticeras [ACCEPTED GENUS 276829:C553Z nidx=null]
Sumitomoceras
 - Sumitomoceras (Matsumoto, 1969) [ACCEPTED GENUS 272972:BSMHY nidx=null]
 + Sumitomoceras [ACCEPTED GENUS 276829:C5559 nidx=null]
Sunrisites
 - Sunrisites Guex, 1980 [ACCEPTED GENUS 272972:BSMJ3 nidx=null]
 + Sunrisites [ACCEPTED GENUS 276829:C5586 nidx=null]
Surenites
 - Surenites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSMJ4 nidx=null]
 + Surenites [ACCEPTED GENUS 276829:C55B2 nidx=null]
Surites
 - Surites Sazonov, 1951 [ACCEPTED GENUS 272972:BSMJ5 nidx=null]
 + Surites [ACCEPTED GENUS 276829:C55B8 nidx=null]
 + Surites [ACCEPTED SUBGENUS 276829:C55B9 nidx=null]
Sutchanites
 - Sutchanites Zakharov, 1994 [ACCEPTED GENUS 272972:BSMJ7 nidx=null]
 + Sutchanites [ACCEPTED GENUS 276829:C55CJ nidx=null]
Sutneria
 - Sutneria Zittel, 1884 [ACCEPTED GENUS 272972:BSMJ8 nidx=null]
 + Sutneria [ACCEPTED GENUS 276829:C55D3 nidx=null]
Svalbardiceras
 - Svalbardiceras Frebold, 1930 [ACCEPTED GENUS 272972:BSMJB nidx=null]
 + Svalbardiceras [ACCEPTED GENUS 276829:C55FN nidx=null]
Sverdrupites
 - Sverdrupites Nassichuk, 1970 [ACCEPTED GENUS 272972:BSMJC nidx=null]
 + Sverdrupites [ACCEPTED GENUS 276829:C55GK nidx=null]
Svetlanoceras
 - Svetlanoceras Ruzhentsev, 1974 [ACCEPTED GENUS 272972:BSMJD nidx=null]
 + Svetlanoceras [ACCEPTED GENUS 276829:C55GL nidx=null]
Sympolycyclus
 - Sympolycyclus Spath, 1951 [ACCEPTED GENUS 272972:BSMJH nidx=null]
 + Sympolycyclus [ACCEPTED GENUS 276829:C55PH nidx=null]
Synartinskia
 - Synartinskia Ruzhencev, 1937 [ACCEPTED GENUS 272972:BSMJJ nidx=null]
 + Synartinskia [ACCEPTED GENUS 276829:C55SM nidx=null]
Synchodendron
 - Synchodendron Bojer ex DC. [SYNONYM UNRANKED 272972:5TH44 nidx=null parent=3CDQ]
 + Synchodendron Bojer ex DC. [SYNONYM UNRANKED 276829:D7XZ2 nidx=null parent=3CDQ]
Syngastrioceras
 - Syngastrioceras Librovitch, 1938 [ACCEPTED GENUS 272972:BSMJL nidx=null]
 + Syngastrioceras [ACCEPTED GENUS 276829:C55XX nidx=null]
Synpharciceras
 - Synpharciceras Schindewolf, 1940 [ACCEPTED GENUS 272972:BSMJM nidx=null]
 + Synpharciceras [ACCEPTED GENUS 276829:C563R nidx=null]
Synwocklumeria
 - Synwocklumeria Librovitch, 1957 [ACCEPTED GENUS 272972:BSMJN nidx=null]
 + Synwocklumeria [ACCEPTED GENUS 276829:C566N nidx=null]
Syrdenites
 - Syrdenites Nassichuk et al., 1965 [ACCEPTED GENUS 272972:BSMJP nidx=null]
 + Syrdenites [ACCEPTED GENUS 276829:C5674 nidx=null]
Tabantalites
 - Tabantalites Ruzhencev, 1952 [ACCEPTED GENUS 272972:BSMJQ nidx=null]
 + Tabantalites [ACCEPTED GENUS 276829:C56CJ nidx=null]
Taimyrites
 - Taimyrites Vavilov & Arkadiev, 1986 [ACCEPTED GENUS 272972:BSMJS nidx=null]
 + Taimyrites [ACCEPTED GENUS 276829:C56N7 nidx=null]
Taimyrosphinctes
 - Taimyrosphinctes Mesezhnikov, 1974 [ACCEPTED GENUS 272972:BSMJT nidx=null]
 + Taimyrosphinctes [ACCEPTED GENUS 276829:C56NK nidx=null]
 + Taimyrosphinctes [ACCEPTED SUBGENUS 276829:C56NL nidx=null]
Takahashiceras
 - Takahashiceras Hoffmann & Howarth, 2015 [ACCEPTED GENUS 272972:BSMJX nidx=null]
 + Takahashiceras [ACCEPTED GENUS 276829:C56RP nidx=null]
Talenticeras
 - Talenticeras Erben, 1965 [ACCEPTED GENUS 272972:BSMJY nidx=null]
 + Talenticeras [ACCEPTED GENUS 276829:C56SK nidx=null]
Taleshites
 - Taleshites Cecca & Seyed-Emami, 2012 [ACCEPTED GENUS 272972:BSMJZ nidx=null]
 + Taleshites [ACCEPTED GENUS 276829:C56SL nidx=null]
Tamarites
 - Tamarites Bogoslovsky, 1965 [ACCEPTED GENUS 272972:BSMK2 nidx=null]
 + Tamarites [ACCEPTED GENUS 276829:C56V5 nidx=null]
Tamaritidae
 - Tamaritidae Korn, 2001 [ACCEPTED FAMILY 272972:BSHC9 nidx=null]
 + Tamaritidae [ACCEPTED FAMILY 276829:BX7QQ nidx=null]
Tanabeceras
 - Tanabeceras Shigeta et al., 2012 [ACCEPTED GENUS 272972:BSMK3 nidx=null]
 + Tanabeceras [ACCEPTED GENUS 276829:C56WF nidx=null]
Tanacetum aureum
 - Tanacetum aureum (Lam.) Greuter, M. V. Agab. & Wagenitz [ACCEPTED SPECIES 272972:BSXH9 nidx=null]
 + Tanacetum aureum (Lam.) Greuter, M. V. Agab. & Wagenitz [ACCEPTED SPECIES 276829:CZJBB nidx=null]
Taouzites
 - Taouzites Korn, 2001 [ACCEPTED GENUS 272972:BSMKC nidx=null]
 + Taouzites [ACCEPTED GENUS 276829:C575F nidx=null]
Taouzitidae
 - Taouzitidae Korn, 2001 [ACCEPTED FAMILY 272972:BSHCC nidx=null]
 + Taouzitidae [ACCEPTED FAMILY 276829:BX7RR nidx=null]
Tapashanites
 - Tapashanites Zhao & Liang, 1965 [ACCEPTED GENUS 272972:BSMKD nidx=null]
 + Tapashanites [ACCEPTED GENUS 276829:C575W nidx=null]
Tapashanitidae
 - Tapashanitidae Zhao et al., 1978 [ACCEPTED FAMILY 272972:BSHCD nidx=null]
 + Tapashanitidae [ACCEPTED FAMILY 276829:BX7RT nidx=null]
Tapponnierites
 - Tapponnierites Guex et al., 2005 [ACCEPTED GENUS 272972:BSMKF nidx=null]
 + Tapponnierites [ACCEPTED GENUS 276829:C5793 nidx=null]
Taraisites
 - Taraisites Cantú-Chapa, 1966 [SYNONYM GENUS 272972:BSMKG nidx=null parent=BSL7Q]
 + Taraisites [ACCEPTED GENUS 276829:C579D nidx=null]
Taramelliceras
 - Taramelliceras Campana, 1905 [ACCEPTED GENUS 272972:BSMKH nidx=null]
 + Taramelliceras [ACCEPTED GENUS 276829:C579G nidx=null]
 + Taramelliceras [ACCEPTED SUBGENUS 276829:C579H nidx=null]
Tardeceras
 - Tardeceras Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSMKK nidx=null]
 + Tardeceras [ACCEPTED GENUS 276829:C57CB nidx=null]
Tardewocklumeria
 - Tardewocklumeria Becker, 2000 [ACCEPTED GENUS 272972:BSMKL nidx=null]
 + Tardewocklumeria [ACCEPTED GENUS 276829:C57CF nidx=null]
Tardicolumbites
 - Tardicolumbites Guex et al., 2005 [ACCEPTED GENUS 272972:BSMKM nidx=null]
 + Tardicolumbites [ACCEPTED GENUS 276829:C57CH nidx=null]
Tarrantites
 - Tarrantites Klinger et al., 2010 [ACCEPTED GENUS 272972:BSMKN nidx=null]
 + Tarrantites [ACCEPTED GENUS 276829:C57F4 nidx=null]
Tarrietia
 - Tarrietia Blume [SYNONYM UNRANKED 272972:5TH6V nidx=null parent=4VTL]
 + Tarrietia Blume [SYNONYM UNRANKED 276829:BX4NB nidx=null parent=4VTL]
Tauroceras
 - Tauroceras Toumansky, 1938 [SYNONYM GENUS 272972:BSNN2 nidx=null parent=BSL55]
 + Tauroceras Schafhäutl, 1854 [SYNONYM GENUS 276829:C6ZPW nidx=null parent=C35PR]
Tauromeniceras
 - Tauromeniceras (Mouterde, 1967) [ACCEPTED GENUS 272972:BSMKP nidx=null]
 + Tauromeniceras [ACCEPTED GENUS 276829:C57NW nidx=null]
Teclea
 - Teclea Delile [SYNONYM UNRANKED 272972:7NDL3 nidx=null parent=86B3]
 + Teclea Delile [SYNONYM UNRANKED 276829:BVHLN nidx=null parent=86B3]
