Acanthascinae
 - Acanthascinae [ACCEPTED SUBFAMILY 9910:B7X7G nidx=null]
 + Acanthascinae Schulze, 1897 [SYNONYM SUBFAMILY 9911:BDZ5B nidx=null parent=84KR4]
 + Acanthascinae Schulze, 1897 [PROVISIONALLY_ACCEPTED SUBFAMILY 9911:BDZ5C nidx=null]
Acanthochites sibogae
 - Acanthochites sibogae Thiele, 1909 [SYNONYM SPECIES 9910:64CFZ nidx=null parent=64DVD]
 + Acanthochites sibogae Thiele, 1910 [SYNONYM SPECIES 9911:BFH49 nidx=null parent=BFFFH]
Acanthochitona sibogae
 - Acanthochitona sibogae (Thiele, 1909) [ACCEPTED SPECIES 9910:64DVD nidx=null]
 + Acanthochitona sibogae (Thiele, 1910) [ACCEPTED SPECIES 9911:BFFFH nidx=null]
Acanthocreadium
 - Acanthocreadium [ACCEPTED GENUS 9910:7ZLD8 nidx=null]
 + Acanthocreadium Mikailov, 1969 [PROVISIONALLY_ACCEPTED GENUS 9911:BDZ9L nidx=null]
Acratia (Cooperuna)
 - Acratia (Cooperuna) [ACCEPTED SUBGENUS 9910:8PNYK nidx=null]
 + Acratia (Cooperuna) Gruendel, 1962 [SYNONYM SUBGENUS 9911:BF4VM nidx=null parent=85BJT]
 + Acratia (Cooperuna) Gruendel, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4VN nidx=null]
Actinastraeidae
 - Actinastraeidae [ACCEPTED FAMILY 9910:B8WPH nidx=null]
 + Actinastraeidae Alloiteau, 1952 [SYNONYM FAMILY 9911:BDYQY nidx=null parent=85836]
Actinocythereis (Ponticocythereis)
 - Actinocythereis (Ponticocythereis) [ACCEPTED SUBGENUS 9910:9CLRG nidx=null]
 + Actinocythereis (Ponticocythereis) Mckenzie, 1967 [SYNONYM SUBGENUS 9911:BFFRD nidx=null parent=84SQ7]
 + Actinocythereis (Ponticocythereis) Mckenzie, 1967 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFRF nidx=null]
Acyrthosiphon (Acyrthosiphon) gossypicola
 - Acyrthosiphon (Acyrthosiphon) gossypicola [ACCEPTED SPECIES 9910:B6T67 nidx=null]
 + Acyrthosiphon (Acyrthosiphon) gossypicola [ACCEPTED SPECIES 9911:BFHV6 nidx=null]
Acyrthosiphon (Acyrthosiphon) vasiljevi
 - Acyrthosiphon (Acyrthosiphon) vasiljevi [ACCEPTED SPECIES 9910:B93QS nidx=null]
 + Acyrthosiphon (Acyrthosiphon) vasiljevi [ACCEPTED SPECIES 9911:BFHVF nidx=null]
Acyrthosiphon (Metopolophium)
 - Acyrthosiphon (Metopolophium) Mordvilko, 1914 [SYNONYM INFRAGENERIC_NAME 9910:8QXF2 nidx=null parent=B7WHT]
 + Acyrthosiphon (Metopolophium) Mordvilko, 1914 [SYNONYM SUBGENUS 9911:BDWJ6 nidx=null parent=B7WHT]
 + Acyrthosiphon (Metopolophium) Mordvilko, 1914 [SYNONYM INFRAGENERIC_NAME 9911:BDWJ7 nidx=null parent=B7WHT]
Aenone
 - Aenone [ACCEPTED GENUS 9910:PPD nidx=null]
 + Aenone Risso, 1826 [PROVISIONALLY_ACCEPTED GENUS 9911:BDZKL nidx=null]
 + Aenone Lamarck, 1818 [SYNONYM GENUS 9911:BDZKM nidx=null parent=84PPG]
Aequipecten diaphana
 - Aequipecten diaphana (Dubois, 1831) [ACCEPTED SPECIES 9910:B6FX9 nidx=null]
 + Aequipecten diaphana (Du Bois de Montpéreux, 1831) [ACCEPTED SPECIES 9911:BHS4C nidx=null]
Aerothyris smithi
 - Aerothyris smithi Allan, 1939 [SYNONYM SPECIES 9910:8G2VJ nidx=null parent=DVSX]
 + Aerothyris smithi (Pfeffer, 1886) [SYNONYM SPECIES 9911:BDVXQ nidx=null parent=DVSX]
Agabiformius aharonii
 - Agabiformius aharonii Verhoeff, 1927 [SYNONYM SPECIES 9910:65J37 nidx=null parent=65J49]
 + Agabiformius aharonii (Verhoeff, 1917) [SYNONYM SPECIES 9911:BFKPD nidx=null parent=65J49]
Agassizia (Agassizia)
 - Agassizia (Agassizia) [ACCEPTED SUBGENUS 9910:QL2 nidx=null]
 + Agassizia (Agassizia) Valenciennes, 1846 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXRM nidx=null]
 + Agassizia (Agassizia) Valenciennes, 1846 [SYNONYM SUBGENUS 9911:BDXRN nidx=null parent=7NN8G]
Agassizia (Anisaster)
 - Agassizia (Anisaster) [ACCEPTED SUBGENUS 9910:WBV nidx=null]
 + Agassizia (Anisaster) Pomel, 1886 [SYNONYM SUBGENUS 9911:BF2DD nidx=null parent=7NPWP]
 + Agassizia (Anisaster) Pomel, 1886 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2DF nidx=null]
Ahlumia
 - Ahlumia [ACCEPTED GENUS 9910:7ZLFF nidx=null]
 + Ahlumia Daniels & Kemper, 1995 [PROVISIONALLY_ACCEPTED GENUS 9911:BDZZ7 nidx=null]
Alcyonium
 - Alcyonium Linnaeus, 1758 [PROVISIONALLY_ACCEPTED GENUS 9910:87D6B nidx=null]
 + Alcyonium Pallas, 1766 [SYNONYM GENUS 9911:BDV7K nidx=null parent=7NQZF]
Allurus mollis
 - Allurus mollis Friend, 1911 [SYNONYM SPECIES 9910:C2DG nidx=null parent=38W4Q]
 + Allurus mollis Friend, 1913 [SYNONYM SPECIES 9911:BFKZC nidx=null parent=38W4Q]
Alveolina subgen. Alveolina
 - Alveolina subgen. Alveolina [ACCEPTED SUBGENUS 9910:7Y396 nidx=null]
 + Alveolina subgen. Alveolina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF25M nidx=null]
 + Alveolina subgen. Alveolina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BF25N nidx=null parent=7Y397]
Alveolina subgen. Eoalveolinella
 - Alveolina subgen. Eoalveolinella [ACCEPTED SUBGENUS 9910:B946M nidx=null]
 + Alveolina subgen. Eoalveolinella A. Silvestri, 1928 [SYNONYM SUBGENUS 9911:BFJJK nidx=null parent=7Y397]
 + Alveolina subgen. Eoalveolinella A. Silvestri, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJL nidx=null]
Alveolina subgen. Fasciolites
 - Alveolina subgen. Fasciolites [ACCEPTED SUBGENUS 9910:7ZV5V nidx=null]
 + Alveolina subgen. Fasciolites A. Silvestri, 1928 [SYNONYM SUBGENUS 9911:BFJKK nidx=null parent=7Y397]
 + Alveolina subgen. Fasciolites A. Silvestri, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJKL nidx=null]
Alveolina subgen. Flosculina
 - Alveolina subgen. Flosculina [ACCEPTED SUBGENUS 9910:7ZV6T nidx=null]
 + Alveolina subgen. Flosculina Schwager, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJKV nidx=null]
 + Alveolina subgen. Flosculina Schwager, 1883 [SYNONYM SUBGENUS 9911:BFJKW nidx=null parent=7Y397]
Alveolina subgen. Glomalveolina
 - Alveolina subgen. Glomalveolina [ACCEPTED SUBGENUS 9910:7ZVB7 nidx=null]
 + Alveolina subgen. Glomalveolina Hottinger, 1960 [SYNONYM SUBGENUS 9911:BF6YT nidx=null parent=7ZVB8]
 + Alveolina subgen. Glomalveolina Hottinger, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6YV nidx=null]
Alveolina subgen. Praealveolina
 - Alveolina subgen. Praealveolina [ACCEPTED SUBGENUS 9910:7ZWG2 nidx=null]
 + Alveolina subgen. Praealveolina Silvestri, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGXD nidx=null]
 + Alveolina subgen. Praealveolina Silvestri, 1948 [SYNONYM SUBGENUS 9911:BFGXF nidx=null parent=7ZWG3]
Amaea
 - Amaea H. Adams & A. Adams, 1853 [PROVISIONALLY_ACCEPTED GENUS 9910:9G2MZ nidx=null]
 + Amaea Malmgren, 1866 [SYNONYM GENUS 9911:BDZKC nidx=null parent=84LBD]
Ambostracon (Patagonacythere)
 - Ambostracon (Patagonacythere) [ACCEPTED SUBGENUS 9910:6JHF nidx=null]
 + Ambostracon (Patagonacythere) Hartmann, 1962 [SYNONYM SUBGENUS 9911:BFFKJ nidx=null parent=84RTR]
 + Ambostracon (Patagonacythere) Hartmann, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFKK nidx=null]
Ammodiscus
 - Ammodiscus Reuss, 1862 [PROVISIONALLY_ACCEPTED GENUS 9910:B7XJ8 nidx=null]
 - Ammodiscus Reuss, 1862 [PROVISIONALLY_ACCEPTED GENUS 9910:B8X9X nidx=null]
 + Ammodiscus Carpenter in Carpenter & Jeffreys, 1871 [SYNONYM GENUS 9911:BDZKZ nidx=null parent=7PMWY]
Ammonactis
 - Ammonactis [ACCEPTED GENUS 9910:7ZLH2 nidx=null]
 + Ammonactis Verrill, 1865 [PROVISIONALLY_ACCEPTED GENUS 9911:BF278 nidx=null]
Amnicola retromargo
 - Amnicola retromargo F. G. Thompson, 1868 [SYNONYM SPECIES 9910:9XG48 nidx=null parent=3WSLH]
 + Amnicola retromargo F. G. Thompson, 1968 [SYNONYM SPECIES 9911:BFLGG nidx=null parent=3WSLH]
Amplaria
 - Amplaria Chamberlin, 1941 [PROVISIONALLY_ACCEPTED GENUS 9910:87D9F nidx=null]
 + Amplaria Knight-Jones, 1973 [SYNONYM GENUS 9911:BDZMC nidx=null parent=84LJ9]
Anatipopecten
 - Anatipopecten [ACCEPTED GENUS 9910:B48C7 nidx=null]
 + Anatipopecten Hertlein, 1936 [PROVISIONALLY_ACCEPTED GENUS 9911:BG388 nidx=null]
Anaulocidaris
 - Anaulocidaris [ACCEPTED GENUS 9910:VD7 nidx=null]
 + Anaulocidaris Zittel, 1879 [PROVISIONALLY_ACCEPTED GENUS 9911:BF29J nidx=null]
Ancylocidaris
 - Ancylocidaris [ACCEPTED GENUS 9910:VLX nidx=null]
 + Ancylocidaris Miller, 1929 [PROVISIONALLY_ACCEPTED GENUS 9911:BF29Q nidx=null]
Androniscus montellensis
 - Androniscus montellensis Verhoeff, 1930 [SYNONYM SPECIES 9910:66NTX nidx=null parent=66NTV]
 + Androniscus montellensis Verhoeff, 1932 [SYNONYM SPECIES 9911:BFLRT nidx=null parent=66NTV]
Androniscus roseus borgotarensis
 - Androniscus roseus borgotarensis Verhoeff, 1935 [ACCEPTED SUBSPECIES 9910:5DH6H nidx=null]
 + Androniscus roseus borgotarensis Verhoeff, 1936 [ACCEPTED SUBSPECIES 9911:BHJM9 nidx=null]
Androniscus strouhali
 - Androniscus strouhali Verhoeff, 1928 [SYNONYM SPECIES 9910:66NTF nidx=null parent=66NSQ]
 + Androniscus strouhali Verhoeff, 1929 [SYNONYM SPECIES 9911:BFLRV nidx=null parent=66NSQ]
Androniscus subterraneus medius
 - Androniscus subterraneus medius Verhoeff, 1930 [SYNONYM SUBSPECIES 9910:5FLWX nidx=null parent=66NTV]
 + Androniscus subterraneus medius Verhoeff, 1929 [SYNONYM SUBSPECIES 9911:BHJMB nidx=null parent=66NSQ]
Androniscus subterraneus strouhali
 - Androniscus subterraneus strouhali Verhoeff, 1928 [SYNONYM SUBSPECIES 9910:5FLX4 nidx=null parent=66NSQ]
 + Androniscus subterraneus strouhali Verhoeff, 1929 [SYNONYM SUBSPECIES 9911:BHJMC nidx=null parent=66NSQ]
Anmarginulina
 - Anmarginulina [ACCEPTED GENUS 9910:7ZTDG nidx=null]
 + Anmarginulina Nikitenko, 2000 [PROVISIONALLY_ACCEPTED GENUS 9911:BF2F2 nidx=null]
Anomalina subgen. Anomalina
 - Anomalina subgen. Anomalina [ACCEPTED SUBGENUS 9910:B6NZ7 nidx=null]
 + Anomalina subgen. Anomalina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BDXYW nidx=null parent=B8W9T]
 + Anomalina subgen. Anomalina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXYX nidx=null]
Anomalina subgen. Gavelinella
 - Anomalina subgen. Gavelinella [ACCEPTED SUBGENUS 9910:4MHH nidx=null]
 + Anomalina subgen. Gavelinella Vasilenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6TQ nidx=null]
 + Anomalina subgen. Gavelinella Vasilenko, 1954 [SYNONYM SUBGENUS 9911:BF6TR nidx=null parent=7PGMD]
Anomalina subgen. Pseudovalvulineria
 - Anomalina subgen. Pseudovalvulineria [ACCEPTED SUBGENUS 9910:7ZWP4 nidx=null]
 + Anomalina subgen. Pseudovalvulineria Vasilenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJZC nidx=null]
 + Anomalina subgen. Pseudovalvulineria Vasilenko, 1954 [SYNONYM SUBGENUS 9911:BFJZD nidx=null parent=7PGMD]
Anomalinella subgen. Preanomalinella
 - Anomalinella subgen. Preanomalinella [ACCEPTED SUBGENUS 9910:B94B8 nidx=null]
 + Anomalinella subgen. Preanomalinella S.K.Singh, 1973 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJY6 nidx=null]
 + Anomalinella subgen. Preanomalinella S.K.Singh, 1973 [SYNONYM SUBGENUS 9911:BFJY7 nidx=null parent=7NQ3Q]
Anoplocopea ischiana
 - Anoplocopea ischiana Verhoeff, 1943 [SYNONYM SPECIES 9910:5V8S2 nidx=null parent=QCFC]
 + Anoplocopea ischiana Verhoeff, 1942 [SYNONYM SPECIES 9911:BFL2K nidx=null parent=BFP2D]
Anoploiulus apfelbecki
 - Anoploiulus apfelbecki [SYNONYM SPECIES 9910:7RF36 nidx=null parent=7SS3M]
 + Anoploiulus apfelbecki (Verhoeff, 1898) [SYNONYM SPECIES 9911:BFLXG nidx=null parent=7SS3M]
Anotocelis
 - Anotocelis [ACCEPTED GENUS 9910:X48 nidx=null]
 + Anotocelis Diesing, 1862 [PROVISIONALLY_ACCEPTED GENUS 9911:BF2GY nidx=null]
Antiphora
 - Antiphora Nützel, 1997 [ACCEPTED GENUS 9910:7NZ35 nidx=null]
 + Antiphora Nützel, 1998 [ACCEPTED GENUS 9911:BF2KJ nidx=null]
Antiphora ganensis
 - Antiphora ganensis Nützel, 1997 [ACCEPTED SPECIES 9910:7Q5L3 nidx=null]
 + Antiphora ganensis Nützel, 1998 [ACCEPTED SPECIES 9911:BFM23 nidx=null]
Antroherposoma vignai
 - Antroherposoma vignai [sic] [SYNONYM SPECIES 9910:9GNF2 nidx=null parent=4K3HS]
 + Antroherposoma vignai Strasser, 1970 [SYNONYM SPECIES 9911:BGTWT nidx=null parent=4K3HS]
Aperostoma (Austrocyclotus) stramineum
 - Aperostoma (Austrocyclotus) stramineum (Reeve, 1843) [SYNONYM SPECIES 9910:7Q5TF nidx=null parent=7SB82]
 + Aperostoma (Austrocyclotus) stramineum (G. B. Sowerby I, 1843) [SYNONYM SPECIES 9911:BFM3H nidx=null parent=BH5LT]
Apherusa borealis
 - Apherusa borealis Sars, 1893 [SYNONYM SPECIES 9910:FD5D nidx=null parent=FD5F]
 + Apherusa borealis (Boeck, 1871) [SYNONYM SPECIES 9911:BFM3X nidx=null parent=FD5F]
Aphis (Aphis) alienus
 - Aphis (Aphis) alienus [ACCEPTED SPECIES 9910:FDRN nidx=null]
 + Aphis (Aphis) alienus [ACCEPTED SPECIES 9911:BFLKQ nidx=null]
Aphis (Aphis) cerasi
 - Aphis (Aphis) cerasi [ACCEPTED SPECIES 9910:B9B5V nidx=null]
 + Aphis (Aphis) cerasi [ACCEPTED SPECIES 9911:BFLKZ nidx=null]
Aphis (Aphis) ecballii
 - Aphis (Aphis) ecballii [ACCEPTED SPECIES 9910:B3P2R nidx=null]
 + Aphis (Aphis) ecballii [ACCEPTED SPECIES 9911:BFLLB nidx=null]
Aphis (Aphis) gerardianae
 - Aphis (Aphis) gerardianae [ACCEPTED SPECIES 9910:FDWT nidx=null]
 + Aphis (Aphis) gerardianae [ACCEPTED SPECIES 9911:BFK7Z nidx=null]
Aphis (Aphis) leonulii
 - Aphis (Aphis) leonulii [ACCEPTED SPECIES 9910:B83F4 nidx=null]
 + Aphis (Aphis) leonulii [ACCEPTED SPECIES 9911:BFLLM nidx=null]
Aphis (Aphis) rubicolens
 - Aphis (Aphis) rubicolens [ACCEPTED SPECIES 9910:B3P3W nidx=null]
 + Aphis (Aphis) rubicolens [ACCEPTED SPECIES 9911:BFLM6 nidx=null]
Aphis (Aphis) spiraephaga
 - Aphis (Aphis) spiraephaga [ACCEPTED SPECIES 9910:67LPG nidx=null]
 + Aphis (Aphis) spiraephaga [ACCEPTED SPECIES 9911:BFBDW nidx=null]
Aphis (Aphis) ucrainensis
 - Aphis (Aphis) ucrainensis [ACCEPTED SPECIES 9910:5VNF3 nidx=null]
 + Aphis (Aphis) ucrainensis [ACCEPTED SPECIES 9911:BFK99 nidx=null]
Aphis chenophyllum-canadensis
 - Aphis chenophyllum-canadensis Rafinesque, 1817 [SYNONYM SPECIES 9910:B3Q3B nidx=null parent=8QTSM]
 + Aphis chenophyllum-canadensis Rafinesque, 1817 [SYNONYM SPECIES 9911:BFM42 nidx=null parent=8QTSM]
Aphis cracivora
 - Aphis cracivora Koch, 1854 [SYNONYM SPECIES 9910:B6TJ8 nidx=null parent=5DJMH]
 + Aphis cracivora Koch, 1854 [SYNONYM SPECIES 9911:BFK7P nidx=null parent=5DJMH]
Aporodesmus
 - Aporodesmus Porat, 1894 [PROVISIONALLY_ACCEPTED GENUS 9910:B7XKV nidx=null]
 - Aporodesmus Porat, 1894 [PROVISIONALLY_ACCEPTED GENUS 9910:B8XD2 nidx=null]
 - Aporodesmus Porat, 1894 [PROVISIONALLY_ACCEPTED GENUS 9910:B8XD3 nidx=null]
 + Aporodesmus Pocock, 1895 [PROVISIONALLY_ACCEPTED GENUS 9911:BDZRH nidx=null]
 + Aporodesmus Pocock, 1895 [SYNONYM GENUS 9911:BDZRJ nidx=null parent=7NX9F]
Apseudes sculptus
 - Apseudes sculptus Pfeffer, 1888 [ACCEPTED SPECIES 9910:FY6D nidx=null]
 + Apseudes sculptus Pfeffer, 1889 [ACCEPTED SPECIES 9911:BFLTS nidx=null]
Arca (Anadara)
 - Arca (Anadara) [ACCEPTED SUBGENUS 9910:62C9X nidx=null]
 + Arca (Anadara) Gray, 1847 [SYNONYM SUBGENUS 9911:BDV85 nidx=null parent=7NNYQ]
Arca (Scapharca)
 - Arca (Scapharca) [ACCEPTED SUBGENUS 9910:B92CV nidx=null]
 + Arca (Scapharca) Gray, 1847 [SYNONYM SUBGENUS 9911:BFG56 nidx=null parent=7NNYQ]
Archaediscus subgen. Archaediscus
 - Archaediscus subgen. Archaediscus [ACCEPTED SUBGENUS 9910:7ZP79 nidx=null]
 + Archaediscus subgen. Archaediscus Brady, 1873 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2QF nidx=null]
 + Archaediscus subgen. Archaediscus Brady, 1873 [SYNONYM SUBGENUS 9911:BF2QG nidx=null parent=7ZP7B]
Archaediscus subgen. Hemiarchaediscus
 - Archaediscus subgen. Hemiarchaediscus [ACCEPTED SUBGENUS 9910:B947R nidx=null]
 + Archaediscus subgen. Hemiarchaediscus Browne, 1977 [SYNONYM SUBGENUS 9911:BFJMX nidx=null parent=7ZP7B]
 + Archaediscus subgen. Hemiarchaediscus Browne, 1977 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJMY nidx=null]
Archaediscus subgen. Neoarchaediscus
 - Archaediscus subgen. Neoarchaediscus [ACCEPTED SUBGENUS 9910:7ZVWD nidx=null]
 + Archaediscus subgen. Neoarchaediscus Bozorgnia, 1973 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCWD nidx=null]
 + Archaediscus subgen. Neoarchaediscus Bozorgnia, 1973 [SYNONYM SUBGENUS 9911:BFCWF nidx=null parent=7ZVWF]
Archaediscus subgen. Rugosoarchaediscus
 - Archaediscus subgen. Rugosoarchaediscus [ACCEPTED SUBGENUS 9910:7ZWVZ nidx=null]
 + Archaediscus subgen. Rugosoarchaediscus Bozorgnia, 1973 [SYNONYM SUBGENUS 9911:BFHDF nidx=null parent=858WQ]
 + Archaediscus subgen. Rugosoarchaediscus Bozorgnia, 1973 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHDG nidx=null]
Arenobulimina subgen. Arenobulimina
 - Arenobulimina subgen. Arenobulimina [ACCEPTED SUBGENUS 9910:7ZQ65 nidx=null]
 + Arenobulimina subgen. Arenobulimina Cushman, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2R9 nidx=null]
 + Arenobulimina subgen. Arenobulimina Cushman, 1927 [SYNONYM SUBGENUS 9911:BF2RB nidx=null parent=7ZQ66]
Arenobulimina subgen. Columnella
 - Arenobulimina subgen. Columnella [ACCEPTED SUBGENUS 9910:3SNL nidx=null]
 + Arenobulimina subgen. Columnella Voloshina, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4SL nidx=null]
 + Arenobulimina subgen. Columnella Voloshina, 1965 [SYNONYM SUBGENUS 9911:BF4SM nidx=null parent=7ZXFT]
Arenobulimina subgen. Pasternakia
 - Arenobulimina subgen. Pasternakia [ACCEPTED SUBGENUS 9910:B949S nidx=null]
 + Arenobulimina subgen. Pasternakia Voloshinova, 1972 [SYNONYM SUBGENUS 9911:BFJWG nidx=null parent=7ZQ66]
 + Arenobulimina subgen. Pasternakia Voloshinova, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJWH nidx=null]
Armadillidium brentanum
 - Armadillidium brentanum Verhoeff, 1931 [ACCEPTED SPECIES 9910:GRCV nidx=null]
 + Armadillidium brentanum Verhoeff, 1932 [ACCEPTED SPECIES 9911:BFM2R nidx=null]
Armadillidium klaptoczi
 - Armadillidium klaptoczi Arcangeli, 1924 [ACCEPTED SPECIES 9910:GRFS nidx=null]
 + Armadillidium klaptoczi Verhoeff, 1908 [ACCEPTED SPECIES 9911:BFM2W nidx=null]
Armadillidium rhenanum
 - Armadillidium rhenanum Verhoeff, 1917 [SYNONYM SPECIES 9910:5VSQX nidx=null parent=GRHN]
 + Armadillidium rhenanum Verhoeff, 1919 [SYNONYM SPECIES 9911:BFMFF nidx=null parent=GRHN]
Armenica (Armenica) huet
 - Armenica (Armenica) huet (Mortillet, 1854) [SYNONYM SPECIES 9910:GS48 nidx=null parent=GS4N]
 + Armenica (Armenica) huet (Mortillet, 1853) [SYNONYM SPECIES 9911:BFMFN nidx=null parent=BFMFM]
Armenica disjuncta
 - Armenica disjuncta (Mortillet, 1854) [ACCEPTED SPECIES 9910:GS4J nidx=null]
 + Armenica disjuncta (Mortillet, 1853) [ACCEPTED SPECIES 9911:BFMFL nidx=null]
Armenica disjuncta disjuncta
 - Armenica disjuncta disjuncta (Mortillet, 1854) [ACCEPTED SUBSPECIES 9910:5DKXV nidx=null]
 + Armenica disjuncta disjuncta (Mortillet, 1853) [ACCEPTED SUBSPECIES 9911:BHJNR nidx=null]
Armenica huet
 - Armenica huet (Mortillet, 1854) [ACCEPTED SPECIES 9910:GS4N nidx=null]
 + Armenica huet (Mortillet, 1853) [ACCEPTED SPECIES 9911:BFMFM nidx=null]
Artemisina nigra
 - Artemisina nigra sensu Alcolado & Gotera, 1986 [SYNONYM SPECIES 9910:5VSMV nidx=null parent=GX5C]
 + Artemisina nigra (Duchassaing & Michelotti, 1864) [SYNONYM SPECIES 9911:BFM4X nidx=null parent=GX5C]
Aryandes
 - Aryandes [ACCEPTED GENUS 9910:33JF nidx=null]
 + Aryandes Kinberg, 1867 [PROVISIONALLY_ACCEPTED GENUS 9911:BF2VD nidx=null]
Asterina folium
 - Asterina folium (Lütken, 1860) [SYNONYM SPECIES 9910:5W6CM nidx=null parent=HT53]
 + Asterina folium (Lütken, 1859) [SYNONYM SPECIES 9911:BFMDP nidx=null parent=HT53]
Astraea (Heliastraea)
 - Astraea (Heliastraea) [ACCEPTED SUBGENUS 9910:85FBV nidx=null]
 + Astraea (Heliastraea) Milne Edwards & Haime, 1857 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGB5F nidx=null]
 + Astraea (Heliastraea) Milne Edwards & Haime, 1857 [SYNONYM SUBGENUS 9911:BGB5G nidx=null parent=84PQJ]
Astrea
 - Astrea Lamarck, 1801 [PROVISIONALLY_ACCEPTED GENUS 9910:87DSL nidx=null]
 + Astrea [sic] [SYNONYM GENUS 9911:BDVB4 nidx=null parent=7NPXZ]
Astrorhiza subgen. Astrorhizoides
 - Astrorhiza subgen. Astrorhizoides [ACCEPTED SUBGENUS 9910:34NM nidx=null]
 + Astrorhiza subgen. Astrorhizoides Shchedrina, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF32Y nidx=null]
 + Astrorhiza subgen. Astrorhizoides Shchedrina, 1969 [SYNONYM SUBGENUS 9911:BF32Z nidx=null parent=7NRMM]
Ataphridae
 - Ataphridae [ACCEPTED FAMILY 9910:7NWCH nidx=null]
 + Ataphridae Cossmann, 1915 [PROVISIONALLY_ACCEPTED FAMILY 9911:BDYS5 nidx=null]
Ataxophragmium subgen. Opertum
 - Ataxophragmium subgen. Opertum [ACCEPTED SUBGENUS 9910:7ZW2N nidx=null]
 + Ataxophragmium subgen. Opertum Voloshina, 1972 [SYNONYM SUBGENUS 9911:BFFGY nidx=null parent=7ZW2P]