Tectiretites
 - Tectiretites Ruzhencev & Bogoslovskaya, 1975 [ACCEPTED GENUS 272972:BSMKV nidx=null]
 + Tectiretites [ACCEPTED GENUS 276829:C57X7 nidx=null]
Tegoceras
 - Tegoceras Hyatt, 1903 [ACCEPTED GENUS 272972:BSMKW nidx=null]
 + Tegoceras [ACCEPTED GENUS 276829:C57ZD nidx=null]
Teicherticeras
 - Teicherticeras Erben, 1960 [ACCEPTED GENUS 272972:BSML2 nidx=null]
 + Teicherticeras [ACCEPTED GENUS 276829:C582Q nidx=null]
Teicherticeratidae
 - Teicherticeratidae Bogoslovsky, 1969 [ACCEPTED FAMILY 272972:BSHCF nidx=null]
 + Teicherticeratidae [ACCEPTED FAMILY 276829:BX7SL nidx=null]
Temertassetia
 - Temertassetia Korn et al., 2010 [ACCEPTED GENUS 272972:BSML6 nidx=null]
 + Temertassetia [ACCEPTED GENUS 276829:C58HB nidx=null]
Temertassetiidae
 - Temertassetiidae Korn et al., 2010 [ACCEPTED FAMILY 272972:BSHCG nidx=null]
 + Temertassetiidae [ACCEPTED FAMILY 276829:BX7SX nidx=null]
Teneriffiidae
 - Teneriffiidae [ACCEPTED FAMILY 272972:626NV nidx=null]
 + Teneriffiidae Thor, 1911 [ACCEPTED FAMILY 276829:BV774 nidx=null]
Teschenites
 - Teschenites (Thieuloy, 1971) [SYNONYM GENUS 272972:BSN74 nidx=null parent=BSN75]
 + Teschenites [ACCEPTED SUBGENUS 276829:C63VS nidx=null]
Tetragonitaceae
 - Tetragonitaceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGWT nidx=null]
 + Tetragonitaceae [ACCEPTED SUPERFAMILY 276829:BWY26 nidx=null]
Tetragonites
 - Tetragonites Kittl, 1903 [SYNONYM GENUS 272972:BSN76 nidx=null parent=BSJMM]
 - Tetragonites (Kossmat, 1895) [SYNONYM GENUS 272972:BSN77 nidx=null parent=BSN7B]
 + Tetragonites [ACCEPTED SUBGENUS 276829:C63W4 nidx=null]
Tetragonitidae
 - Tetragonitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHCH nidx=null]
 + Tetragonitidae [ACCEPTED FAMILY 276829:BX7VJ nidx=null]
Tetrahoplitoides
 - Tetrahoplitoides Casey, 1954 [ACCEPTED GENUS 272972:BSML8 nidx=null]
 + Tetrahoplitoides [ACCEPTED GENUS 276829:C59K3 nidx=null]
Tetraneura (Tetraneura) radicicola
 - Tetraneura (Tetraneura) radicicola [ACCEPTED SPECIES 272972:BHNHW nidx=null]
 + Tetraneura (Tetraneura) radicicola [ACCEPTED SPECIES 276829:C33X2 nidx=null]
Tetsaoceras
 - Tetsaoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSML9 nidx=null]
 + Tetsaoceras [ACCEPTED GENUS 276829:C59N8 nidx=null]
Texanites
 - Texanites (Spath, 1932) [ACCEPTED GENUS 272972:BSMLB nidx=null]
 + Texanites [ACCEPTED GENUS 276829:C59VP nidx=null]
 + Texanites [ACCEPTED SUBGENUS 276829:C59VQ nidx=null]
Texasia
 - Texasia (Reeside, 1932) [SYNONYM GENUS 272972:BSN7C nidx=null parent=BSN7D]
 + Texasia [ACCEPTED SUBGENUS 276829:C63WN nidx=null]
Texoceras
 - Texoceras Miller & Furnish, 1940 [ACCEPTED GENUS 272972:BSMLF nidx=null]
 + Texoceras [ACCEPTED GENUS 276829:C59WM nidx=null]
Thalassoceras
 - Thalassoceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSMLG nidx=null]
 + Thalassoceras [ACCEPTED GENUS 276829:C5B6M nidx=null]
Thalassocerataceae
 - Thalassocerataceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGWV nidx=null]
 + Thalassocerataceae [ACCEPTED SUPERFAMILY 276829:BWY2C nidx=null]
Thalassoceratidae
 - Thalassoceratidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHCJ nidx=null]
 + Thalassoceratidae [ACCEPTED FAMILY 276829:BX7WG nidx=null]
Thamboceras
 - Thamboceras Douvillé, 1916 [ACCEPTED GENUS 272972:BSMLH nidx=null]
 + Thamboceras [ACCEPTED GENUS 276829:C5B9Q nidx=null]
Thamboceratidae
 - Thamboceratidae Arkell, 1952 [ACCEPTED FAMILY 272972:BSHCK nidx=null]
 + Thamboceratidae [ACCEPTED FAMILY 276829:BX7WK nidx=null]
Thanamites
 - Thanamites Diener, 1908 [ACCEPTED GENUS 272972:BSMLJ nidx=null]
 + Thanamites [ACCEPTED GENUS 276829:C5BCW nidx=null]
Thanamitidae
 - Thanamitidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSHCL nidx=null]
 + Thanamitidae [ACCEPTED FAMILY 276829:BX7WQ nidx=null]
Theodorites
 - Theodorites Baraboshkin & Mikhailova, 2006 [ACCEPTED GENUS 272972:BSMLM nidx=null]
 + Theodorites [ACCEPTED GENUS 276829:C5BKN nidx=null]
Therioaphis (Pterocallidium) trifolii
 - Therioaphis (Pterocallidium) trifolii (Monell, 1882) [ACCEPTED SPECIES 272972:7BXD6 nidx=null]
 + Therioaphis (Pterocallidium) trifolii (Monell, 1882) [ACCEPTED SPECIES 276829:C34K9 nidx=null]
Thermalites
 - Thermalites Smith, 1927 [ACCEPTED GENUS 272972:BSMLN nidx=null]
 + Thermalites [ACCEPTED GENUS 276829:C5BM6 nidx=null]
Thetidites
 - Thetidites (von Mojsisovics, 1896) [ACCEPTED GENUS 272972:BSMLP nidx=null]
 + Thetidites [ACCEPTED GENUS 276829:C5BP5 nidx=null]
Thetiditidae
 - Thetiditidae Tozer, 1971 [ACCEPTED FAMILY 272972:BSHCM nidx=null]
 + Thetiditidae [ACCEPTED FAMILY 276829:BX7X9 nidx=null]
Thiniites
 - Thiniites Krystyn, 1982 [ACCEPTED GENUS 272972:BSMLS nidx=null]
 + Thiniites [ACCEPTED GENUS 276829:C5BQ8 nidx=null]
Thisbites
 - Thisbites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSMLW nidx=null]
 + Thisbites [ACCEPTED GENUS 276829:C5BR5 nidx=null]
Thisbitidae
 - Thisbitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSHCN nidx=null]
 + Thisbitidae [ACCEPTED FAMILY 276829:BX7XF nidx=null]
Thomasites
 - Thomasites Pervinquiére, 1907 [ACCEPTED GENUS 272972:BSMLY nidx=null]
 + Thomasites [ACCEPTED GENUS 276829:C5BTF nidx=null]
Thorsteinssonoceras
 - Thorsteinssonoceras Jeletzky, 1965 [ACCEPTED GENUS 272972:BSMLZ nidx=null]
 + Thorsteinssonoceras [ACCEPTED GENUS 276829:C5BXV nidx=null]
Thurmanniceras
 - Thurmanniceras Cossmann, 1901 [ACCEPTED GENUS 272972:BSMM2 nidx=null]
 + Thurmanniceras [ACCEPTED GENUS 276829:C5C34 nidx=null]
Thurmanniceras jenkinsi
 - Thurmanniceras jenkinsi (Anderson, 1933) [SYNONYM SPECIES 272972:BSZ98 nidx=null parent=BSVY5]
 + Thurmanniceras jenkinsi (Anderson, 1938) [ACCEPTED SPECIES 276829:D7WYR nidx=null]
Tibetites
 - Tibetites Mojsisovics, 1896 [ACCEPTED GENUS 272972:BSMM3 nidx=null]
 + Tibetites [ACCEPTED GENUS 276829:C5C6T nidx=null]
Tibetitidae
 - Tibetitidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHCP nidx=null]
 + Tibetitidae [ACCEPTED FAMILY 276829:BX7XW nidx=null]
Tiltoniceras
 - Tiltoniceras Buckman, 1913 [ACCEPTED GENUS 272972:BSMM5 nidx=null]
 + Tiltoniceras [ACCEPTED GENUS 276829:C5CB5 nidx=null]
Timanites
 - Timanites Mojsisovics, 1882 [ACCEPTED GENUS 272972:BSMM6 nidx=null]
 + Timanites [ACCEPTED GENUS 276829:C5CB9 nidx=null]