 + Ataxophragmium subgen. Opertum Voloshina, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFGZ nidx=null]
Atelospatangus (Semipetalion)
 - Atelospatangus (Semipetalion) [ACCEPTED SUBGENUS 9910:8G64 nidx=null]
 + Atelospatangus (Semipetalion) Szörényi, 1963 [SYNONYM SUBGENUS 9911:BFHHG nidx=null parent=7Q8G3]
 + Atelospatangus (Semipetalion) Szörényi, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHHH nidx=null]
Attheyella (Neomrazekiella) nordenskioldii
 - Attheyella (Neomrazekiella) nordenskioldii (Lilljeborg, 1902) [PROVISIONALLY_ACCEPTED SPECIES 9910:87WCG nidx=null]
 + Attheyella (Neomrazekiella) nordenskioldii (Borutzky, 1952) [PROVISIONALLY_ACCEPTED SPECIES 9911:BFKMN nidx=null]
Aulacorthum (Aulacorthum) sedens
 - Aulacorthum (Aulacorthum) sedens [ACCEPTED SPECIES 9910:B83Z9 nidx=null]
 + Aulacorthum (Aulacorthum) sedens [ACCEPTED SPECIES 9911:BFMLM nidx=null]
Autolytus (Autolytus)
 - Autolytus (Autolytus) [ACCEPTED SUBGENUS 9910:36LP nidx=null]
 + Autolytus (Autolytus) Grube, 1850 [SYNONYM SUBGENUS 9911:BDZY4 nidx=null parent=84QNJ]
 + Autolytus (Autolytus) Grube, 1850 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZY5 nidx=null]
Autolytus (Regulatus)
 - Autolytus (Regulatus) [ACCEPTED SUBGENUS 9910:B94BV nidx=null]
 + Autolytus (Regulatus) Imajima, 1966 [SYNONYM SUBGENUS 9911:BFK23 nidx=null parent=84SPP]
 + Autolytus (Regulatus) Imajima, 1966 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK24 nidx=null]
Baccigerinae
 - Baccigerinae [ACCEPTED SUBFAMILY 9910:8YR32 nidx=null]
 + Baccigerinae Yamaguti, 1958 [PROVISIONALLY_ACCEPTED SUBFAMILY 9911:BFZ4P nidx=null]
Bairdia (Fabalicypris)
 - Bairdia (Fabalicypris) [ACCEPTED SUBGENUS 9910:4J5N nidx=null]
 + Bairdia (Fabalicypris) Cooper, 1946 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6N2 nidx=null]
 + Bairdia (Fabalicypris) Cooper, 1946 [SYNONYM SUBGENUS 9911:BF6N3 nidx=null parent=84Q3D]
Bairdia (Orthobairdia)
 - Bairdia (Orthobairdia) [ACCEPTED SUBGENUS 9910:63GSP nidx=null]
 + Bairdia (Orthobairdia) Sohn, 1960 [SYNONYM SUBGENUS 9911:BFFLB nidx=null parent=84RZL]
 + Bairdia (Orthobairdia) Sohn, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFLC nidx=null]
Bairdia (Rectobairdia)
 - Bairdia (Rectobairdia) [ACCEPTED SUBGENUS 9910:85HVK nidx=null]
 + Bairdia (Rectobairdia) Sohn, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH9M nidx=null]
 + Bairdia (Rectobairdia) Sohn, 1960 [SYNONYM SUBGENUS 9911:BFH9N nidx=null parent=85HVL]
Baseodiscus ophiocephalus
 - Baseodiscus ophiocephalus ? [SYNONYM SPECIES 9910:B9LWF nidx=null parent=39JVV]
 + Baseodiscus ophiocephalus ? [SYNONYM SPECIES 9911:BFMVX nidx=null parent=39JVV]
Bathyamaryllis rostrata
 - Bathyamaryllis rostrata Pirlot, 1933 [SYNONYM SPECIES 9910:KWGN nidx=null parent=6CPM8]
 + Bathyamaryllis rostrata (Chevreux, 1911) [SYNONYM SPECIES 9911:BFMXW nidx=null parent=6CPM8]
Bathysiphon subgen. Silicobathysiphon
 - Bathysiphon subgen. Silicobathysiphon [ACCEPTED SUBGENUS 9910:7ZX22 nidx=null]
 + Bathysiphon subgen. Silicobathysiphon Myatlyuk, 1966 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK3V nidx=null]
 + Bathysiphon subgen. Silicobathysiphon Myatlyuk, 1966 [SYNONYM SUBGENUS 9911:BFK3W nidx=null parent=7NQKP]
Batillaria (Batillariella)
 - Batillaria (Batillariella) [ACCEPTED SUBGENUS 9910:B8BWS nidx=null]
 + Batillaria (Batillariella) Thiele, 1929 [SYNONYM SUBGENUS 9911:BG4GB nidx=null parent=7PLBQ]
 + Batillaria (Batillariella) Thiele, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BG4GC nidx=null]
Bergamosoma
 - Bergamosoma Hoffman, 1980 [PROVISIONALLY_ACCEPTED GENUS 9910:99DRZ nidx=null]
 + Bergamosoma Verhoeff, 1931 [SYNONYM GENUS 9911:BDYSH nidx=null parent=7NT3N]
Bigenerina digitata
 - Bigenerina digitata (d'Orbigny in Cuvier, 1838) [PROVISIONALLY_ACCEPTED SPECIES 9910:LTCD nidx=null]
 + Bigenerina digitata d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:68JF9 nidx=null]
 + Bigenerina digitata Brady, 1864 () [SYNONYM SPECIES 9911:BFNB9 nidx=null parent=3GRDB]
Bigenerina subgen. Bigenerina
 - Bigenerina subgen. Bigenerina [ACCEPTED SUBGENUS 9910:62FV7 nidx=null]
 + Bigenerina subgen. Bigenerina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BF3G2 nidx=null parent=7NQQW]
 + Bigenerina subgen. Bigenerina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3G3 nidx=null]
Bilobiana (Bilobiana)
 - Bilobiana (Bilobiana) Fibiger, 2007 [ACCEPTED SUBGENUS 9910:B8CJG nidx=null]
 + Bilobiana (Bilobiana) Fibiger, 2007 [ACCEPTED SUBGENUS 9911:BGX5M nidx=null]
Bisphaera subgen. Bullella
 - Bisphaera subgen. Bullella [ACCEPTED SUBGENUS 9910:B944Z nidx=null]
 + Bisphaera subgen. Bullella Malakhova & Pronina in Pronina & Chuvashov, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJC2 nidx=null]
 + Bisphaera subgen. Bullella Malakhova & Pronina in Pronina & Chuvashov, 1965 [SYNONYM SUBGENUS 9911:BFJC3 nidx=null parent=7ZTSX]
Bohadschia
 - Bohadschia Jaeger, 1833 [PROVISIONALLY_ACCEPTED GENUS 9910:87DNZ nidx=null]
 + Bohadschia Hrabe, 1971 [SYNONYM GENUS 9911:BDYTB nidx=null parent=84PPM]
Bohaispira
 - Bohaispira [ACCEPTED GENUS 9910:9H7TV nidx=null]
 + Bohaispira Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7NZKC nidx=null]
Bohaispiropsis
 - Bohaispiropsis [ACCEPTED GENUS 9910:9H7TW nidx=null]
 + Bohaispiropsis Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7NZKD nidx=null]
Bolivina subgen. Bolivina
 - Bolivina subgen. Bolivina [ACCEPTED SUBGENUS 9910:3B9K nidx=null]
 + Bolivina subgen. Bolivina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF26C nidx=null parent=7NQVK]
 + Bolivina subgen. Bolivina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF26D nidx=null]
Bolivina subgen. Brizalina
 - Bolivina subgen. Brizalina [ACCEPTED SUBGENUS 9910:3D9Y nidx=null]
 + Bolivina subgen. Brizalina Finger, 1981 [SYNONYM SUBGENUS 9911:BFJBK nidx=null parent=7NQVK]
 + Bolivina subgen. Brizalina Finger, 1981 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJBL nidx=null]
Bolivina subgen. Loxostoma
 - Bolivina subgen. Loxostoma [ACCEPTED SUBGENUS 9910:5H27 nidx=null]
 + Bolivina subgen. Loxostoma Hofker, 1951 [SYNONYM SUBGENUS 9911:BFJRN nidx=null parent=7PN3X]
 + Bolivina subgen. Loxostoma Hofker, 1951 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJRP nidx=null]
Bolivina subgen. Loxostomoides
 - Bolivina subgen. Loxostomoides [ACCEPTED SUBGENUS 9910:7ZVPT nidx=null]
 + Bolivina subgen. Loxostomoides Reyment, 1959 [SYNONYM SUBGENUS 9911:BFB63 nidx=null parent=7ZVPV]
 + Bolivina subgen. Loxostomoides Reyment, 1959 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFB64 nidx=null]
Bolivina subgen. Loxostomum
 - Bolivina subgen. Loxostomum [ACCEPTED SUBGENUS 9910:5H29 nidx=null]
 + Bolivina subgen. Loxostomum Smith, 1963 [SYNONYM SUBGENUS 9911:BFB65 nidx=null parent=7PN3X]
 + Bolivina subgen. Loxostomum Smith, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFB66 nidx=null]
Brachycythere (Digmocythere)
 - Brachycythere (Digmocythere) [ACCEPTED SUBGENUS 9910:85C9T nidx=null]
 + Brachycythere (Digmocythere) Mandelstam, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5MP nidx=null]
 + Brachycythere (Digmocythere) Mandelstam, 1958 [SYNONYM SUBGENUS 9911:BF5MQ nidx=null parent=85C9V]
Brada rugosa
 - Brada rugosa (Hansen, 1882) [ACCEPTED SPECIES 9910:N4K8 nidx=null]
 + Brada rugosa (Hansen, 1880) [SYNONYM SPECIES 9911:BFNJF nidx=null parent=BHGFB]
Bradleya (Quasibradleya)
 - Bradleya (Quasibradleya) [ACCEPTED SUBGENUS 9910:642H3 nidx=null]
 + Bradleya (Quasibradleya) Benson, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH8G nidx=null]
 + Bradleya (Quasibradleya) Benson, 1972 [SYNONYM SUBGENUS 9911:BFH8H nidx=null parent=84T46]
Bradya
 - Bradya Boeck, 1872 [PROVISIONALLY_ACCEPTED GENUS 9910:87DQN nidx=null]
 + Bradya Stache, 1889 [SYNONYM GENUS 9911:BF3PX nidx=null parent=7ZVKK]
Bradya (Bradya)
 - Bradya (Bradya) [ACCEPTED SUBGENUS 9910:3CPQ nidx=null]
 + Bradya (Bradya) Boeck, 1873 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3PY nidx=null]
 + Bradya (Bradya) Boeck, 1873 [SYNONYM SUBGENUS 9911:BF3PZ nidx=null parent=7NR5L]
Bradya (Parabradya)
 - Bradya (Parabradya) [ACCEPTED SUBGENUS 9910:6DQV nidx=null]
 + Bradya (Parabradya) Lang, 1944 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFZJ nidx=null]
 + Bradya (Parabradya) Lang, 1944 [SYNONYM SUBGENUS 9911:BFFZK nidx=null parent=7PRN4]
Brangema
 - Brangema [ACCEPTED GENUS 9910:3CTZ nidx=null]
 + Brangema Nicolleau & Vadet, 1995 [PROVISIONALLY_ACCEPTED GENUS 9911:BF3Q8 nidx=null]
Brissoides (Eupatagus)
 - Brissoides (Eupatagus) [ACCEPTED SUBGENUS 9910:4G7H nidx=null]
 + Brissoides (Eupatagus) L. Agassiz in Agassiz & Desor, 1847 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF46R nidx=null]
 + Brissoides (Eupatagus) L. Agassiz in Agassiz & Desor, 1847 [SYNONYM SUBGENUS 9911:BF46S nidx=null parent=7PF94]
Brissus (Allobrissus)
 - Brissus (Allobrissus) [ACCEPTED SUBGENUS 9910:B9447 nidx=null]
 + Brissus (Allobrissus) Mortensen, 1950 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ8F nidx=null]
 + Brissus (Allobrissus) Mortensen, 1950 [SYNONYM SUBGENUS 9911:BFJ8G nidx=null parent=7NR7V]
Buccinulum (Samudra)
 - Buccinulum (Samudra) [ACCEPTED SUBGENUS 9910:BC658 nidx=null]
 + Buccinulum (Samudra) Beets, 1987 [SYNONYM SUBGENUS 9911:BH983 nidx=null parent=7NV92]
 + Buccinulum (Samudra) Beets, 1987 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BH984 nidx=null]
Bulimina elegans
 - Bulimina elegans d'Orbigny in Parker, Jones & Brady, 1865 [PROVISIONALLY_ACCEPTED SPECIES 9910:9JVGT nidx=null]
 + Bulimina elegans d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:8HWVD nidx=null]
Bulimina subgen. Bolivina
 - Bulimina subgen. Bolivina [ACCEPTED SUBGENUS 9910:3B9J nidx=null]
 + Bulimina subgen. Bolivina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF26B nidx=null]
 + Bulimina subgen. Bolivina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF26F nidx=null parent=7NQVK]
Bulimina subgen. Desinobulimina
 - Bulimina subgen. Desinobulimina [ACCEPTED SUBGENUS 9910:B9466 nidx=null]