 + Timanites Davydov & Arefifard, 2007 [ACCEPTED GENUS 276829:C5CBB nidx=null]
Timanoceras
 - Timanoceras Bogoslovsky, 1957 [ACCEPTED GENUS 272972:BSMM7 nidx=null]
 + Timanoceras [ACCEPTED GENUS 276829:C5CBC nidx=null]
Timoceras
 - Timoceras Dagis & Ermakova, 1988 [ACCEPTED GENUS 272972:BSMM8 nidx=null]
 + Timoceras [ACCEPTED GENUS 276829:C5CBR nidx=null]
Timorites
 - Timorites Haniel, 1915 [ACCEPTED GENUS 272972:BSMM9 nidx=null]
 + Timorites [ACCEPTED GENUS 276829:C5CBW nidx=null]
Tipperoceras
 - Tipperoceras Taylor, 1998 [ACCEPTED GENUS 272972:BSMMD nidx=null]
 + Tipperoceras [ACCEPTED GENUS 276829:C5CFZ nidx=null]
Tirolites
 - Tirolites Mojsisovics, 1879 [ACCEPTED GENUS 272972:BSMMF nidx=null]
 + Tirolites [ACCEPTED GENUS 276829:C5CG9 nidx=null]
Tissotia
 - Tissotia Douvillé, 1890 [ACCEPTED GENUS 272972:BSMMG nidx=null]
 + Tissotia [ACCEPTED GENUS 276829:C5CGP nidx=null]
Tissotiidae
 - Tissotiidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHCQ nidx=null]
 + Tissotiidae [ACCEPTED FAMILY 276829:BX7Y7 nidx=null]
Tissotioides
 - Tissotioides Reyment, 1958 [ACCEPTED GENUS 272972:BSMMH nidx=null]
 + Tissotioides [ACCEPTED GENUS 276829:C5CGQ nidx=null]
 + Tissotioides [ACCEPTED SUBGENUS 276829:C5CGR nidx=null]
Tlahualiloceras
 - Tlahualiloceras Kellum & Mintz, 1962 [ACCEPTED GENUS 272972:BSMMK nidx=null]
 + Tlahualiloceras [ACCEPTED GENUS 276829:C5CJB nidx=null]
Tobolia
 - Tobolia Sasonov, 1960 [ACCEPTED GENUS 272972:BSMML nidx=null]
 + Tobolia Dain, 1958 [ACCEPTED GENUS 276829:C5CKK nidx=null]
Toddaliopsis
 - Toddaliopsis Engl. [SYNONYM UNRANKED 272972:5THGF nidx=null parent=86B3]
 + Toddaliopsis Engl. [SYNONYM UNRANKED 276829:BVHQN nidx=null parent=86B3]
Togaticeras
 - Togaticeras Rakús, 1993 [ACCEPTED GENUS 272972:BSMMM nidx=null]
 + Togaticeras [ACCEPTED GENUS 276829:C5CLQ nidx=null]
Tollia
 - Tollia Pavlow, 1914 [ACCEPTED GENUS 272972:BSMMN nidx=null]
 + Tollia [ACCEPTED GENUS 276829:C5CN2 nidx=null]
 + Tollia [ACCEPTED SUBGENUS 276829:C5CN3 nidx=null]
Tompophiceras
 - Tompophiceras Popov, 1961 [ACCEPTED GENUS 272972:BSMMQ nidx=null]
 + Tompophiceras [ACCEPTED GENUS 276829:C5CQ2 nidx=null]
Tompoproptychites
 - Tompoproptychites (Vavilov & Zakharov, 1976) [SYNONYM GENUS 272972:BSN7F nidx=null parent=BSN7G]
 + Tompoproptychites [ACCEPTED SUBGENUS 276829:C642F nidx=null]
Tongluceras
 - Tongluceras Zhao & Zheng, 1977 [ACCEPTED GENUS 272972:BSMMR nidx=null]
 + Tongluceras [ACCEPTED GENUS 276829:C5CQJ nidx=null]
Tongoboryceras
 - Tongoboryceras Housa, 1967 [ACCEPTED GENUS 272972:BSMMS nidx=null]
 + Tongoboryceras [ACCEPTED GENUS 276829:C5CQK nidx=null]
Tonohamites
 - Tonohamites Spath, 1924 [ACCEPTED GENUS 272972:BSMMV nidx=null]
 + Tonohamites [ACCEPTED GENUS 276829:C5CR5 nidx=null]
Torleyoceras
 - Torleyoceras (Wedekind, 1918) [ACCEPTED GENUS 272972:BSMMW nidx=null]
 + Torleyoceras [ACCEPTED GENUS 276829:C5CSF nidx=null]
Tornia
 - Tornia House, 1970 [ACCEPTED GENUS 272972:BSMMZ nidx=null]
 + Tornia [ACCEPTED GENUS 276829:C5CSP nidx=null]
Tornoceras
 - Tornoceras (Hyatt, 1884) [ACCEPTED GENUS 272972:BSMN2 nidx=null]
 + Tornoceras [ACCEPTED GENUS 276829:C5CSV nidx=null]
 + Tornoceras [ACCEPTED SUBGENUS 276829:C5CSW nidx=null]
Tornocerataceae
 - Tornocerataceae Arthaber, 1911 [ACCEPTED SUPERFAMILY 272972:BSGWW nidx=null]
 + Tornocerataceae [ACCEPTED SUPERFAMILY 276829:BWY2M nidx=null]
Tornoceratidae
 - Tornoceratidae Arthaber, 1911 [ACCEPTED FAMILY 272972:BSHCR nidx=null]
 + Tornoceratidae [ACCEPTED FAMILY 276829:BX7YN nidx=null]
Tornoceratoidea
 - Tornoceratoidea Arthaber, 1911 [ACCEPTED SUPERFAMILY 272972:BSGWX nidx=null]
 + Tornoceratoidea [ACCEPTED SUPERFAMILY 276829:BWY2N nidx=null]
Tornquistites
 - Tornquistites Hyatt & Smith, 1905 [ACCEPTED GENUS 272972:BSMN8 nidx=null]
 + Tornquistites [ACCEPTED GENUS 276829:C5CT2 nidx=null]
Torquatisphinctes
 - Torquatisphinctes Spath [ACCEPTED GENUS 272972:BSMN9 nidx=null]
 + Torquatisphinctes [ACCEPTED GENUS 276829:C5CTR nidx=null]
Toucasiella
 - Toucasiella Enay et al., 1998 [ACCEPTED GENUS 272972:BSMNC nidx=null]
 + Toucasiella [ACCEPTED GENUS 276829:C5CXL nidx=null]
Toxoceratoides
 - Toxoceratoides Spath, 1924 [ACCEPTED GENUS 272972:BSMND nidx=null]
 + Toxoceratoides [ACCEPTED GENUS 276829:C5CYV nidx=null]
Tozeria
 - Tozeria Tatzreiter, 1985 [ACCEPTED GENUS 272972:BSH94 nidx=null]
 + Tozeria [ACCEPTED GENUS 276829:BX63D nidx=null]
Tozericeras
 - Tozericeras Guex, 1978 [ACCEPTED GENUS 272972:BSMNF nidx=null]
 + Tozericeras [ACCEPTED GENUS 276829:C5CZD nidx=null]
Tozerites
 - Tozerites Silberling & Nichols, 1982 [ACCEPTED GENUS 272972:BSMNG nidx=null]
 + Tozerites [ACCEPTED GENUS 276829:C5CZF nidx=null]
Trachyceras
 - Trachyceras (Laube, 1869) [ACCEPTED GENUS 272972:BSMNH nidx=null]
 + Trachyceras [ACCEPTED GENUS 276829:C5D38 nidx=null]
Trachyceras attila
 - Trachyceras attila (Mojsisovics, 1870) [ACCEPTED SPECIES 272972:BSZG6 nidx=null]
 + Trachyceras attila (Mojsisovics, 1893) [SYNONYM SPECIES 276829:D84B2 nidx=null parent=CT877]
Trachycerataceae
 - Trachycerataceae Haug, 1894 [ACCEPTED SUPERFAMILY 272972:BSGWY nidx=null]
 + Trachycerataceae [ACCEPTED SUPERFAMILY 276829:BWY2R nidx=null]
Trachyceratidae
 - Trachyceratidae Haug, 1894 [ACCEPTED FAMILY 272972:BSHCS nidx=null]
 + Trachyceratidae [ACCEPTED FAMILY 276829:BX7YX nidx=null]
Trachyornites
 - Trachyornites Wang & Chen, 1979 [ACCEPTED GENUS 272972:BSMNP nidx=null]
 + Trachyornites [ACCEPTED GENUS 276829:C5D48 nidx=null]
Trachypleuraspidites
 - Trachypleuraspidites (Diener, 1906) [SYNONYM GENUS 272972:BSN7H nidx=null parent=BSN7J]
 + Trachypleuraspidites [ACCEPTED SUBGENUS 276829:C643R nidx=null]
Trachysagenites
 - Trachysagenites (Mojsisovics, 1893) [ACCEPTED GENUS 272972:BSMNQ nidx=null]
 + Trachysagenites [ACCEPTED GENUS 276829:C5D5C nidx=null]
Trachyscaphites
 - Trachyscaphites Cobban & Scott, 1964 [ACCEPTED GENUS 272972:BSMNT nidx=null]
 + Trachyscaphites [ACCEPTED GENUS 276829:C5D5F nidx=null]
Trachystenoceras
 - Trachystenoceras Johnston, 1941 [ACCEPTED GENUS 272972:BSMNV nidx=null]
 + Trachystenoceras [ACCEPTED GENUS 276829:C5D5H nidx=null]
Tragodesmoceras
 - Tragodesmoceras Spath, 1922 [ACCEPTED GENUS 272972:BSMNW nidx=null]
 + Tragodesmoceras [ACCEPTED GENUS 276829:C5D5X nidx=null]
Tragolytoceras
 - Tragolytoceras Spath, 1924 [ACCEPTED GENUS 272972:BSMNX nidx=null]
 + Tragolytoceras [ACCEPTED GENUS 276829:C5D5Y nidx=null]
Tragophylloceras
 - Tragophylloceras Hyatt, 1900 [ACCEPTED GENUS 272972:BSMNY nidx=null]
 + Tragophylloceras [ACCEPTED GENUS 276829:C5D62 nidx=null]
Tragorhacoceras
 - Tragorhacoceras Spath, 1927 [ACCEPTED GENUS 272972:BSMNZ nidx=null]
 + Tragorhacoceras [ACCEPTED GENUS 276829:C5D63 nidx=null]
Traskites
 - Traskites (Hyatt & Smith, 1905) [ACCEPTED GENUS 272972:BSMP2 nidx=null]
 + Traskites [ACCEPTED GENUS 276829:C5D83 nidx=null]
Trepialus
 - Trepialus Fabricius, 1775 [SYNONYM GENUS 272972:9B9BH nidx=null parent=92BDQ]
 + Trepialus Latreille, [1805] [SYNONYM GENUS 276829:95MXY nidx=null parent=92BDQ]
Trettinoceras
 - Trettinoceras Nassichuk, 1975 [ACCEPTED GENUS 272972:BSMP7 nidx=null]
 + Trettinoceras [ACCEPTED GENUS 276829:C5DBY nidx=null]
Trevoneites
 - Trevoneites Becker & House, 1994 [ACCEPTED GENUS 272972:BSMP8 nidx=null]
 + Trevoneites [ACCEPTED GENUS 276829:C5DBZ nidx=null]
Triaclymenia
 - Triaclymenia Schindewolf, 1937 [ACCEPTED GENUS 272972:BSMP9 nidx=null]
 + Triaclymenia [ACCEPTED GENUS 276829:C5DC4 nidx=null]
Triainoceratidae
 - Triainoceratidae Hyatt, 1884 [ACCEPTED FAMILY 272972:BSHCT nidx=null]
 + Triainoceratidae [ACCEPTED FAMILY 276829:BX7ZM nidx=null]
Trichophassus giganteus
 - Trichophassus giganteus (Herrich-Schäffer, 1855) [ACCEPTED SPECIES 272972:BSF5N nidx=null]
 + Trichophassus giganteus (Herrich-Schäffer, [1853]) [ACCEPTED SPECIES 276829:58GY4 nidx=null]
Tridenticeras
 - Tridenticeras Wiedmann, 1962 [ACCEPTED GENUS 272972:BSMPB nidx=null]
 + Tridenticeras [ACCEPTED GENUS 276829:C5DXS nidx=null]
Trigonogastrites
 - Trigonogastrites Zhao et al., 1978 [ACCEPTED GENUS 272972:BSMPG nidx=null]
 + Trigonogastrites [ACCEPTED GENUS 276829:C5F2X nidx=null]
Triimitoceras
 - Triimitoceras Korn et al., 2003 [ACCEPTED GENUS 272972:BSMPH nidx=null]
 + Triimitoceras [ACCEPTED GENUS 276829:C5F43 nidx=null]
Trimanticoceras
 - Trimanticoceras House, 1977 [ACCEPTED GENUS 272972:BSMPJ nidx=null]
 + Trimanticoceras [ACCEPTED GENUS 276829:C5F5L nidx=null]
Trimarginites
 - Trimarginites (Rollier, 1909) [ACCEPTED GENUS 272972:BSMPK nidx=null]
 + Trimarginites [ACCEPTED GENUS 276829:C5F5M nidx=null]
 + Trimarginites [ACCEPTED SUBGENUS 276829:C5F5N nidx=null]
Triniteurybia aberrans
 - Triniteurybia aberrans (A. Nelson) Brouillet, Urbatsch & R. P. Roberts [ACCEPTED SPECIES 272972:58VLK nidx=null]
 + Triniteurybia aberrans (A. Nelson) Brouillet, Urbatsch & R. P. Roberts [ACCEPTED SPECIES 276829:BXMSK nidx=null]
Triplotaxis
 - Triplotaxis Hutch. [SYNONYM UNRANKED 272972:5THQS nidx=null parent=3XQG]
 + Triplotaxis Hutch. [SYNONYM UNRANKED 276829:D7YJZ nidx=null parent=3XQG]
Trizonoceras
 - Trizonoceras Girty, 1909 [ACCEPTED GENUS 272972:BSMPN nidx=null]
 + Trizonoceras [ACCEPTED GENUS 276829:C5FMH nidx=null]
Trochilioceras
 - Trochilioceras Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSMPP nidx=null]
 + Trochilioceras [ACCEPTED GENUS 276829:C5FNH nidx=null]
Trochoclymenia
 - Trochoclymenia Schindewolf, 1926 [ACCEPTED GENUS 272972:BSMPQ nidx=null]
 + Trochoclymenia [ACCEPTED GENUS 276829:C5FQ2 nidx=null]
Tropaeum
 - Tropaeum Sowerby, 1837 [ACCEPTED GENUS 272972:BSMPS nidx=null]
 + Tropaeum [ACCEPTED GENUS 276829:C5G4D nidx=null]
 + Tropaeum [ACCEPTED SUBGENUS 276829:C5G4F nidx=null]
Tropiceltites
 - Tropiceltites Mojsisovics, 1893 [ACCEPTED GENUS 272972:BSMPV nidx=null]
 + Tropiceltites [ACCEPTED GENUS 276829:C5G8P nidx=null]
Tropiceltitidae
 - Tropiceltitidae Spath, 1951 [ACCEPTED FAMILY 272972:BSHCV nidx=null]
 + Tropiceltitidae [ACCEPTED FAMILY 276829:BX83D nidx=null]
Tropidoceras
 - Tropidoceras Hyatt, 1867 [ACCEPTED GENUS 272972:BSMPX nidx=null]
 + Tropidoceras [ACCEPTED GENUS 276829:C5GCC nidx=null]
Tropigastrites
 - Tropigastrites Smith, 1914 [ACCEPTED GENUS 272972:BSMPY nidx=null]
 + Tropigastrites [ACCEPTED GENUS 276829:C5GFR nidx=null]
Tropigymnites
 - Tropigymnites Spath, 1951 [ACCEPTED GENUS 272972:BSMPZ nidx=null]
 + Tropigymnites [ACCEPTED GENUS 276829:C5GFS nidx=null]
Tropihalorites
 - Tropihalorites Shevyrev, 1990 [ACCEPTED GENUS 272972:BSMQ2 nidx=null]
 + Tropihalorites [ACCEPTED GENUS 276829:C5GFT nidx=null]
Tropijuvavites
 - Tropijuvavites Krystyn, 1982 [ACCEPTED GENUS 272972:BSMQ3 nidx=null]
 + Tropijuvavites [ACCEPTED GENUS 276829:C5GFV nidx=null]
Tropitaceae
 - Tropitaceae Mojsisovics, 1875 [ACCEPTED SUPERFAMILY 272972:BSGWZ nidx=null]
 + Tropitaceae [ACCEPTED SUPERFAMILY 276829:BWY3D nidx=null]
Tropites
 - Tropites Mojsisovics, 1875 [ACCEPTED GENUS 272972:BSMQ4 nidx=null]
 + Tropites [ACCEPTED GENUS 276829:C5GG5 nidx=null]
Tropithisbites
 - Tropithisbites Tozer, 1994 [ACCEPTED GENUS 272972:BSMQ5 nidx=null]
 + Tropithisbites [ACCEPTED GENUS 276829:C5GG6 nidx=null]
Tropitidae
 - Tropitidae Mojsisovics, 1875 [ACCEPTED FAMILY 272972:BSHCW nidx=null]
 + Tropitidae [ACCEPTED FAMILY 276829:BX83M nidx=null]
Tropitoidea
 - Tropitoidea Mojsisovics, 1875 [ACCEPTED SUPERFAMILY 272972:BSGX2 nidx=null]
 + Tropitoidea [ACCEPTED SUPERFAMILY 276829:BWY3G nidx=null]
Truempyceras
 - Truempyceras Brühwiler & Bucher, 2012 [ACCEPTED GENUS 272972:BSMQ7 nidx=null]
 + Truempyceras [ACCEPTED GENUS 276829:C5GGP nidx=null]
Truyolsoceras
 - Truyolsoceras Montesinos, 1987 [ACCEPTED GENUS 272972:BSMQ8 nidx=null]
 + Truyolsoceras [ACCEPTED GENUS 276829:C5GJ4 nidx=null]
Tsvetkovites
 - Tsvetkovites Vavilov & Korchinskya, 1973 [ACCEPTED GENUS 272972:BSMQ9 nidx=null]
 + Tsvetkovites [ACCEPTED GENUS 276829:C5GSL nidx=null]
Tuberocephalus (Trichosiphoniella) misakurae
 - Tuberocephalus (Trichosiphoniella) misakurae Moritsu & Hamasaki, 1983 [ACCEPTED SPECIES 272972:BSZJ7 nidx=null]
 + Tuberocephalus (Trichosiphoniella) misakurae Moritsu & Hamasaki, 1983 [ACCEPTED SPECIES 276829:D8P5F nidx=null]
Tuchodiceras
 - Tuchodiceras Tozer, 1994 [ACCEPTED GENUS 272972:BSMQC nidx=null]
 + Tuchodiceras [ACCEPTED GENUS 276829:C5GX5 nidx=null]
Tulitidae
 - Tulitidae Buckman, 1921 [ACCEPTED FAMILY 272972:BSHCY nidx=null]
 + Tulitidae [ACCEPTED FAMILY 276829:BX84F nidx=null]
Tulongites
 - Tulongites Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSMQD nidx=null]
 + Tulongites [ACCEPTED GENUS 276829:C5GYH nidx=null]