 + Bulimina subgen. Desinobulimina Cushman & Parker, 1940 [SYNONYM SUBGENUS 9911:BFJH7 nidx=null parent=7P3RM]
 + Bulimina subgen. Desinobulimina Cushman & Parker, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJH8 nidx=null]
Bulimina subgen. Praebulimina
 - Bulimina subgen. Praebulimina [ACCEPTED SUBGENUS 9910:858W9 nidx=null]
 + Bulimina subgen. Praebulimina de Klasz, Magné & Rérat, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGXG nidx=null]
 + Bulimina subgen. Praebulimina de Klasz, Magné & Rérat, 1963 [SYNONYM SUBGENUS 9911:BFGXH nidx=null parent=7ZWG5]
Bulimus cespitum
 - Bulimus cespitum Mortillet, 1854 [SYNONYM SPECIES 9910:B7S5B nidx=null parent=3VQLV]
 + Bulimus cespitum Mortillet, 1853 [SYNONYM SPECIES 9911:BHS83 nidx=null parent=BGWBL]
Bunonema (Serronema)
 - Bunonema (Serronema) [ACCEPTED SUBGENUS 9910:99FN3 nidx=null]
 + Bunonema (Serronema) Paesler, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG6Y nidx=null]
 + Bunonema (Serronema) Paesler, 1957 [SYNONYM SUBGENUS 9911:BFG6Z nidx=null parent=87KL6]
Buntonia (Rectobuntonia)
 - Buntonia (Rectobuntonia) [ACCEPTED SUBGENUS 9910:642L6 nidx=null]
 + Buntonia (Rectobuntonia) Sissingh, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH9P nidx=null]
 + Buntonia (Rectobuntonia) Sissingh, 1972 [SYNONYM SUBGENUS 9911:BFH9Q nidx=null parent=84T5Z]
Cadulus (Platyschides)
 - Cadulus (Platyschides) [ACCEPTED SUBGENUS 9910:9JQ7G nidx=null]
 + Cadulus (Platyschides) J. B. Henderson, 1920 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGJN8 nidx=null]
 + Cadulus (Platyschides) J. B. Henderson, 1920 [SYNONYM SUBGENUS 9911:BGJN9 nidx=null parent=7PD3Z]
Calcarina
 - Calcarina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:87DS6 nidx=null]
 + Calcarina Moquin-Tandon, 1848 [SYNONYM GENUS 9911:BF2DN nidx=null parent=7PH7G]
Camerina subgen. Bruguieria
 - Camerina subgen. Bruguieria [ACCEPTED SUBGENUS 9910:7ZQ9N nidx=null]
 + Camerina subgen. Bruguieria Prever, 1902 [SYNONYM SUBGENUS 9911:BFJBP nidx=null parent=7PQKD]
 + Camerina subgen. Bruguieria Prever, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJBQ nidx=null]
Camerina subgen. Laharpeia
 - Camerina subgen. Laharpeia [ACCEPTED SUBGENUS 9910:7ZVMC nidx=null]
 + Camerina subgen. Laharpeia Prever, 1902 [SYNONYM SUBGENUS 9911:BFJQ2 nidx=null parent=7PQKD]
 + Camerina subgen. Laharpeia Prever, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJQ3 nidx=null]
Campages joubini
 - Campages joubini Hedley, 1911 [SYNONYM SPECIES 9910:8G4VB nidx=null parent=3XGN2]
 + Campages joubini (Blochmann, 1906) [SYNONYM SPECIES 9911:BDVYM nidx=null parent=3XGN2]
Campecopea ischiana
 - Campecopea ischiana (Verhoeff, 1943) [ACCEPTED SPECIES 9910:QCFC nidx=null]
 + Campecopea ischiana (Verhoeff, 1942) [ACCEPTED SPECIES 9911:BFP2D nidx=null]
Camptonectes aalensis
 - Camptonectes aalensis Paris & Richardson, 1916 [SYNONYM SPECIES 9910:B6FZN nidx=null parent=9THLT]
 + Camptonectes aalensis Paris & Richardson, 1915 [SYNONYM SPECIES 9911:BHS4G nidx=null parent=9THLT]
Camptonectes psilonoti
 - Camptonectes psilonoti Staeche, 1926 [SYNONYM SPECIES 9910:B6H43 nidx=null parent=9THLT]
 + Camptonectes psilonoti Staesche, 1926 [SYNONYM SPECIES 9911:BHS5J nidx=null parent=9THLT]
Cancellina subgen. Shengella
 - Cancellina subgen. Shengella [ACCEPTED SUBGENUS 9910:7ZWZH nidx=null]
 + Cancellina subgen. Shengella Yang, 1985 in Leven, 1997 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHJD nidx=null]
 + Cancellina subgen. Shengella Yang, 1985 in Leven, 1997 [SYNONYM SUBGENUS 9911:BFHJF nidx=null parent=7ZWZJ]
Cassidulina
 - Cassidulina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:B7WXM nidx=null]
 - Cassidulina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:B8WNC nidx=null]
 - Cassidulina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:B8WND nidx=null]
 + Cassidulina Thiele, 1931 [SYNONYM GENUS 9911:BDYQ8 nidx=null parent=7NWDK]
Cassidulus (Galerolampas)
 - Cassidulus (Galerolampas) [ACCEPTED SUBGENUS 9910:4LVJ nidx=null]
 + Cassidulus (Galerolampas) Cotteau, 1889 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJLG nidx=null]
 + Cassidulus (Galerolampas) Cotteau, 1889 [SYNONYM SUBGENUS 9911:BFJLH nidx=null parent=7PXRB]
Cassidulus (Paralampas)
 - Cassidulus (Paralampas) [ACCEPTED SUBGENUS 9910:6F59 nidx=null]
 + Cassidulus (Paralampas) Duncan & Sladen, 1882 [SYNONYM SUBGENUS 9911:BFG6F nidx=null parent=7PRXJ]
 + Cassidulus (Paralampas) Duncan & Sladen, 1882 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG6G nidx=null]
Cassidulus (Pygorhynchus)
 - Cassidulus (Pygorhynchus) [ACCEPTED SUBGENUS 9910:75VD nidx=null]
 + Cassidulus (Pygorhynchus) L. Agassiz, 1839 [SYNONYM SUBGENUS 9911:BFH7R nidx=null parent=7PX5C]
 + Cassidulus (Pygorhynchus) L. Agassiz, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH7S nidx=null]
Catopygus (Oolopygus)
 - Catopygus (Oolopygus) [ACCEPTED SUBGENUS 9910:68JW nidx=null]
 + Catopygus (Oolopygus) d'Orbigny, 1857 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVS4 nidx=null]
 + Catopygus (Oolopygus) d'Orbigny, 1857 [SYNONYM SUBGENUS 9911:BDVS5 nidx=null parent=7PQV7]
Catriona kishiwadensis
 - Catriona kishiwadensis Martynov, Korshunova, Lundin & Malmberg, 2023 [ACCEPTED SPECIES 9910:B6FYQ nidx=null]
 + Catriona kishiwadensis Martynov, Korshunova, Lundin & Malmberg, 2022 [ACCEPTED SPECIES 9911:BHS4D nidx=null]
Catriona lucerna
 - Catriona lucerna Korshunova, Martynov, Lundin & Malmberg, 2023 [ACCEPTED SPECIES 9910:B6GR2 nidx=null]
 + Catriona lucerna Korshunova, Martynov, Lundin & Malmberg, 2022 [ACCEPTED SPECIES 9911:BHS56 nidx=null]
Catriona osezakiensis
 - Catriona osezakiensis Martynov, Korshunova, Lundin & Malmberg, 2023 [ACCEPTED SPECIES 9910:B6GH5 nidx=null]
 + Catriona osezakiensis Martynov, Korshunova, Lundin & Malmberg, 2022 [ACCEPTED SPECIES 9911:BHS4X nidx=null]
Ceratobulimina subgen. Ceratobulimina
 - Ceratobulimina subgen. Ceratobulimina [ACCEPTED SUBGENUS 9910:3KQT nidx=null]
 + Ceratobulimina subgen. Ceratobulimina Toula, 1915 [SYNONYM SUBGENUS 9911:BF4BK nidx=null parent=7NX3R]
 + Ceratobulimina subgen. Ceratobulimina Toula, 1915 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4BL nidx=null]
Ceratobulimina subgen. Ceratocancris
 - Ceratobulimina subgen. Ceratocancris [ACCEPTED SUBGENUS 9910:3KQW nidx=null]
 + Ceratobulimina subgen. Ceratocancris Finlay, 1939 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4BM nidx=null]
 + Ceratobulimina subgen. Ceratocancris Finlay, 1939 [SYNONYM SUBGENUS 9911:BF4BN nidx=null parent=7NX3Z]
Ceratobulimina subgen. Ceratolamarckina
 - Ceratobulimina subgen. Ceratolamarckina [ACCEPTED SUBGENUS 9910:7ZTMJ nidx=null]
 + Ceratobulimina subgen. Ceratolamarckina Troelsen, 1954 [SYNONYM SUBGENUS 9911:BF4BP nidx=null parent=7ZTMK]
 + Ceratobulimina subgen. Ceratolamarckina Troelsen, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4BQ nidx=null]
Ceratonereis (Composetia)
 - Ceratonereis (Composetia) [ACCEPTED SUBGENUS 9910:62N7W nidx=null]
 + Ceratonereis (Composetia) Hartmann-Schröder, 1985 [SYNONYM SUBGENUS 9911:BF2YV nidx=null parent=84NTT]
 + Ceratonereis (Composetia) Hartmann-Schröder, 1985 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2YW nidx=null]
Ceratotrochus (Ceratotrochus)
 - Ceratotrochus (Ceratotrochus) [ACCEPTED SUBGENUS 9910:3KXH nidx=null]
 + Ceratotrochus (Ceratotrochus) Milne Edwards & Haime, 1848 [SYNONYM SUBGENUS 9911:BF2NF nidx=null parent=84M7R]
 + Ceratotrochus (Ceratotrochus) Milne Edwards & Haime, 1848 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2NH nidx=null]
Ceratotrochus (Conotrochus)
 - Ceratotrochus (Conotrochus) [ACCEPTED SUBGENUS 9910:3TGG nidx=null]
 + Ceratotrochus (Conotrochus) Seguenza, 1864 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4V2 nidx=null]
 + Ceratotrochus (Conotrochus) Seguenza, 1864 [SYNONYM SUBGENUS 9911:BF4V3 nidx=null parent=84MHW]
Cerosipha (Cerosipha)
 - Cerosipha (Cerosipha) [SYNONYM SUBGENUS 9910:B7Y26 nidx=null parent=9CHY2]
 + Cerosipha (Cerosipha) [SYNONYM SUBGENUS 9911:BF4CJ nidx=null parent=8NVDZ]
Cetorhinicola
 - Cetorhinicola [ACCEPTED GENUS 9910:3LCY nidx=null]
 + Cetorhinicola Beveridge & Campbell, 1988 [PROVISIONALLY_ACCEPTED GENUS 9911:7NSDQ nidx=null]
Chaetophiloscia sicula sicula
 - Chaetophiloscia sicula sicula Verhoeff, 1909 [ACCEPTED SUBSPECIES 9910:5DTWP nidx=null]
 + Chaetophiloscia sicula sicula Verhoeff, 1908 [ACCEPTED SUBSPECIES 9911:BFTP2 nidx=null]
Cheiraster (Cheiraster)
 - Cheiraster (Cheiraster) [ACCEPTED SUBGENUS 9910:3MJN nidx=null]
 + Cheiraster (Cheiraster) Studer, 1883 [SYNONYM SUBGENUS 9911:BDXRS nidx=null parent=7NSK5]
 + Cheiraster (Cheiraster) Studer, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXRT nidx=null]
Chernyshinella subgen. Chernyshinella
 - Chernyshinella subgen. Chernyshinella [ACCEPTED SUBGENUS 9910:7ZTN3 nidx=null]
 + Chernyshinella subgen. Chernyshinella Lipina, 1955 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4FM nidx=null]
 + Chernyshinella subgen. Chernyshinella Lipina, 1955 [SYNONYM SUBGENUS 9911:BF4FN nidx=null parent=7ZTN4]
Chernyshinella subgen. Rectochernyshinella
 - Chernyshinella subgen. Rectochernyshinella [ACCEPTED SUBGENUS 9910:7ZWRT nidx=null]
 + Chernyshinella subgen. Rectochernyshinella Lipina, 1965 [SYNONYM SUBGENUS 9911:BFH9S nidx=null parent=7ZVC4]
 + Chernyshinella subgen. Rectochernyshinella Lipina, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH9T nidx=null]
Chilota lossbergi
 - Chilota lossbergi Michaelsen, 1900 [ACCEPTED SPECIES 9910:8SX73 nidx=null]
 + Chilota lossbergi Michaelsen, 1899 [ACCEPTED SPECIES 9911:BFPQP nidx=null]
Chlamys
 - Chlamys Röding, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B6LX2 nidx=null]
 + Chlamys Beneden, 1892 [SYNONYM GENUS 9911:BDVK2 nidx=null parent=7PQW7]
Chlamys (Lyropecten) nodosiformis
 - Chlamys (Lyropecten) nodosiformis (Serres, 1837) [SYNONYM SPECIES 9910:B6JM2 nidx=null parent=B6FP2]
 + Chlamys (Lyropecten) nodosiformis (Pusch, 1837) [SYNONYM SPECIES 9911:BHS78 nidx=null parent=BHS3Z]