Tumaroceras
 - Tumaroceras Ruzhencev, 1961 [ACCEPTED GENUS 272972:BSMQF nidx=null]
 + Tumaroceras [ACCEPTED GENUS 276829:C5GZ2 nidx=null]
Tumulites
 - Tumulites McCaleb et al., 1964 [ACCEPTED GENUS 272972:BSMQG nidx=null]
 + Tumulites [ACCEPTED GENUS 276829:C5GZJ nidx=null]
Tunglanites
 - Tunglanites Zhao, 1959 [ACCEPTED GENUS 272972:BSMQH nidx=null]
 + Tunglanites [ACCEPTED GENUS 276829:C5H22 nidx=null]
Turkmeniceras
 - Turkmeniceras Tovbina, 1963 [ACCEPTED GENUS 272972:BSMQJ nidx=null]
 + Turkmeniceras [ACCEPTED GENUS 276829:C5HFK nidx=null]
Turrilitaceae
 - Turrilitaceae Gill, 1871 [ACCEPTED SUPERFAMILY 272972:BSGX3 nidx=null]
 + Turrilitaceae [ACCEPTED SUPERFAMILY 276829:BWY3N nidx=null]
Turrilites
 - Turrilites Lamarck, 1801 [ACCEPTED GENUS 272972:BSMQK nidx=null]
 + Turrilites [ACCEPTED GENUS 276829:C5HHB nidx=null]
 + Turrilites [ACCEPTED SUBGENUS 276829:C5HHC nidx=null]
Turrilitidae
 - Turrilitidae Gill, 1871 [ACCEPTED FAMILY 272972:BSHCZ nidx=null]
 + Turrilitidae [ACCEPTED FAMILY 276829:BX84K nidx=null]
Tympanoceras
 - Tympanoceras Ruzhencev, 1958 [ACCEPTED GENUS 272972:BSMQM nidx=null]
 + Tympanoceras [ACCEPTED GENUS 276829:C5HR6 nidx=null]
Ubites
 - Ubites Korn & Sudar, 2010 [ACCEPTED GENUS 272972:BSMQN nidx=null]
 + Ubites [ACCEPTED GENUS 276829:C5HZH nidx=null]
Uchtites
 - Uchtites Bogoslovsky, 1958 [ACCEPTED GENUS 272972:BSMQP nidx=null]
 + Uchtites [ACCEPTED GENUS 276829:C5HZZ nidx=null]
Uddenites
 - Uddenites Böse, 1919 [ACCEPTED GENUS 272972:BSMQQ nidx=null]
 + Uddenites [ACCEPTED GENUS 276829:C5J2L nidx=null]
Uhligites
 - Uhligites Kilian, 1913 [ACCEPTED GENUS 272972:BSMQV nidx=null]
 + Uhligites [ACCEPTED GENUS 276829:C5J7B nidx=null]
Umbetoceras
 - Umbetoceras Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSMR3 nidx=null]
 + Umbetoceras [ACCEPTED GENUS 276829:C5JH3 nidx=null]
Umbosporadoceras
 - Umbosporadoceras Becker, 2002 [ACCEPTED GENUS 272972:BSMR4 nidx=null]
 + Umbosporadoceras [ACCEPTED GENUS 276829:C5JJ6 nidx=null]
Umgazaniceras
 - Umgazaniceras Klinger & Kennedy, 1979 [ACCEPTED GENUS 272972:BSMR5 nidx=null]
 + Umgazaniceras [ACCEPTED GENUS 276829:C5JJW nidx=null]
Umsinenoceras
 - Umsinenoceras Kennedy et al., 1979 [ACCEPTED GENUS 272972:BSMR6 nidx=null]
 + Umsinenoceras [ACCEPTED GENUS 276829:C5JK4 nidx=null]
Ungusporadoceras
 - Ungusporadoceras Korn et al., 2015 [ACCEPTED GENUS 272972:BSMRB nidx=null]
 + Ungusporadoceras [ACCEPTED GENUS 276829:C5JXK nidx=null]
Unionvillites
 - Unionvillites Silberling & Nichols, 1982 [ACCEPTED GENUS 272972:BSMRC nidx=null]
 + Unionvillites [ACCEPTED GENUS 276829:C5JZ4 nidx=null]
Unipeltoceras
 - Unipeltoceras Jeannet, 1951 [ACCEPTED GENUS 272972:BSMRD nidx=null]
 + Unipeltoceras [ACCEPTED GENUS 276829:C5JZ5 nidx=null]
Uptonia
 - Uptonia Buckman, 1898 [ACCEPTED GENUS 272972:BSMRF nidx=null]
 + Uptonia [ACCEPTED GENUS 276829:C5K3X nidx=null]
Uraloceras
 - Uraloceras Ruzhencev, 1936 [ACCEPTED GENUS 272972:BSMRG nidx=null]
 + Uraloceras [ACCEPTED GENUS 276829:C5K59 nidx=null]
Uralopronorites
 - Uralopronorites Librovitch & Ruzhencev, 1949 [ACCEPTED GENUS 272972:BSMRH nidx=null]
 + Uralopronorites [ACCEPTED GENUS 276829:C5K5H nidx=null]
Uralyroceras
 - Uralyroceras Korn & Titus, 2015 [ACCEPTED GENUS 272972:BSMRJ nidx=null]
 + Uralyroceras [ACCEPTED GENUS 276829:C5K5N nidx=null]
Urdyceras
 - Urdyceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSMRQ nidx=null]
 + Urdyceras [ACCEPTED GENUS 276829:C5K8W nidx=null]
Uroleucon (Uroleucon) cichorii
 - Uroleucon (Uroleucon) cichorii (Koch, 1855) [ACCEPTED SPECIES 272972:BSY34 nidx=null]
 + Uroleucon (Uroleucon) cichorii (Koch, 1855) [ACCEPTED SPECIES 276829:D39QL nidx=null]
Uroleucon (Uroleucon) erigeronense
 - Uroleucon (Uroleucon) erigeronense (Thomas, 1878) [SYNONYM SPECIES 272972:BSL6M nidx=null parent=7DTWF]
 + Uroleucon (Uroleucon) erigeronense (Thomas, 1878) [SYNONYM SPECIES 276829:C39BW nidx=null parent=7DTWF]
Uroleucon (Uroleucon) muermosum
 - Uroleucon (Uroleucon) muermosum (Essig, 1953) [ACCEPTED SPECIES 272972:7DW5J nidx=null]
 + Uroleucon (Uroleucon) muermosum (Essig, 1953) [ACCEPTED SPECIES 276829:D94TL nidx=null]
Uroleucon (Uroleucon) murale
 - Uroleucon (Uroleucon) murale (Buckton, 1876) [ACCEPTED SPECIES 272972:BSY3H nidx=null]
 + Uroleucon (Uroleucon) murale (Buckton, 1876) [ACCEPTED SPECIES 276829:D39RK nidx=null]
Uroleucon (Uroleucon) obscurum
 - Uroleucon (Uroleucon) obscurum (Koch, 1855) [ACCEPTED SPECIES 272972:BSY3J nidx=null]
 + Uroleucon (Uroleucon) obscurum (Koch, 1855) [ACCEPTED SPECIES 276829:D39RQ nidx=null]
Uroleucon (Uroleucon) sonchellum
 - Uroleucon (Uroleucon) sonchellum (Monell, 1879) [ACCEPTED SPECIES 272972:7DW3T nidx=null]
 + Uroleucon (Uroleucon) sonchellum (Monell, 1879) [ACCEPTED SPECIES 276829:D39RV nidx=null]
Uroleucon (Uroleucon) sonchi
 - Uroleucon (Uroleucon) sonchi (Linnaeus, 1767) [ACCEPTED SPECIES 272972:7DW45 nidx=null]
 + Uroleucon (Uroleucon) sonchi (Linnaeus, 1767) [ACCEPTED SPECIES 276829:C39BZ nidx=null]
Urostigma
 - Urostigma Gasp. [SYNONYM UNRANKED 272972:5THWM nidx=null parent=4JYX]
 + Urostigma Gasp. [SYNONYM UNRANKED 276829:BX6XD nidx=null parent=4JYX]
Ussuria
 - Ussuria Diener, 1895 [ACCEPTED GENUS 272972:BSMRX nidx=null]
 + Ussuria [ACCEPTED GENUS 276829:C5LGD nidx=null]
Ussuriaspenites
 - Ussuriaspenites Zakharov & Smyshlyaeva, 2013 [ACCEPTED GENUS 272972:BSMRY nidx=null]
 + Ussuriaspenites [ACCEPTED GENUS 276829:C5LGP nidx=null]
Ussuridiscus
 - Ussuridiscus Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSMRZ nidx=null]
 + Ussuridiscus [ACCEPTED GENUS 276829:C5LGR nidx=null]
Ussuriflemingites
 - Ussuriflemingites Shigeta & Zakharov, 2009 [ACCEPTED GENUS 272972:BSMS2 nidx=null]
 + Ussuriflemingites [ACCEPTED GENUS 276829:C5LGY nidx=null]
Ussuriidae
 - Ussuriidae Spath, 1930 [ACCEPTED FAMILY 272972:BSHD2 nidx=null]
 + Ussuriidae [ACCEPTED FAMILY 276829:BX86M nidx=null]
Ussurijuvenites
 - Ussurijuvenites Smyshlyaeva & Zakharov, 2012 [ACCEPTED GENUS 272972:BSMS3 nidx=null]
 + Ussurijuvenites [ACCEPTED GENUS 276829:C5LHN nidx=null]
Ussuriphyllites
 - Ussuriphyllites Zakharov, 1967 [ACCEPTED GENUS 272972:BSMS4 nidx=null]
 + Ussuriphyllites [ACCEPTED GENUS 276829:C5LJS nidx=null]
Ussuritaceae
 - Ussuritaceae Hyatt, 1900 [ACCEPTED SUPERFAMILY 272972:BSGX4 nidx=null]
 + Ussuritaceae [ACCEPTED SUPERFAMILY 276829:BWY3T nidx=null]
Ussurites
 - Ussurites (Hyatt, 1900) [ACCEPTED GENUS 272972:BSMS5 nidx=null]
 + Ussurites [ACCEPTED GENUS 276829:C5LK5 nidx=null]
Ussuritidae
 - Ussuritidae Hyatt, 1900 [ACCEPTED FAMILY 272972:BSHD3 nidx=null]
 + Ussuritidae [ACCEPTED FAMILY 276829:BX86P nidx=null]
Valanginites
 - Valanginites Sayn, 1910 [ACCEPTED GENUS 272972:BSMSC nidx=null]
 + Valanginites [ACCEPTED GENUS 276829:C5LZL nidx=null]
Valdedorsella
 - Valdedorsella Breistroffer, 1947 [ACCEPTED GENUS 272972:BSMSD nidx=null]
 + Valdedorsella [ACCEPTED GENUS 276829:C5LZT nidx=null]
Vallites
 - Vallites Ruzhencev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSMSG nidx=null]
 + Vallites [ACCEPTED GENUS 276829:C5M4Z nidx=null]
Vandaites
 - Vandaites Tozer, 1979 [ACCEPTED GENUS 272972:BSMSH nidx=null]
 + Vandaites [ACCEPTED GENUS 276829:C5M7J nidx=null]
Varioclymenia
 - Varioclymenia (Wedekind, 1908) [ACCEPTED GENUS 272972:BSMSN nidx=null]
 + Varioclymenia [ACCEPTED GENUS 276829:C5MD3 nidx=null]
Vascoceras
 - Vascoceras Choffat, 1898 [ACCEPTED GENUS 272972:BSMSR nidx=null]
 + Vascoceras [ACCEPTED GENUS 276829:C5MGF nidx=null]
Vascoceratidae
 - Vascoceratidae Douvillé, 1912 [ACCEPTED FAMILY 272972:BSHD4 nidx=null]
 + Vascoceratidae [ACCEPTED FAMILY 276829:BX876 nidx=null]
Vavilovites
 - Vavilovites Tozer, 1971 [ACCEPTED GENUS 272972:BSMSS nidx=null]
 + Vavilovites [ACCEPTED GENUS 276829:C5MNF nidx=null]
Veracruciceras
 - Veracruciceras Cantu-Chapa, 2006 [ACCEPTED GENUS 272972:BSMSW nidx=null]
 + Veracruciceras [ACCEPTED GENUS 276829:C5N27 nidx=null]
Veranadaites
 - Veranadaites Parent & Garrido, 2015 [ACCEPTED GENUS 272972:BSMSX nidx=null]
 + Veranadaites [ACCEPTED GENUS 276829:C5N2F nidx=null]
Verancoceras
 - Verancoceras Ruzhentsev & Bogoslovskaya, 1971 [ACCEPTED GENUS 272972:BSMSY nidx=null]
 + Verancoceras [ACCEPTED GENUS 276829:C5N2H nidx=null]
Vercherites
 - Vercherites Brühwiler et al., 2010 [ACCEPTED GENUS 272972:BSMT2 nidx=null]
 + Vercherites [ACCEPTED GENUS 276829:C5N2Q nidx=null]
Verneuilites
 - Verneuilites (Librovitch, 1939) [ACCEPTED GENUS 272972:BSMT4 nidx=null]
 + Verneuilites Bensh & Kireeva in Bensh, 1987 [SYNONYM GENUS 276829:7Q69L nidx=null parent=CV7P7]
 + Verneuilites [ACCEPTED GENUS 276829:C5N4N nidx=null]
Veruzhites
 - Veruzhites Leonova, 1988 [ACCEPTED GENUS 272972:BSMT7 nidx=null]
 + Veruzhites [ACCEPTED GENUS 276829:C5NBN nidx=null]
Vescotoceras
 - Vescotoceras Ruzhencev, 1962 [ACCEPTED GENUS 272972:BSMT8 nidx=null]
 + Vescotoceras [ACCEPTED GENUS 276829:C5NCM nidx=null]
Viadana (Viadana) piracicabae
 - Viadana (Viadana) piracicabae Piza, 1969 [ACCEPTED SPECIES 272972:9GV66 nidx=null]
 + Viadana (Viadana) piracicabae Piza, 1969 [ACCEPTED SPECIES 276829:D3M9Q nidx=null]
Vickohlerites
 - Vickohlerites Kummel, 1968 [ACCEPTED GENUS 272972:BSMT9 nidx=null]
 + Vickohlerites [ACCEPTED GENUS 276829:C5NHL nidx=null]
Vidrioceras
 - Vidrioceras (Böse, 1919) [SYNONYM GENUS 272972:BSN7S nidx=null parent=BSN7T]
 + Vidrioceras [ACCEPTED SUBGENUS 276829:C64NC nidx=null]
Vidrioceratidae
 - Vidrioceratidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSFY8 nidx=null]
 + Vidrioceratidae [ACCEPTED FAMILY 276829:BV9ZZ nidx=null]
Villania
 - Villania Till, 1909 [ACCEPTED GENUS 272972:BSHBM nidx=null]
 + Villania [ACCEPTED GENUS 276829:BX78D nidx=null]
Vinalesites
 - Vinalesites Thieuloy, 1966 [ACCEPTED GENUS 272972:BSMTB nidx=null]
 + Vinalesites [ACCEPTED GENUS 276829:C5NPJ nidx=null]
Virgatopavlovia
 - Virgatopavlovia Cope, 1978 [ACCEPTED GENUS 272972:BSMTD nidx=null]
 + Virgatopavlovia [ACCEPTED GENUS 276829:C5NTR nidx=null]
Virgatoptychites
 - Virgatoptychites Voronets, 1958 [ACCEPTED GENUS 272972:BSMTF nidx=null]
 + Virgatoptychites [ACCEPTED GENUS 276829:C5NTT nidx=null]
Virginoceras
 - Virginoceras Ruzhencev, 1960 [ACCEPTED GENUS 272972:BSMTG nidx=null]
 + Virginoceras [ACCEPTED GENUS 276829:C5NTZ nidx=null]
Vishnuites
 - Vishnuites (Diener, 1897) [ACCEPTED GENUS 272972:BSMTH nidx=null]
 + Vishnuites [ACCEPTED GENUS 276829:C5NY2 nidx=null]
Volgoceratoides
 - Volgoceratoides Mikhailova & Baraboshkin, 2002 [ACCEPTED GENUS 272972:BSMTL nidx=null]
 + Volgoceratoides [ACCEPTED GENUS 276829:C5P7N nidx=null]
Vorobyevites
 - Vorobyevites Shevyrev, 1995 [ACCEPTED GENUS 272972:BSMTP nidx=null]
 + Vorobyevites [ACCEPTED GENUS 276829:C5PCG nidx=null]
Waagenoceras
 - Waagenoceras Gemmellaro, 1887 [ACCEPTED GENUS 272972:BSMTR nidx=null]
 + Waagenoceras [ACCEPTED GENUS 276829:C5PF8 nidx=null]
Wailiceras
 - Wailiceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSMTS nidx=null]
 + Wailiceras [ACCEPTED GENUS 276829:C5PJH nidx=null]
Walkeria
 - Walkeria Buckman, 1902 [SYNONYM GENUS 272972:BSHBV nidx=null parent=6SX3]
 + Walkeria Fleming, 1823 [ACCEPTED GENUS 276829:BX7DY nidx=null]
Wangoceras
 - Wangoceras Tozer, 1980 [ACCEPTED GENUS 272972:BSMTT nidx=null]
 + Wangoceras [ACCEPTED GENUS 276829:C5PRY nidx=null]
Wangrenoceras
 - Wangrenoceras Yang & Yang, 1992 [ACCEPTED GENUS 272972:BSMTV nidx=null]
 + Wangrenoceras [ACCEPTED GENUS 276829:C5PS2 nidx=null]
Wasatchites
 - Wasatchites Mathews, 1929 [ACCEPTED GENUS 272972:BSMTW nidx=null]
 + Wasatchites [ACCEPTED GENUS 276829:C5PW6 nidx=null]
Watinoceras
 - Watinoceras Warren, 1930 [ACCEPTED GENUS 272972:BSMTX nidx=null]
 + Watinoceras [ACCEPTED GENUS 276829:C5PYC nidx=null]
Wedekindella
 - Wedekindella Schindewolf, 1928 [ACCEPTED GENUS 272972:BSMTZ nidx=null]
 + Wedekindella [ACCEPTED GENUS 276829:C5Q3Q nidx=null]
 + Wedekindella Dunbar & Henbest, 1930 [SYNONYM GENUS 276829:C5Q3R nidx=null parent=C5Q3V]
Weitschaticeras
 - Weitschaticeras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSMV3 nidx=null]
 + Weitschaticeras [ACCEPTED GENUS 276829:C5Q5X nidx=null]
Wellerites
 - Wellerites Plummer & Scott, 1937 [ACCEPTED GENUS 272972:BSMV4 nidx=null]
 + Wellerites [ACCEPTED GENUS 276829:C5Q7J nidx=null]
Welleritidae
 - Welleritidae Plummer & Scott, 1937 [ACCEPTED FAMILY 272972:BSHD5 nidx=null]
 + Welleritidae [ACCEPTED FAMILY 276829:BX88L nidx=null]
Wellsia
 - Wellsia Imlay, 1957 [ACCEPTED GENUS 272972:BSMV5 nidx=null]
 + Wellsia [ACCEPTED GENUS 276829:C5Q7Z nidx=null]
 + Wellsia Squires, 1958 [SYNONYM GENUS 276829:C5Q82 nidx=null parent=C5Q8S]