Chlamys articulata var. notgroviensis
 - Chlamys articulata var. notgroviensis Paris & Richardson, 1916 [SYNONYM VARIETY 9910:B6G4S nidx=null parent=B6G3W]
 + Chlamys articulata var. notgroviensis Paris & Richardson, 1915 [SYNONYM VARIETY 9911:BHS4L nidx=null parent=5Y94J]
Chlamys articulata var. sauzeana
 - Chlamys articulata var. sauzeana Paris & Richardson, 1916 [SYNONYM VARIETY 9910:B6DGN nidx=null parent=B6G3W]
 + Chlamys articulata var. sauzeana Paris & Richardson, 1915 [SYNONYM VARIETY 9911:BHS2B nidx=null parent=5Y94J]
Chlamys reissi
 - Chlamys reissi (Broon, 1862) [ACCEPTED SPECIES 9910:B6GJ5 nidx=null]
 + Chlamys reissi (Bronn, 1862) [ACCEPTED SPECIES 9911:BHS4Y nidx=null]
Chonostomum
 - Chonostomum [ACCEPTED GENUS 9910:3P2W nidx=null]
 + Chonostomum Schmarda, 1859 [PROVISIONALLY_ACCEPTED GENUS 9911:BF2RT nidx=null]
Chordeuma
 - Chordeuma C. L. Koch, 1847 [PROVISIONALLY_ACCEPTED GENUS 9910:B3GZ6 nidx=null]
 + Chordeuma Jungersen, 1914 [SYNONYM GENUS 9911:BDYSJ nidx=null parent=7NZDJ]
Chrysalidina subgen. Pfendericonus
 - Chrysalidina subgen. Pfendericonus [ACCEPTED SUBGENUS 9910:7ZWBQ nidx=null]
 + Chrysalidina subgen. Pfendericonus Hottinger & Drobne, 1980 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGPK nidx=null]
 + Chrysalidina subgen. Pfendericonus Hottinger & Drobne, 1980 [SYNONYM SUBGENUS 9911:BFGPL nidx=null parent=7ZWBR]
Chusenella subgen. Chusenella
 - Chusenella subgen. Chusenella [ACCEPTED SUBGENUS 9910:7ZTNR nidx=null]
 + Chusenella subgen. Chusenella Hsu, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4JJ nidx=null]
 + Chusenella subgen. Chusenella Hsu, 1942 [SYNONYM SUBGENUS 9911:BF4JK nidx=null parent=7ZTNS]
Chusenella subgen. Orientoschwagerina
 - Chusenella subgen. Orientoschwagerina [ACCEPTED SUBGENUS 9910:7ZW3T nidx=null]
 + Chusenella subgen. Orientoschwagerina A.D. Miklukho-Maklay, 1955 [SYNONYM SUBGENUS 9911:BFFKD nidx=null parent=7ZW3V]
 + Chusenella subgen. Orientoschwagerina A.D. Miklukho-Maklay, 1955 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFKF nidx=null]
Cibicides subgen. Anomalinoides
 - Cibicides subgen. Anomalinoides [ACCEPTED SUBGENUS 9910:WRD nidx=null]
 + Cibicides subgen. Anomalinoides Vasilenko, 1954 [SYNONYM SUBGENUS 9911:BF2FT nidx=null parent=7NQ3R]
 + Cibicides subgen. Anomalinoides Vasilenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2FV nidx=null]
Cibicides subgen. Cibicides
 - Cibicides subgen. Cibicides [ACCEPTED SUBGENUS 9910:3PRD nidx=null]
 + Cibicides subgen. Cibicides Montfort, 1808 [SYNONYM SUBGENUS 9911:BF2SJ nidx=null parent=7NSW7]
 + Cibicides subgen. Cibicides Montfort, 1808 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2SK nidx=null]
Cibicides subgen. Cibicidoides
 - Cibicides subgen. Cibicidoides [ACCEPTED SUBGENUS 9910:3PRG nidx=null]
 + Cibicides subgen. Cibicidoides Brotzen, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVFT nidx=null]
 + Cibicides subgen. Cibicidoides Brotzen, 1936 [SYNONYM SUBGENUS 9911:BDVFV nidx=null parent=7NZKW]
Cibicides subgen. Gemellides
 - Cibicides subgen. Gemellides [ACCEPTED SUBGENUS 9910:7ZV89 nidx=null]
 + Cibicides subgen. Gemellides Vasilenko, 1954 [SYNONYM SUBGENUS 9911:BF6V7 nidx=null parent=7ZV8B]
 + Cibicides subgen. Gemellides Vasilenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6V8 nidx=null]
Cibicides subgen. Heterolepa
 - Cibicides subgen. Heterolepa [ACCEPTED SUBGENUS 9910:4WH2 nidx=null]
 + Cibicides subgen. Heterolepa Krayeva, 1970 [SYNONYM SUBGENUS 9911:BF7SJ nidx=null parent=7PK4V]
 + Cibicides subgen. Heterolepa Krayeva, 1970 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7SK nidx=null]
Cibicides subgen. Planulina
 - Cibicides subgen. Planulina [ACCEPTED SUBGENUS 9910:6RHW nidx=null]
 + Cibicides subgen. Planulina Vasilenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8B3 nidx=null]
 + Cibicides subgen. Planulina Vasilenko, 1954 [SYNONYM SUBGENUS 9911:BF8B4 nidx=null parent=7PSKM]
Cidaris
 - Cidaris Leske, 1778 [PROVISIONALLY_ACCEPTED GENUS 9910:B7W5R nidx=null]
 - Cidaris Leske, 1778 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VHX nidx=null]
 + Cidaris Röding, 1798 [SYNONYM GENUS 9911:BDVFW nidx=null parent=7PJ4D]
Cidaris (Balanocidaris)
 - Cidaris (Balanocidaris) [ACCEPTED SUBGENUS 9910:37HP nidx=null]
 + Cidaris (Balanocidaris) Lambert, 1910 [SYNONYM SUBGENUS 9911:BDVFB nidx=null parent=7NSF8]
 + Cidaris (Balanocidaris) Lambert, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVFC nidx=null]
Cidaris (Bramus)
 - Cidaris (Bramus) [ACCEPTED SUBGENUS 9910:63X3R nidx=null]
 + Cidaris (Bramus) De Gregorio, 1930 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF29R nidx=null]
Cidaris (Protocidaris)
 - Cidaris (Protocidaris) [ACCEPTED SUBGENUS 9910:63ZN3 nidx=null]
 + Cidaris (Protocidaris) Whidborne, 1898 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGZV nidx=null]
Cidaris (Vernius)
 - Cidaris (Vernius) [ACCEPTED SUBGENUS 9910:8GSR nidx=null]
 + Cidaris (Vernius) De Gregorio, 1930 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ46 nidx=null]
Clarkus sveltus
 - Clarkus sveltus (Altherr, 1968) Jairajpuri & Khan, 1972 [ACCEPTED SPECIES 9910:8G5L7 nidx=null]
 + Clarkus sveltus (Altherr, 1968) Jairajpuri & Khan, 1982 [ACCEPTED SPECIES 9911:BFQ77 nidx=null]
Clausia
 - Clausia Claparède, 1863 [PROVISIONALLY_ACCEPTED GENUS 9910:87FZT nidx=null]
 + Clausia Boeck, 1865 [SYNONYM GENUS 9911:BDVKW nidx=null parent=7PW8R]
Clausilia disjuncta
 - Clausilia disjuncta Mortillet, 1854 [SYNONYM SPECIES 9910:9F8L2 nidx=null parent=GS4J]
 + Clausilia disjuncta Mortillet, 1853 [SYNONYM SPECIES 9911:BGWJ8 nidx=null parent=BFMFL]
Clausilia huet
 - Clausilia huet Mortillet, 1854 [SYNONYM SPECIES 9910:7QPY7 nidx=null parent=GS4N]
 + Clausilia huet Mortillet, 1853 [SYNONYM SPECIES 9911:BFQ7R nidx=null parent=BFMFM]
Clausilia rupicola
 - Clausilia rupicola Mortillet, 1854 [SYNONYM SPECIES 9910:7QQ8C nidx=null parent=3ZSFF]
 + Clausilia rupicola Mortillet, 1853 [SYNONYM SPECIES 9911:BFQ7X nidx=null parent=BFQHQ]
Clavulina subgen. Clavulinoides
 - Clavulina subgen. Clavulinoides [ACCEPTED SUBGENUS 9910:7ZTPP nidx=null]
 + Clavulina subgen. Clavulinoides Selli, 1946 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4MJ nidx=null]
 + Clavulina subgen. Clavulinoides Selli, 1946 [SYNONYM SUBGENUS 9911:BF4MK nidx=null parent=7ZTPQ]
Climacopoma serratomarginata
 - Climacopoma serratomarginata MacNeil, 1960 [SYNONYM SPECIES 9910:8V7RN nidx=null parent=8V82W]
 + Climacopoma serratomarginata MacNeil, 1961 [SYNONYM SPECIES 9911:BFQ8W nidx=null parent=8V82W]
Cluniaster
 - Cluniaster [ACCEPTED GENUS 9910:3R8B nidx=null]
 + Cluniaster Jeannet, 1934 [PROVISIONALLY_ACCEPTED GENUS 9911:BF4PF nidx=null]
Clypeaster (Coronanthus)
 - Clypeaster (Coronanthus) [ACCEPTED SUBGENUS 9910:62MFH nidx=null]
 + Clypeaster (Coronanthus) Lambert, 1913 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJF8 nidx=null]
 + Clypeaster (Coronanthus) Lambert, 1913 [SYNONYM SUBGENUS 9911:BFJF9 nidx=null parent=7NT67]
Clypeaster (Platyclypeina)
 - Clypeaster (Platyclypeina) [ACCEPTED SUBGENUS 9910:B94B4 nidx=null]
 + Clypeaster (Platyclypeina) Lambert & Thiéry, 1914 [SYNONYM SUBGENUS 9911:BFJXN nidx=null parent=7NT67]
 + Clypeaster (Platyclypeina) Lambert & Thiéry, 1914 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJXP nidx=null]
Clypeaster (Rhaphidoclypus)
 - Clypeaster (Rhaphidoclypus) [ACCEPTED SUBGENUS 9910:63QNX nidx=null]
 + Clypeaster (Rhaphidoclypus) A. Agassiz, 1863 [SYNONYM SUBGENUS 9911:BFK2C nidx=null parent=7NT67]
 + Clypeaster (Rhaphidoclypus) A. Agassiz, 1863 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2D nidx=null]
Cobbonchus pounamua
 - Cobbonchus pounamua Clark, 1969 [ACCEPTED SPECIES 9910:87Y45 nidx=null]
 + Cobbonchus pounamua Clark, 1960 [ACCEPTED SPECIES 9911:BFQCB nidx=null]
Codonofusiella subgen. Lantschichites
 - Codonofusiella subgen. Lantschichites [ACCEPTED SUBGENUS 9910:7ZVMM nidx=null]
 + Codonofusiella subgen. Lantschichites Tumanskaya, 1953 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF93S nidx=null]
 + Codonofusiella subgen. Lantschichites Tumanskaya, 1953 [SYNONYM SUBGENUS 9911:BF93T nidx=null parent=7ZVMN]
Conasprella (Ximeniconus)
 - Conasprella (Ximeniconus) [ACCEPTED SUBGENUS 9910:9G3YS nidx=null]
 + Conasprella (Ximeniconus) W. K. Emerson & Old, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGQ4Z nidx=null]
 + Conasprella (Ximeniconus) W. K. Emerson & Old, 1962 [SYNONYM SUBGENUS 9911:BGQ52 nidx=null parent=7P26Q]
Conotrochus
 - Conotrochus Seguenza, 1864 [PROVISIONALLY_ACCEPTED GENUS 9910:87F7H nidx=null]
 + Conotrochus Pilsbry, 1889 [SYNONYM GENUS 9911:BF4TZ nidx=null parent=7PBJL]
Conulus
 - Conulus Leske, 1778 [PROVISIONALLY_ACCEPTED GENUS 9910:87G38 nidx=null]
 + Conulus Fitzinger, 1833 [SYNONYM GENUS 9911:BF4VC nidx=null parent=7NZBH]
 + Conulus Nardo, 1841 [SYNONYM GENUS 9911:BF4VD nidx=null parent=7NRL5]
Conus (Floraconus)
 - Conus (Floraconus) [ACCEPTED SUBGENUS 9910:B797Q nidx=null]
 + Conus (Floraconus) Iredale, 1930 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BG93P nidx=null]
 + Conus (Floraconus) Iredale, 1930 [SYNONYM SUBGENUS 9911:BG93Q nidx=null parent=7NTGM]
Convexastrea
 - Convexastrea [ACCEPTED GENUS 9910:BBPLG nidx=null]
 + Convexastrea d'Orbigny, 1849 [PROVISIONALLY_ACCEPTED GENUS 9911:BG6FJ nidx=null]
Coomansus silvius
 - Coomansus silvius (Eroshenko, 1975) Jairajpuri & Khan, 1977 [SYNONYM SPECIES 9910:8G5WY nidx=null parent=B8RRM]
 + Coomansus silvius (Eroshenko, 1975) Jairajpuri & Khan, 1982 [SYNONYM SPECIES 9911:BFQMK nidx=null parent=B8RRM]
Corbula
 - Corbula Bruguière, 1797 [PROVISIONALLY_ACCEPTED GENUS 9910:87F85 nidx=null]
 + Corbula Röding, 1798 [SYNONYM GENUS 9911:BDVLS nidx=null parent=7NPT6]
Corechinus
 - Corechinus [ACCEPTED GENUS 9910:62MLY nidx=null]
 + Corechinus Kongiel, 1936 [PROVISIONALLY_ACCEPTED GENUS 9911:BF4WZ nidx=null]
Cornuspira subgen. Psammophis
 - Cornuspira subgen. Psammophis [ACCEPTED SUBGENUS 9910:7PW2K nidx=null]