Wellsites
 - Wellsites House & Kirchgasser, 1993 [ACCEPTED GENUS 272972:BSMV6 nidx=null]
 + Wellsites [ACCEPTED GENUS 276829:C5Q8L nidx=null]
Wendtia
 - Wendtia Klug, 2002 [ACCEPTED GENUS 272972:BSG5X nidx=null]
 + Wendtia [ACCEPTED GENUS 276829:BVJDG nidx=null]
Werneroceras
 - Werneroceras (Wedekind, 1918) [ACCEPTED GENUS 272972:BSMV7 nidx=null]
 + Werneroceras [ACCEPTED GENUS 276829:C5QBF nidx=null]
Werneroceratidae
 - Werneroceratidae Erben, 1964 [ACCEPTED FAMILY 272972:BSHD6 nidx=null]
 + Werneroceratidae [ACCEPTED FAMILY 276829:BX88M nidx=null]
Wewokites
 - Wewokites Furnish & Beghtel, 1961 [ACCEPTED GENUS 272972:BSMVC nidx=null]
 + Wewokites [ACCEPTED GENUS 276829:C5QDP nidx=null]
Weyerella
 - Weyerella Bockwinkel & Ebbighausen, 2006 [ACCEPTED GENUS 272972:BSMVD nidx=null]
 + Weyerella [ACCEPTED GENUS 276829:C5QDW nidx=null]
Weyeroceras
 - Weyeroceras Klug, 2001 [ACCEPTED GENUS 272972:BSMVF nidx=null]
 + Weyeroceras [ACCEPTED GENUS 276829:C5QDX nidx=null]
Wiedeyoceras
 - Wiedeyoceras Miller, 1932 [ACCEPTED GENUS 272972:BSMVH nidx=null]
 + Wiedeyoceras [ACCEPTED GENUS 276829:C5QH4 nidx=null]
Wiedeyoceratidae
 - Wiedeyoceratidae Ruzhentsev & Bogoslovskaya, 1978 [ACCEPTED FAMILY 272972:BSHD7 nidx=null]
 + Wiedeyoceratidae [ACCEPTED FAMILY 276829:BX88P nidx=null]
Winchelloceras
 - Winchelloceras Ruzhencev, 1965 [ACCEPTED GENUS 272972:BSMVJ nidx=null]
 + Winchelloceras [ACCEPTED GENUS 276829:C5QKK nidx=null]
Winslowoceras
 - Winslowoceras Miller & Downs, 1948 [ACCEPTED GENUS 272972:BSMVK nidx=null]
 + Winslowoceras [ACCEPTED GENUS 276829:C5QKS nidx=null]
Witchellia
 - Witchellia Buckman, 1889 [ACCEPTED GENUS 272972:BSMVP nidx=null]
 + Witchellia [ACCEPTED GENUS 276829:C5QL3 nidx=null]
Wocklumeria
 - Wocklumeria Wedekind, 1918 [ACCEPTED GENUS 272972:BSMVS nidx=null]
 + Wocklumeria [ACCEPTED GENUS 276829:C5QLF nidx=null]
Wocklumeriaceae
 - Wocklumeriaceae Schindewolf, 1937 [ACCEPTED SUPERFAMILY 272972:BSGX5 nidx=null]
 + Wocklumeriaceae [ACCEPTED SUPERFAMILY 276829:BWY44 nidx=null]
Wocklumeriidae
 - Wocklumeriidae Schindewolf, 1937 [ACCEPTED FAMILY 272972:BSHD8 nidx=null]
 + Wocklumeriidae [ACCEPTED FAMILY 276829:BX88R nidx=null]
Wollemanniceras
 - Wollemanniceras (Breistroffer, 1947) [SYNONYM GENUS 272972:BSN7W nidx=null parent=BSN7X]
 + Wollemanniceras [ACCEPTED SUBGENUS 276829:C64P6 nidx=null]
Wopfingites
 - Wopfingites Wiedmann, 1970 [ACCEPTED GENUS 272972:BSMVT nidx=null]
 + Wopfingites [ACCEPTED GENUS 276829:C5QMY nidx=null]
Wordieoceras
 - Wordieoceras Tozer, 1971 [ACCEPTED GENUS 272972:BSMVV nidx=null]
 + Wordieoceras [ACCEPTED GENUS 276829:C5QN4 nidx=null]
Worthoceras
 - Worthoceras Adkins, 1928 [ACCEPTED GENUS 272972:BSMVW nidx=null]
 + Worthoceras [ACCEPTED GENUS 276829:C5QNS nidx=null]
Wrightia
 - Wrightia Gemmellaro, 1886 [SYNONYM GENUS 272972:BSG5Y nidx=null parent=BSLVX]
 + Wrightia Allman, 1872 [SYNONYM GENUS 276829:BVJF9 nidx=null parent=BVV66]
Wrightoceras
 - Wrightoceras (Reyment, 1954) [SYNONYM GENUS 272972:BSN7Z nidx=null parent=BSN84]
 + Wrightoceras [ACCEPTED SUBGENUS 276829:C64P8 nidx=null]
Wuerschmittia
 - Wuerschmittia Sch.Bip. ex Walp. [SYNONYM UNRANKED 272972:B48TX nidx=null parent=5FB8]
 + Wuerschmittia Sch.Bip. ex Walp. [SYNONYM UNRANKED 276829:D7YKJ nidx=null parent=5FB8]
Wyomingites
 - Wyomingites Hyatt, 1900 [ACCEPTED GENUS 272972:BSMVX nidx=null]
 + Wyomingites [ACCEPTED GENUS 276829:C5QQP nidx=null]
Xenoceltites
 - Xenoceltites Spath, 1930 [ACCEPTED GENUS 272972:BSMW2 nidx=null]
 + Xenoceltites [ACCEPTED GENUS 276829:C5QXR nidx=null]
Xenoceltitidae
 - Xenoceltitidae Spath, 1930 [ACCEPTED FAMILY 272972:BSHDB nidx=null]
 + Xenoceltitidae [ACCEPTED FAMILY 276829:BX89G nidx=null]
Xenodiscaceae
 - Xenodiscaceae Frech, 1902 [ACCEPTED SUPERFAMILY 272972:BSGX6 nidx=null]
 + Xenodiscaceae [ACCEPTED SUPERFAMILY 276829:BWY46 nidx=null]
Xenodiscidae
 - Xenodiscidae Frech, 1902 [ACCEPTED FAMILY 272972:BSHDC nidx=null]
 + Xenodiscidae [ACCEPTED FAMILY 276829:BX89R nidx=null]
Xenodiscoides
 - Xenodiscoides Spath, 1930 [ACCEPTED GENUS 272972:BSMW3 nidx=null]
 + Xenodiscoides [ACCEPTED GENUS 276829:C5QYT nidx=null]
Xenodiscus
 - Xenodiscus Waagen, 1879 [ACCEPTED GENUS 272972:BSMW4 nidx=null]
 + Xenodiscus [ACCEPTED GENUS 276829:C5QYW nidx=null]
Xenodiscus rotula
 - Xenodiscus rotula (Waagen, 1895) [SYNONYM SPECIES 272972:BSZN6 nidx=null parent=5C9LL]
 + Xenodiscus rotula Smith, 1932 [SYNONYM SPECIES 276829:D9P9M nidx=null parent=5C9LL]
Xenoprotrachyceras
 - Xenoprotrachyceras Wang, 1983 [ACCEPTED GENUS 272972:BSMW6 nidx=null]
 + Xenoprotrachyceras [ACCEPTED GENUS 276829:C5R34 nidx=null]
Xerticeras
 - Xerticeras Delanoy et al., 2013 [ACCEPTED GENUS 272972:BSMWC nidx=null]
 + Xerticeras [ACCEPTED GENUS 276829:C5R6K nidx=null]
Xiangulingites
 - Xiangulingites Zhao et al., 1978 [ACCEPTED GENUS 272972:BSMWD nidx=null]
 + Xiangulingites [ACCEPTED GENUS 276829:C5R7H nidx=null]
Xiaoqiaoceras
 - Xiaoqiaoceras Brayard & Bucher, 2008 [ACCEPTED GENUS 272972:BSMWF nidx=null]
 + Xiaoqiaoceras [ACCEPTED GENUS 276829:C5R7L nidx=null]
Ximenesia
 - Ximenesia Cav. [SYNONYM UNRANKED 272972:7NDHH nidx=null parent=86BT]
 + Ximenesia Cav. [SYNONYM UNRANKED 276829:BX7PQ nidx=null parent=86BT]
Xipheroceras
 - Xipheroceras Buckman, 1911 [ACCEPTED GENUS 272972:BSMWG nidx=null]
 + Xipheroceras [ACCEPTED GENUS 276829:C5R83 nidx=null]
Xiphidiola (Xiphidiola) concolor
 - Xiphidiola (Xiphidiola) concolor Bolívar, 1906 [ACCEPTED SPECIES 272972:7FXDX nidx=null]
 + Xiphidiola (Xiphidiola) concolor Bolívar, 1906 [ACCEPTED SPECIES 276829:DFGP2 nidx=null]
Xiphidiola concolor
 - Xiphidiola concolor Bolívar, 1906 [SYNONYM SPECIES 272972:7FXDZ nidx=null parent=7FXDX]
 + Xiphidiola concolor Bolívar, 1906 [SYNONYM SPECIES 276829:DFGNZ nidx=null parent=DFGP2]
Yabeiceras
 - Yabeiceras Tokunaga & Shimizu, 1926 [ACCEPTED GENUS 272972:BSMWK nidx=null]
 + Yabeiceras [ACCEPTED GENUS 276829:C5RDQ nidx=null]
Yakutosirenites
 - Yakutosirenites Tozer, 1994 [ACCEPTED GENUS 272972:BSMWL nidx=null]
 + Yakutosirenites [ACCEPTED GENUS 276829:C5RGK nidx=null]
Yangites
 - Yangites Balini & Zou, 2015 [ACCEPTED GENUS 272972:BSMWM nidx=null]
 + Yangites [ACCEPTED GENUS 276829:C5RHQ nidx=null]
Yinia hunanica