 + Cornuspira subgen. Psammophis Cherdynzev, 1914 [SYNONYM SUBGENUS 9911:BF8XX nidx=null parent=7ZLH7]
 + Cornuspira subgen. Psammophis Cherdynzev, 1914 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8XY nidx=null]
Corycaeus (Ditrichocorycaeus)
 - Corycaeus (Ditrichocorycaeus) [ACCEPTED SUBGENUS 9910:4756 nidx=null]
 + Corycaeus (Ditrichocorycaeus) Dahl M., 1912 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3QD nidx=null]
 + Corycaeus (Ditrichocorycaeus) Dahl M., 1912 [SYNONYM SUBGENUS 9911:BF3QF nidx=null parent=7PBXJ]
Corycaeus (Monocorycaeus)
 - Corycaeus (Monocorycaeus) [ACCEPTED SUBGENUS 9910:63DBV nidx=null]
 + Corycaeus (Monocorycaeus) Dahl M., 1912 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCFY nidx=null]
 + Corycaeus (Monocorycaeus) Dahl M., 1912 [SYNONYM SUBGENUS 9911:BFCFZ nidx=null parent=7PPDP]
Coscinoderma cavernosa
 - Coscinoderma cavernosa [SYNONYM SPECIES 9910:6B6JP nidx=null parent=6B6K2]
 + Coscinoderma cavernosa Sim & Kim, 2014 [SYNONYM SPECIES 9911:BFQPP nidx=null parent=6B6K2]
Coskinolina subgen. Coskinolina
 - Coskinolina subgen. Coskinolina [ACCEPTED SUBGENUS 9910:7ZTRM nidx=null]
 + Coskinolina subgen. Coskinolina Stache, 1875 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4Y4 nidx=null]
 + Coskinolina subgen. Coskinolina Stache, 1875 [SYNONYM SUBGENUS 9911:BF4Y5 nidx=null parent=7ZTRN]
Costa
 - Costa Neviani, 1928 [PROVISIONALLY_ACCEPTED GENUS 9910:9H69G nidx=null]
 + Costa Xu & Ling, 2012 [SYNONYM GENUS 9911:BDWWQ nidx=null parent=7NTLK]
Cottreaucorys (Cordastrum)
 - Cottreaucorys (Cordastrum) [ACCEPTED SUBGENUS 9910:8CPT nidx=null]
 + Cottreaucorys (Cordastrum) Nisiyama, 1968 [SYNONYM SUBGENUS 9911:BF4WP nidx=null parent=7Q7DZ]
 + Cottreaucorys (Cordastrum) Nisiyama, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4WQ nidx=null]
Cribroelphidium subgen. Cribroelphidium
 - Cribroelphidium subgen. Cribroelphidium [ACCEPTED SUBGENUS 9910:3VSV nidx=null]
 + Cribroelphidium subgen. Cribroelphidium Cushman & Brönnimann, 1948 [SYNONYM SUBGENUS 9911:BF35X nidx=null parent=7P5TW]
 + Cribroelphidium subgen. Cribroelphidium Cushman & Brönnimann, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF35Y nidx=null]
Cribroelphidium subgen. Rimelphidium
 - Cribroelphidium subgen. Rimelphidium [ACCEPTED SUBGENUS 9910:B94D9 nidx=null]
 + Cribroelphidium subgen. Rimelphidium Voloshinova, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2N nidx=null]
 + Cribroelphidium subgen. Rimelphidium Voloshinova, 1958 [SYNONYM SUBGENUS 9911:BFK2P nidx=null parent=7P5TW]
Cribrosphaeroides subgen. Cribrosphaeroides
 - Cribrosphaeroides subgen. Cribrosphaeroides [ACCEPTED SUBGENUS 9910:7ZTSW nidx=null]
 + Cribrosphaeroides subgen. Cribrosphaeroides Reitlinger, 1959 in Poyarkov, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF52X nidx=null]
 + Cribrosphaeroides subgen. Cribrosphaeroides Reitlinger, 1959 in Poyarkov, 1969 [SYNONYM SUBGENUS 9911:BF52Y nidx=null parent=7ZTSX]
Crinocidaris
 - Crinocidaris [ACCEPTED GENUS 9910:3VVH nidx=null]
 + Crinocidaris De Gregorio, 1930 [PROVISIONALLY_ACCEPTED GENUS 9911:BF534 nidx=null]
Cristellaria subgen. Astacolus
 - Cristellaria subgen. Astacolus [ACCEPTED SUBGENUS 9910:348L nidx=null]
 + Cristellaria subgen. Astacolus Franke, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2ZS nidx=null]
 + Cristellaria subgen. Astacolus Franke, 1936 [SYNONYM SUBGENUS 9911:BF2ZT nidx=null parent=7NPWR]
Cristellaria subgen. Cristellaire
 - Cristellaria subgen. Cristellaire [ACCEPTED SUBGENUS 9910:B945P nidx=null]
 + Cristellaria subgen. Cristellaire d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BFJFQ nidx=null parent=7PQPX]
 + Cristellaria subgen. Cristellaire d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJFR nidx=null]
Cristellaria subgen. Lenticulina
 - Cristellaria subgen. Lenticulina [ACCEPTED SUBGENUS 9910:5C8R nidx=null]
 + Cristellaria subgen. Lenticulina Franke, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVMJ nidx=null]
 + Cristellaria subgen. Lenticulina Franke, 1936 [SYNONYM SUBGENUS 9911:BDVMK nidx=null parent=7P993]
Cristellaria subgen. Marginulina
 - Cristellaria subgen. Marginulina [ACCEPTED SUBGENUS 9910:5LB8 nidx=null]
 + Cristellaria subgen. Marginulina Stache, 1864 [SYNONYM SUBGENUS 9911:BFBX2 nidx=null parent=7PF65]
 + Cristellaria subgen. Marginulina Stache, 1864 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBX3 nidx=null]
Cristellaria subgen. Planularia
 - Cristellaria subgen. Planularia [ACCEPTED SUBGENUS 9910:6RHV nidx=null]
 + Cristellaria subgen. Planularia Franke, 1936 [SYNONYM SUBGENUS 9911:BF89W nidx=null parent=7PSKK]
 + Cristellaria subgen. Planularia Franke, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF89X nidx=null]
Cristellaria subgen. Robulina
 - Cristellaria subgen. Robulina [ACCEPTED SUBGENUS 9910:63RRD nidx=null]
 + Cristellaria subgen. Robulina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BFK2S nidx=null parent=7P993]
 + Cristellaria subgen. Robulina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2T nidx=null]
Cristellaria subgen. Robulus
 - Cristellaria subgen. Robulus [ACCEPTED SUBGENUS 9910:63S3D nidx=null]
 + Cristellaria subgen. Robulus ten Dam & Reinhold, 1942 [SYNONYM SUBGENUS 9911:BFK2X nidx=null parent=7P993]
 + Cristellaria subgen. Robulus ten Dam & Reinhold, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2Y nidx=null]
Cristellaria subgen. Saracenaria
 - Cristellaria subgen. Saracenaria [ACCEPTED SUBGENUS 9910:7CCT nidx=null]
 + Cristellaria subgen. Saracenaria Pijpers, 1933 [SYNONYM SUBGENUS 9911:BFG4P nidx=null parent=7PYP2]
 + Cristellaria subgen. Saracenaria Pijpers, 1933 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG4Q nidx=null]
Crocidopoma (Cyclocubana) perdistinctum
 - Crocidopoma (Cyclocubana) perdistinctum (L. Pfeiffer & Gundlach, 1858) [SYNONYM SPECIES 9910:7QVXC nidx=null parent=7QWSF]
 + Crocidopoma (Cyclocubana) perdistinctum (L. Pfeiffer, 1858) [SYNONYM SPECIES 9911:BFQX7 nidx=null parent=BFR52]
Crocidopoma perdistinctum
 - Crocidopoma perdistinctum (L. Pfeiffer & Gundlach, 1858) [SYNONYM SPECIES 9910:7QVYC nidx=null parent=7QWSF]
 + Crocidopoma perdistinctum (L. Pfeiffer, 1858) [SYNONYM SPECIES 9911:BFQX6 nidx=null parent=BFR52]
Crucibrissus
 - Crucibrissus [ACCEPTED GENUS 9910:62P2H nidx=null]
 + Crucibrissus Lambert, 1920 [PROVISIONALLY_ACCEPTED GENUS 9911:BF53T nidx=null]
Cryptoceros
 - Cryptoceros [ACCEPTED GENUS 9910:9XDBF nidx=null]
 + Cryptoceros Faubel, 1984 [PROVISIONALLY_ACCEPTED GENUS 9911:BG6RW nidx=null]
Cryptodon inequalis
 - Cryptodon inequalis Verrill & K. J. Bush, 1898 [SYNONYM SPECIES 9910:7QW9P nidx=null parent=7BY35]
 + Cryptodon inequalis A. E. Verrill & K. J. Bush, 1898 [SYNONYM SPECIES 9911:6BLQY nidx=null parent=7BY35]
Cultellus tenerior
 - Cultellus tenerior (Hedley, 1914) [SYNONYM SPECIES 9910:32DQZ nidx=null parent=6YQHK]
 + Cultellus tenerior (Hedley, 1915) [SYNONYM SPECIES 9911:BFM26 nidx=null parent=BHDM8]
Curtisia
 - Curtisia [ACCEPTED GENUS 9910:3XHR nidx=null]
 + Curtisia Graff, 1916 [PROVISIONALLY_ACCEPTED GENUS 9911:BF39K nidx=null]
Cycloclypeus subgen. Cycloclypeus
 - Cycloclypeus subgen. Cycloclypeus [ACCEPTED SUBGENUS 9910:3XVX nidx=null]
 + Cycloclypeus subgen. Cycloclypeus W.B. Carpenter, 1856 [SYNONYM SUBGENUS 9911:BF57M nidx=null parent=7P7CC]
 + Cycloclypeus subgen. Cycloclypeus W.B. Carpenter, 1856 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF57N nidx=null]
Cycloclypeus subgen. Katacycloclypeus
 - Cycloclypeus subgen. Katacycloclypeus [ACCEPTED SUBGENUS 9910:B9482 nidx=null]
 + Cycloclypeus subgen. Katacycloclypeus Tan, 1932 [SYNONYM SUBGENUS 9911:BFJP7 nidx=null parent=7P7CC]
 + Cycloclypeus subgen. Katacycloclypeus Tan, 1932 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJP8 nidx=null]
Cyclocoelum (Pseudhyptiasmus)
 - Cyclocoelum (Pseudhyptiasmus) [ACCEPTED SUBGENUS 9910:B94BF nidx=null]
 + Cyclocoelum (Pseudhyptiasmus) Dollfus, 1948 [SYNONYM SUBGENUS 9911:BFJYW nidx=null parent=7PKSC]
 + Cyclocoelum (Pseudhyptiasmus) Dollfus, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJYX nidx=null]
Cyclops (Diacyclops)
 - Cyclops (Diacyclops) [ACCEPTED SUBGENUS 9910:442N nidx=null]
 + Cyclops (Diacyclops) Kiefer, 1927 [SYNONYM SUBGENUS 9911:BDVRY nidx=null parent=7NW5G]
 + Cyclops (Diacyclops) Kiefer, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVRZ nidx=null]
Cyclops (Megacyclops)
 - Cyclops (Megacyclops) [ACCEPTED SUBGENUS 9910:9WMHK nidx=null]
 + Cyclops (Megacyclops) Kiefer, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFVN nidx=null]
 + Cyclops (Megacyclops) Kiefer, 1927 [SYNONYM SUBGENUS 9911:BDWHC nidx=null parent=7PFSB]
Cyclops (Microcyclops)
 - Cyclops (Microcyclops) [ACCEPTED SUBGENUS 9910:9WMJX nidx=null]
 + Cyclops (Microcyclops) Claus, 1893 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFVP nidx=null]
 + Cyclops (Microcyclops) Claus, 1893 [SYNONYM SUBGENUS 9911:BF6Q3 nidx=null parent=7PHZR]
Cyclostoma (Leptopoma) bicolor
 - Cyclostoma (Leptopoma) bicolor L. Pfeiffer, 1854 [SYNONYM SPECIES 9910:7QXP8 nidx=null parent=7RVVR]
 + Cyclostoma (Leptopoma) bicolor (L. Pfeiffer, 1852) [SYNONYM SPECIES 9911:BFR73 nidx=null parent=BGSZ6]
Cyclostoma ignescens
 - Cyclostoma ignescens L. Pfeiffer, 1851 [SYNONYM SPECIES 9910:7QXWH nidx=null parent=7RVWX]
 + Cyclostoma ignescens (L. Pfeiffer, 1852) [SYNONYM SPECIES 9911:BFR7F nidx=null parent=BGSZC]
Cyclostoma orbignyi
 - Cyclostoma orbignyi L. Pfeiffer, 1852 [SYNONYM SPECIES 9910:7QXZC nidx=null parent=7RBMT]
 + Cyclostoma orbignyi L. Pfeiffer, 1853 [SYNONYM SPECIES 9911:BFR7J nidx=null parent=7RBMT]
Cyclostoma stramineum
 - Cyclostoma stramineum Reeve, 1843 [SYNONYM SPECIES 9910:7QY3W nidx=null parent=7SB82]
 + Cyclostoma stramineum G. B. Sowerby I, 1843 [SYNONYM SPECIES 9911:BFR7P nidx=null parent=BH5LT]
Cyclotus perdistinctus
 - Cyclotus perdistinctus L. Pfeiffer & Gundlach, 1858 [SYNONYM SPECIES 9910:7QYQ2 nidx=null parent=7QWSF]
 + Cyclotus perdistinctus L. Pfeiffer, 1858 [SYNONYM SPECIES 9911:BFR85 nidx=null parent=BFR52]
Cyclotus stramineus