 - Yinia hunanica Liu & Li, 1995 [SYNONYM SPECIES 272972:5CRSM nidx=null parent=RHWR]
 + Yinia hunanica Liu & Li, 1995 [SYNONYM SPECIES 276829:DFGQ6 nidx=null parent=RHWR]
Yinoceras
 - Yinoceras Zhao, 1954 [ACCEPTED GENUS 272972:BSMWP nidx=null]
 + Yinoceras [ACCEPTED GENUS 276829:C5RLZ nidx=null]
Yokoyamaoceras
 - Yokoyamaoceras Wright & Matsumoto, 1954 [ACCEPTED GENUS 272972:BSMWQ nidx=null]
 + Yokoyamaoceras [ACCEPTED GENUS 276829:C5RMP nidx=null]
Yvesgalleticeras
 - Yvesgalleticeras Guex et al., 2005 [ACCEPTED GENUS 272972:BSMWS nidx=null]
 + Yvesgalleticeras [ACCEPTED GENUS 276829:C5RWG nidx=null]
Zadelsdorfia
 - Zadelsdorfia (Weyer, 1972) [ACCEPTED GENUS 272972:BSMWT nidx=null]
 + Zadelsdorfia [ACCEPTED GENUS 276829:C5RYL nidx=null]
Zaghouanites
 - Zaghouanites Rakús & Guex, 2002 [ACCEPTED GENUS 272972:BSMWW nidx=null]
 + Zaghouanites [ACCEPTED GENUS 276829:C5RYW nidx=null]
Zamaiceras
 - Zamaiceras Rakús & Guex, 2002 [ACCEPTED GENUS 272972:BSMWX nidx=null]
 + Zamaiceras [ACCEPTED GENUS 276829:C5S2H nidx=null]
Zapalia
 - Zapalia Leanza et al., 1990 [ACCEPTED GENUS 272972:BSMWZ nidx=null]
 + Zapalia [ACCEPTED GENUS 276829:C5S3D nidx=null]
Zenoites
 - Zenoites (Renz & Renz, 1948) [SYNONYM GENUS 272972:BSN8B nidx=null parent=BSN8C]
 + Zenoites [ACCEPTED SUBGENUS 276829:C64RH nidx=null]
Zenostephanus
 - Zenostephanus Callomon et al., 2009 [ACCEPTED GENUS 272972:BSMX2 nidx=null]
 + Zenostephanus [ACCEPTED GENUS 276829:C5S8G nidx=null]
Zephyroceras
 - Zephyroceras (Kullmann, 1962) [ACCEPTED GENUS 272972:BSMX3 nidx=null]
 + Zephyroceras [ACCEPTED GENUS 276829:C5S8J nidx=null]
Zestoceras
 - Zestoceras Tozer, 1994 [ACCEPTED GENUS 272972:BSMX6 nidx=null]
 + Zestoceras [ACCEPTED GENUS 276829:C5S8Z nidx=null]
Zetoceras
 - Zetoceras (Kovacs, 1939) [ACCEPTED GENUS 272972:BSMX8 nidx=null]
 + Zetoceras [ACCEPTED GENUS 276829:C5S9J nidx=null]
Zhonglupuceras
 - Zhonglupuceras Zhou, 1985 [ACCEPTED GENUS 272972:BSMXC nidx=null]
 + Zhonglupuceras [ACCEPTED GENUS 276829:C5SD5 nidx=null]
Ziyunites
 - Ziyunites Wang, 1978 [ACCEPTED GENUS 272972:BSMXD nidx=null]
 + Ziyunites [ACCEPTED GENUS 276829:C5SGV nidx=null]
Zuercherella
 - Zuercherella Casey, 1954 [ACCEPTED GENUS 272972:BSMXL nidx=null]
 + Zuercherella [ACCEPTED GENUS 276829:C5SP6 nidx=null]
Zuluiceras
 - Zuluiceras (van Hoepen, 1965) [SYNONYM GENUS 272972:BSN8D nidx=null parent=BSN8F]
 + Zuluiceras [ACCEPTED SUBGENUS 276829:C64RK nidx=null]
Zuluscaphites
 - Zuluscaphites Van Hoepen, 1955 [ACCEPTED GENUS 272972:BSMXN nidx=null]
 + Zuluscaphites [ACCEPTED GENUS 276829:C5SPG nidx=null]
Zygaena confluens
 - Zygaena confluens Holik & Reiss, 1932 [SYNONYM SPECIES 272972:BPVBP nidx=null parent=7KVRR]
 + Zygaena confluens Dziurzynski, 1902 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WF5 nidx=null parent=93SD2]
 + Zygaena confluens Dziurzynski, 1902 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WF6 nidx=null parent=93SFJ]
 + Zygaena confluens Dziurzynski, 1902 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WF7 nidx=null parent=93SJ6]
 + Zygaena confluens Oberthür, 1910 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WF8 nidx=null parent=93SHQ]
 + Zygaena confluens Burgeff, 1926 [SYNONYM SPECIES 276829:D9WF9 nidx=null parent=7L7RX]
 + Zygaena confluens Burgeff, 1926 [SYNONYM SPECIES 276829:D9WFB nidx=null parent=7L846]
 + Zygaena confluens Burgeff, 1926 [SYNONYM SPECIES 276829:D9WFC nidx=null parent=5LVQ2]
 + Zygaena confluens Burgeff, 1926 [SYNONYM SPECIES 276829:D9WFD nidx=null parent=94F9H]
 + Zygaena confluens Burgeff, 1926 [SYNONYM SPECIES 276829:D9WFF nidx=null parent=7L85L]
 + Zygaena confluens Koch, 1941 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFG nidx=null parent=93SFP]
 + Zygaena confluens Dziurzynski, 1908 [SYNONYM SPECIES 276829:D9WFH nidx=null parent=98VGZ]
 + Zygaena confluens Dziurzynski, 1908 [SYNONYM SPECIES 276829:D9WFJ nidx=null parent=944HJ]
 + Zygaena confluens Dziurzynski, 1908 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFK nidx=null parent=93SK6]
 + Zygaena confluens Dziurzynski, 1908 [SYNONYM SPECIES 276829:D9WFL nidx=null parent=5LVKS]
 + Zygaena confluens Oberthür, 1896 [SYNONYM SPECIES 276829:D9WFM nidx=null parent=5LV4H]
 + Zygaena confluens Oberthür, 1896 [SYNONYM SPECIES 276829:D9WFN nidx=null parent=5LVP9]
 + Zygaena confluens Oberthür, 1896 [SYNONYM SPECIES 276829:D9WFP nidx=null parent=5LV34]
 + Zygaena confluens Oberthür, 1896 [SYNONYM SPECIES 276829:D9WFQ nidx=null parent=95DBX]
 + Zygaena confluens Oberthür, 1896 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFR nidx=null parent=93SCF]
 + Zygaena confluens Spuler, 1906 [SYNONYM SPECIES 276829:D9WFS nidx=null parent=5LVDK]
 + Zygaena confluens Spuler, 1906 [SYNONYM SPECIES 276829:D9WFT nidx=null parent=5LV4H]
 + Zygaena confluens Dziurzynski, 1910 [SYNONYM SPECIES 276829:D9WFV nidx=null parent=5LVPB]
 + Zygaena confluens Burgeff, 1906 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFW nidx=null parent=93SCG]
 + Zygaena confluens Burgeff, 1906 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFX nidx=null parent=93SFH]
 + Zygaena confluens Dziurzynski, 1906 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFY nidx=null parent=93SFH]
 + Zygaena confluens Dziurzynski, 1906 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WFZ nidx=null parent=93SK6]
 + Zygaena confluens Reiss, 1964 [SYNONYM SPECIES 276829:D9WG2 nidx=null parent=5LVCR]
 + Zygaena confluens Reiss, 1931 [SYNONYM SPECIES 276829:D9WG3 nidx=null parent=5LVBK]
 + Zygaena confluens Holik & Reiss, 1932 [SYNONYM SPECIES 276829:D9WG4 nidx=null parent=7KVRR]
 + Zygaena confluens Reiss, 1931 [SYNONYM SPECIES 276829:D9WG5 nidx=null parent=5LV8S]
 + Zygaena confluens Holik & Reiss, 1932 [AMBIGUOUS_SYNONYM SPECIES 276829:D9WG6 nidx=null parent=93S9C]
 + Zygaena confluens [École Bordelaise], 1933 [SYNONYM SPECIES 276829:D9WG7 nidx=null parent=5LV2H]
 + Zygaena confluens Burgeff, 1914 [SYNONYM SPECIES 276829:D9WG8 nidx=null parent=98VJW]
 + Zygaena confluens Burgeff, 1914 [SYNONYM SPECIES 276829:D9WG9 nidx=null parent=944GG]
 + Zygaena confluens Burgeff, 1914 [SYNONYM SPECIES 276829:D9WGB nidx=null parent=7KW39]
 + Zygaena confluens Rocci, 1914 [SYNONYM SPECIES 276829:D9WGC nidx=null parent=7KW4R]