 - Cyclotus stramineus (Reeve, 1843) [SYNONYM SPECIES 9910:8M3YW nidx=null parent=7SB82]
 + Cyclotus stramineus (G. B. Sowerby I, 1843) [SYNONYM SPECIES 9911:BFR86 nidx=null parent=BH5LT]
Cylisticus laevis
 - Cylisticus laevis Schnitzler, 1852 [SYNONYM SPECIES 9910:334MH nidx=null parent=334LY]
 + Cylisticus laevis Schnitzler, 1853 [SYNONYM SPECIES 9911:BFR8T nidx=null parent=334LY]
Cymbalopora subgen. Tretomphalus
 - Cymbalopora subgen. Tretomphalus [ACCEPTED SUBGENUS 9910:7YTG nidx=null]
 + Cymbalopora subgen. Tretomphalus Chapman, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBN3 nidx=null]
 + Cymbalopora subgen. Tretomphalus Chapman, 1902 [SYNONYM SUBGENUS 9911:BFBN4 nidx=null parent=7Q4YC]
Cyphosoma (Coptosoma)
 - Cyphosoma (Coptosoma) [ACCEPTED SUBGENUS 9910:8CPP nidx=null]
 + Cyphosoma (Coptosoma) Desor, 1855 [SYNONYM SUBGENUS 9911:BDTXL nidx=null parent=7PVGF]
 + Cyphosoma (Coptosoma) Desor, 1855 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDTXM nidx=null]
Cypraea (Aricia)
 - Cypraea (Aricia) [ACCEPTED SUBGENUS 9910:B7W5H nidx=null]
 + Cypraea (Aricia) Gray, 1837 [SYNONYM SUBGENUS 9911:BDVF4 nidx=null parent=7P96J]
 + Cypraea (Aricia) Gray, 1837 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVF5 nidx=null]
Cypridea (Sebastianites)
 - Cypridea (Sebastianites) [ACCEPTED SUBGENUS 9910:B6TBX nidx=null]
 + Cypridea (Sebastianites) Kroemmelbein, 1962 [SYNONYM SUBGENUS 9911:BFJGL nidx=null parent=B6TBY]
 + Cypridea (Sebastianites) Kroemmelbein, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJGM nidx=null]
Cythere (Cythereis)
 - Cythere (Cythereis) [ACCEPTED SUBGENUS 9910:3Z5M nidx=null]
 + Cythere (Cythereis) Jones, 1849 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3G9 nidx=null]
 + Cythere (Cythereis) Jones, 1849 [SYNONYM SUBGENUS 9911:BF3GB nidx=null parent=84MQ5]
Cythere (Cytheridea)
 - Cythere (Cytheridea) [ACCEPTED SUBGENUS 9910:3Z5R nidx=null]
 + Cythere (Cytheridea) Bosquet, 1852 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5BG nidx=null]
 + Cythere (Cytheridea) Bosquet, 1852 [SYNONYM SUBGENUS 9911:BF5BH nidx=null parent=84MQ8]
Cythere (Cytherideis)
 - Cythere (Cytherideis) [ACCEPTED SUBGENUS 9910:3Z5S nidx=null]
 + Cythere (Cytherideis) Jones, 1856 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5BJ nidx=null]
 + Cythere (Cytherideis) Jones, 1856 [SYNONYM SUBGENUS 9911:BF5BK nidx=null parent=84PFB]
Cythere costataxi
 - Cythere costataxi ? [SYNONYM SPECIES 9910:B9ZX4 nidx=null parent=KDBP]
 + Cythere costataxi ? [SYNONYM SPECIES 9911:BFRC8 nidx=null parent=KDBP]
Cythereis (Procythereis)
 - Cythereis (Procythereis) [ACCEPTED SUBGENUS 9910:6WDD nidx=null]
 + Cythereis (Procythereis) Skogsberg, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFSM nidx=null]
 + Cythereis (Procythereis) Skogsberg, 1928 [SYNONYM SUBGENUS 9911:BFFSN nidx=null parent=84SS6]
Cythereis (Pseudocythereis)
 - Cythereis (Pseudocythereis) [ACCEPTED SUBGENUS 9910:6ZTW nidx=null]
 + Cythereis (Pseudocythereis) Skogsberg, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH46 nidx=null]
 + Cythereis (Pseudocythereis) Skogsberg, 1928 [SYNONYM SUBGENUS 9911:BFH47 nidx=null parent=84SX6]
Cytherella (Cytherelloidea)
 - Cytherella (Cytherelloidea) [ACCEPTED SUBGENUS 9910:3Z5P nidx=null]
 + Cytherella (Cytherelloidea) Alexander, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDYQB nidx=null]
 + Cytherella (Cytherelloidea) Alexander, 1929 [SYNONYM SUBGENUS 9911:BDYQC nidx=null parent=84JSY]
Cytheretta (Flexus)
 - Cytheretta (Flexus) [ACCEPTED SUBGENUS 9910:85F2F nidx=null]
 + Cytheretta (Flexus) Neviani, 1928 [SYNONYM SUBGENUS 9911:BF6PV nidx=null parent=85F2G]
 + Cytheretta (Flexus) Neviani, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6PW nidx=null]
Cytheridea (Clithrocytheridea)
 - Cytheridea (Clithrocytheridea) [ACCEPTED SUBGENUS 9910:3R4S nidx=null]
 + Cytheridea (Clithrocytheridea) Stephenson, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4P4 nidx=null]
 + Cytheridea (Clithrocytheridea) Stephenson, 1936 [SYNONYM SUBGENUS 9911:BF4P5 nidx=null parent=84NN7]
Cytheridea (Haplocytheridea)
 - Cytheridea (Haplocytheridea) [ACCEPTED SUBGENUS 9910:635S6 nidx=null]
 + Cytheridea (Haplocytheridea) Stephenson, 1936 [SYNONYM SUBGENUS 9911:BF75Z nidx=null parent=84NYB]
 + Cytheridea (Haplocytheridea) Stephenson, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF762 nidx=null]
Cytheridea (Leptocythere)
 - Cytheridea (Leptocythere) [ACCEPTED SUBGENUS 9910:8V5NC nidx=null]
 + Cytheridea (Leptocythere) Sars, 1925 [SYNONYM SUBGENUS 9911:BF5WQ nidx=null parent=84PML]
 + Cytheridea (Leptocythere) Sars, 1925 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5WR nidx=null]
Dainella subgen. Praedainella
 - Dainella subgen. Praedainella [ACCEPTED SUBGENUS 9910:7ZWGB nidx=null]
 + Dainella subgen. Praedainella Hance, Hou & Vachard, 2011 [SYNONYM SUBGENUS 9911:BFGXL nidx=null parent=7ZWGC]
 + Dainella subgen. Praedainella Hance, Hou & Vachard, 2011 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGXM nidx=null]
Daixina subgen. Daixina
 - Daixina subgen. Daixina [ACCEPTED SUBGENUS 9910:7ZTV6 nidx=null]
 + Daixina subgen. Daixina Rozovskaya, 1949 [SYNONYM SUBGENUS 9911:BF5CM nidx=null parent=7ZTV7]
 + Daixina subgen. Daixina Rozovskaya, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5CN nidx=null]
Decelus
 - Decelus [ACCEPTED GENUS 9910:42CR nidx=null]
 + Decelus Hoffman & Keeton, 1960 [ACCEPTED GENUS 9911:BF3HT nidx=null]
 + Decelus Attems, 1953 [PROVISIONALLY_ACCEPTED GENUS 9911:BF3HV nidx=null]
Denticallosiinae
 - Denticallosiinae [ACCEPTED SUBFAMILY 9910:B6HSL nidx=null]
 + Denticallosiinae Poppe, Tagaro & S.-I Huang, 2023 [PROVISIONALLY_ACCEPTED SUBFAMILY 9911:BHS6P nidx=null]
Dentiscala
 - Dentiscala [ACCEPTED GENUS 9910:7P2W8 nidx=null]
 + Dentiscala de Boury, 1886 [PROVISIONALLY_ACCEPTED GENUS 9911:BF5JN nidx=null]
Dero (Dero)
 - Dero (Dero) [ACCEPTED SUBGENUS 9910:43GJ nidx=null]
 + Dero (Dero) Oken, 1815 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVRN nidx=null]
 + Dero (Dero) Oken, 1815 [SYNONYM SUBGENUS 9911:BDVRP nidx=null parent=84N4N]
Deuterammina subgen. Deuterammina
 - Deuterammina subgen. Deuterammina [ACCEPTED SUBGENUS 9910:62PNY nidx=null]
 + Deuterammina subgen. Deuterammina Brönnimann, 1976 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3L5 nidx=null]
 + Deuterammina subgen. Deuterammina Brönnimann, 1976 [SYNONYM SUBGENUS 9911:BF3L6 nidx=null parent=7P93H]
Devonocidaris
 - Devonocidaris [ACCEPTED GENUS 9910:43WG nidx=null]
 + Devonocidaris Thomas, 1924 [PROVISIONALLY_ACCEPTED GENUS 9911:BF5KS nidx=null]
Diacyclops languidus maisi
 - Diacyclops languidus maisi Plesa & Buzila, 1988 [ACCEPTED SUBSPECIES 9910:BDQT2 nidx=null]
 + Diacyclops languidus maisi Plesa & Buzila, 1998 [ACCEPTED SUBSPECIES 9911:BHSF8 nidx=null]
Diaptomus (Mastigodiaptomus)
 - Diaptomus (Mastigodiaptomus) [ACCEPTED SUBGENUS 9910:62ZDQ nidx=null]
 + Diaptomus (Mastigodiaptomus) Light, 1939 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFVS nidx=null]
 + Diaptomus (Mastigodiaptomus) Light, 1939 [SYNONYM SUBGENUS 9911:BDWH4 nidx=null parent=7PFG2]
Diaptomus (Prionodiaptomus)
 - Diaptomus (Prionodiaptomus) [ACCEPTED SUBGENUS 9910:6VSD nidx=null]
 + Diaptomus (Prionodiaptomus) Light, 1939 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGYB nidx=null]
 + Diaptomus (Prionodiaptomus) Light, 1939 [SYNONYM SUBGENUS 9911:BFGYC nidx=null parent=7PVLB]
Diaptomus (Skistodiaptomus)
 - Diaptomus (Skistodiaptomus) [ACCEPTED SUBGENUS 9910:7HYR nidx=null]
 + Diaptomus (Skistodiaptomus) Light, 1939 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFVV nidx=null]
 + Diaptomus (Skistodiaptomus) Light, 1939 [SYNONYM SUBGENUS 9911:BDY82 nidx=null parent=7PZSX]
Dibothrium
 - Dibothrium [ACCEPTED GENUS 9910:B8BXY nidx=null]
 + Dibothrium Diesing, 1850 [PROVISIONALLY_ACCEPTED GENUS 9911:BG7FW nidx=null]
Dicoptella (Paradicoptella)
 - Dicoptella (Paradicoptella) [ACCEPTED SUBGENUS 9910:B949N nidx=null]
 + Dicoptella (Paradicoptella) Jeannet in Lambert & Jeannet, 1935 [SYNONYM SUBGENUS 9911:BFJVQ nidx=null parent=7Q3XD]
 + Dicoptella (Paradicoptella) Jeannet in Lambert & Jeannet, 1935 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJVR nidx=null]
Dicoptella (Pseudodicoptella)
 - Dicoptella (Pseudodicoptella) [ACCEPTED SUBGENUS 9910:B94BG nidx=null]
 + Dicoptella (Pseudodicoptella) Jeannet in Lambert & Jeannet, 1935 [SYNONYM SUBGENUS 9911:BFJZ2 nidx=null parent=7Q3XD]
 + Dicoptella (Pseudodicoptella) Jeannet in Lambert & Jeannet, 1935 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJZ3 nidx=null]
Dicyclocidaris
 - Dicyclocidaris [ACCEPTED GENUS 9910:4549 nidx=null]
 + Dicyclocidaris Fell, 1950 [PROVISIONALLY_ACCEPTED GENUS 9911:BF5M6 nidx=null]
Diotis
 - Diotis [ACCEPTED GENUS 9910:4628 nidx=null]
 + Diotis Schmarda, 1859 [PROVISIONALLY_ACCEPTED GENUS 9911:BF5N6 nidx=null]
Diplodetus (Protobrissus)
 - Diplodetus (Protobrissus) [ACCEPTED SUBGENUS 9910:6XLF nidx=null]
 + Diplodetus (Protobrissus) Lambert, 1907 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGZQ nidx=null]
Diplommatina (Sinica) unicrenata
 - Diplommatina (Sinica) unicrenata Godwin-Austen, 1897 [SYNONYM SPECIES 9910:7R3RJ nidx=null parent=6CXTB]
 + Diplommatina (Sinica) unicrenata Godwin-Austen, 1892 [SYNONYM SPECIES 9911:BFMH7 nidx=null parent=BFMH6]
Diplommatina unicrenata
 - Diplommatina unicrenata Godwin-Austen, 1897 [ACCEPTED SPECIES 9910:6CXTB nidx=null]
 + Diplommatina unicrenata Godwin-Austen, 1892 [ACCEPTED SPECIES 9911:BFMH6 nidx=null]
Discocyclina subgen. Asterocyclina
 - Discocyclina subgen. Asterocyclina [ACCEPTED SUBGENUS 9910:7ZST7 nidx=null]
 + Discocyclina subgen. Asterocyclina Brönnimann, 1940 [SYNONYM SUBGENUS 9911:BF323 nidx=null parent=7ZST8]
 + Discocyclina subgen. Asterocyclina Brönnimann, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF324 nidx=null]
Discocyclina subgen. Discocyclina
 - Discocyclina subgen. Discocyclina [ACCEPTED SUBGENUS 9910:7ZTX9 nidx=null]
 + Discocyclina subgen. Discocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5PB nidx=null]
 + Discocyclina subgen. Discocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BF5PD nidx=null parent=7ZTXB]
Discorbis subgen. Discorbina
 - Discorbis subgen. Discorbina [ACCEPTED SUBGENUS 9910:46SM nidx=null]
 + Discorbis subgen. Discorbina Lipparini, 1932 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5PK nidx=null]
 + Discorbis subgen. Discorbina Lipparini, 1932 [SYNONYM SUBGENUS 9911:BF5PL nidx=null parent=7PBT8]
Distoma
 - Distoma [ACCEPTED GENUS 9910:9H86J nidx=null]
 + Distoma Savigny, 1816 [SYNONYM GENUS 9911:BG7PK nidx=null parent=7NZF8]
 + Distoma Retzius, 1786 [PROVISIONALLY_ACCEPTED GENUS 9911:BG7PL nidx=null]
Donax (Paradonax)
 - Donax (Paradonax) [ACCEPTED SUBGENUS 9910:B79DV nidx=null]
 + Donax (Paradonax) Cossmann, 1910 [SYNONYM SUBGENUS 9911:BGR7W nidx=null parent=7NXCF]
 + Donax (Paradonax) Cossmann, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGR7X nidx=null]
Doris
 - Doris Linnaeus, 1758 [PROVISIONALLY_ACCEPTED GENUS 9910:B7VVB nidx=null]
 - Doris Linnaeus, 1758 [PROVISIONALLY_ACCEPTED GENUS 9910:B8TZL nidx=null]
 + Doris Pennant, 1777 [SYNONYM GENUS 9911:BDT9F nidx=null parent=7NZR3]
 + Doris Koch, 1844 [SYNONYM GENUS 9911:BDT9G nidx=null parent=7NRTB]
Dorylaimus tenuis
 - Dorylaimus tenuis Micoletzky, 1922 [SYNONYM SPECIES 9910:8G7VJ nidx=null parent=8G4QH]
 + Dorylaimus tenuis Linstow, 1879 [SYNONYM SPECIES 9911:BFS2Y nidx=null parent=BF388]
Duplicaria
 - Duplicaria Dall, 1908 [PROVISIONALLY_ACCEPTED GENUS 9910:B3J93 nidx=null]
 + Duplicaria Vine, 1972 [SYNONYM GENUS 9911:BF3T7 nidx=null parent=84VNP]
Dysaphis (Dysaphis) physocaulis
 - Dysaphis (Dysaphis) physocaulis [ACCEPTED SPECIES 9910:386WW nidx=null]
 + Dysaphis (Dysaphis) physocaulis [ACCEPTED SPECIES 9911:BFMMM nidx=null]
Dytaster (Koremaster)
 - Dytaster (Koremaster) [ACCEPTED SUBGENUS 9910:58WD nidx=null]
 + Dytaster (Koremaster) Fisher, 1913 [SYNONYM SUBGENUS 9911:BF5MW nidx=null parent=7P7VP]
 + Dytaster (Koremaster) Fisher, 1913 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5MX nidx=null]
Earlandia subgen. Paratikhinella
 - Earlandia subgen. Paratikhinella [ACCEPTED SUBGENUS 9910:7ZW8K nidx=null]
 + Earlandia subgen. Paratikhinella Reitlinger, 1971 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGCV nidx=null]
 + Earlandia subgen. Paratikhinella Reitlinger, 1971 [SYNONYM SUBGENUS 9911:BFGCW nidx=null parent=7ZW8L]
Echinarachnius (Echinarachnius)
 - Echinarachnius (Echinarachnius) [ACCEPTED SUBGENUS 9910:632ZD nidx=null]
 + Echinarachnius (Echinarachnius) Gray, 1825 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3V5 nidx=null]
 + Echinarachnius (Echinarachnius) Gray, 1825 [SYNONYM SUBGENUS 9911:BF3V6 nidx=null parent=7NXX7]
Echinarachnius (Kewia)
 - Echinarachnius (Kewia) [ACCEPTED SUBGENUS 9910:584Y nidx=null]
 + Echinarachnius (Kewia) Nisiyama, 1935 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8PR nidx=null]
 + Echinarachnius (Kewia) Nisiyama, 1935 [SYNONYM SUBGENUS 9911:BF8PS nidx=null parent=7PZ8V]
Echinarachnius (Scaphechinus)
 - Echinarachnius (Scaphechinus) [ACCEPTED SUBGENUS 9910:7D24 nidx=null]
 + Echinarachnius (Scaphechinus) A. Agassiz, 1864 [SYNONYM SUBGENUS 9911:BF9SQ nidx=null parent=7PYWT]
 + Echinarachnius (Scaphechinus) A. Agassiz, 1864 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9SR nidx=null]
Echinaster
 - Echinaster Müller & Troschel, 1840 [PROVISIONALLY_ACCEPTED GENUS 9910:87FRC nidx=null]
 + Echinaster Gray, 1840 [SYNONYM GENUS 9911:BDVHF nidx=null parent=7NMJX]
Echinaster (Othilia)
 - Echinaster (Othilia) [ACCEPTED SUBGENUS 9910:B8VQQ nidx=null]
 + Echinaster (Othilia) Gray, 1840 [SYNONYM SUBGENUS 9911:BDW2M nidx=null parent=7NXXF]
 + Echinaster (Othilia) Gray, 1840 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDW2N nidx=null]
Echinobrissus (Nucleolites)
 - Echinobrissus (Nucleolites) [ACCEPTED SUBGENUS 9910:65SS nidx=null]
 + Echinobrissus (Nucleolites) Lamarck, 1801 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFF8D nidx=null]
 + Echinobrissus (Nucleolites) Lamarck, 1801 [SYNONYM SUBGENUS 9911:BFF8F nidx=null parent=7PQJM]
Echinolampas (Hypsoclypus)
 - Echinolampas (Hypsoclypus) [ACCEPTED SUBGENUS 9910:5333 nidx=null]
 + Echinolampas (Hypsoclypus) Pomel, 1869 [SYNONYM SUBGENUS 9911:BF8DY nidx=null parent=7PLCV]
 + Echinolampas (Hypsoclypus) Pomel, 1869 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8DZ nidx=null]
Echinolampas (Isolampas)
 - Echinolampas (Isolampas) [ACCEPTED SUBGENUS 9910:B947Y nidx=null]
 + Echinolampas (Isolampas) Lambert, 1906 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJNZ nidx=null]
 + Echinolampas (Isolampas) Lambert, 1906 [SYNONYM SUBGENUS 9911:BFJP2 nidx=null parent=7NXZ3]
Echinolampas (Macrolampas)
 - Echinolampas (Macrolampas) [ACCEPTED SUBGENUS 9910:B948R nidx=null]
 + Echinolampas (Macrolampas) Lambert, 1906 [SYNONYM SUBGENUS 9911:BFJRR nidx=null parent=7NXZ3]
 + Echinolampas (Macrolampas) Lambert, 1906 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJRS nidx=null]
Echinolampas (Progonolampas)
 - Echinolampas (Progonolampas) [ACCEPTED SUBGENUS 9910:6WJ7 nidx=null]
 + Echinolampas (Progonolampas) Bittner, 1892 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJYJ nidx=null]
 + Echinolampas (Progonolampas) Bittner, 1892 [SYNONYM SUBGENUS 9911:BFJYK nidx=null parent=7NXZ3]
Echinolampas (Psammolampas)
 - Echinolampas (Psammolampas) [ACCEPTED SUBGENUS 9910:B94BD nidx=null]
 + Echinolampas (Psammolampas) Lambert, 1913 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJYS nidx=null]
 + Echinolampas (Psammolampas) Lambert, 1913 [SYNONYM SUBGENUS 9911:BFJYT nidx=null parent=7NXZ3]
Elasmophyllia
 - Elasmophyllia [ACCEPTED GENUS 9910:85DL7 nidx=null]
 + Elasmophyllia de Fromentel, 1873 [PROVISIONALLY_ACCEPTED GENUS 9911:BF66P nidx=null]
 + Elasmophyllia d'Achiardi, 1875 [PROVISIONALLY_ACCEPTED GENUS 9911:BF66Q nidx=null]
 + Elasmophyllia d'Achiardi, 1875 [SYNONYM GENUS 9911:BF66R nidx=null parent=85CSC]
Ellatrivia
 - Ellatrivia Cotton & Godfrey, 1932 [PROVISIONALLY_ACCEPTED GENUS 9910:87G5H nidx=null]
 + Ellatrivia Iredale, 1931 [SYNONYM GENUS 9911:BF3WW nidx=null parent=7P3CR]
Elphidium subgen. Parrellina
 - Elphidium subgen. Parrellina [ACCEPTED SUBGENUS 9910:63LL5 nidx=null]
 + Elphidium subgen. Parrellina Carter, 1958 [SYNONYM SUBGENUS 9911:BF7WS nidx=null parent=7PSLK]
 + Elphidium subgen. Parrellina Carter, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7WT nidx=null]
Encyclobrephus
 - Encyclobrephus [ACCEPTED GENUS 9910:B797F nidx=null]
 + Encyclobrephus Sinha, 1949 [PROVISIONALLY_ACCEPTED GENUS 9911:BG87T nidx=null]
Endothyra
 - Endothyra Phillips, 1846 [PROVISIONALLY_ACCEPTED GENUS 9910:B7YGG nidx=null]
 - Endothyra Phillips, 1846 [PROVISIONALLY_ACCEPTED GENUS 9910:B8YLX nidx=null]
 - Endothyra Phillips, 1846 [PROVISIONALLY_ACCEPTED GENUS 9910:B8YLY nidx=null]
 + Endothyra Gude, 1899 [SYNONYM GENUS 9911:BF693 nidx=null parent=7P3FF]
Endothyra subgen. Birectoendothyra
 - Endothyra subgen. Birectoendothyra [ACCEPTED SUBGENUS 9910:7ZTH7 nidx=null]
 + Endothyra subgen. Birectoendothyra Lipina, 1970 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3GL nidx=null]
 + Endothyra subgen. Birectoendothyra Lipina, 1970 [SYNONYM SUBGENUS 9911:BF3GM nidx=null parent=7ZTH8]
Endothyra subgen. Endothyra
 - Endothyra subgen. Endothyra [ACCEPTED SUBGENUS 9910:7P3FC nidx=null]
 + Endothyra subgen. Endothyra Phillips, 1846 [SYNONYM SUBGENUS 9911:BF694 nidx=null parent=7P3FD]
 + Endothyra subgen. Endothyra Phillips, 1846 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF695 nidx=null]
Endothyra subgen. Latiendothyra
 - Endothyra subgen. Latiendothyra [ACCEPTED SUBGENUS 9910:B948D nidx=null]
 + Endothyra subgen. Latiendothyra Lipina, 1963 [SYNONYM SUBGENUS 9911:BFJQB nidx=null parent=7ZVC3]
 + Endothyra subgen. Latiendothyra Lipina, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJQD nidx=null]
Endothyra subgen. Rectoendothyra
 - Endothyra subgen. Rectoendothyra [ACCEPTED SUBGENUS 9910:7ZWS2 nidx=null]
 + Endothyra subgen. Rectoendothyra Brazhnikova, 1983 [SYNONYM SUBGENUS 9911:BFH9V nidx=null parent=7ZWS3]
 + Endothyra subgen. Rectoendothyra Brazhnikova, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH9W nidx=null]
Endothyrina
 - Endothyrina [ACCEPTED GENUS 9910:7ZTZZ nidx=null]
 + Endothyrina Mikhailov, 1939 [PROVISIONALLY_ACCEPTED GENUS 9911:BF697 nidx=null]
Entomoconchacea
 - Entomoconchacea [ACCEPTED SUPERFAMILY 9910:9WLTC nidx=null]
 + Entomoconchacea Sylvester-Bradley, 1953 [PROVISIONALLY_ACCEPTED SUPERFAMILY 9911:85GDH nidx=null]
Entomozoe (Nehdentomis)
 - Entomozoe (Nehdentomis) [ACCEPTED SUBGENUS 9910:85GPN nidx=null]
 + Entomozoe (Nehdentomis) Matern, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCR5 nidx=null]
 + Entomozoe (Nehdentomis) Matern, 1929 [SYNONYM SUBGENUS 9911:BFCR7 nidx=null parent=85GPP]
Entoprocta
 - Entoprocta Nitsche, 1870 [SYNONYM PHYLUM 9910:B6LDH nidx=null parent=47]
 + Entoprocta [ACCEPTED PHYLUM 9911:BDTWY nidx=null]
Eoagassizia
 - Eoagassizia [ACCEPTED GENUS 9910:4C9Z nidx=null]
 + Eoagassizia Grant & Hertlein, 1938 [PROVISIONALLY_ACCEPTED GENUS 9911:BF69S nidx=null]
Eoendothyranopsis subgen. Ninella
 - Eoendothyranopsis subgen. Ninella [ACCEPTED SUBGENUS 9910:7P9VD nidx=null]
 + Eoendothyranopsis subgen. Ninella Ponomarjova, 2009 [SYNONYM SUBGENUS 9911:BFDS6 nidx=null parent=7P9VF]
 + Eoendothyranopsis subgen. Ninella Ponomarjova, 2009 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFDS7 nidx=null]
Eoeponidella subgen. Eoeponidella
 - Eoeponidella subgen. Eoeponidella [ACCEPTED SUBGENUS 9910:4CDG nidx=null]
 + Eoeponidella subgen. Eoeponidella Bermúdez & Seiglie, 1964 [SYNONYM SUBGENUS 9911:BF6BG nidx=null parent=7NYTM]
 + Eoeponidella subgen. Eoeponidella Bermúdez & Seiglie, 1964 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6BH nidx=null]
Eoeponidella subgen. Umboasterella
 - Eoeponidella subgen. Umboasterella [ACCEPTED SUBGENUS 9910:B94DV nidx=null]
 + Eoeponidella subgen. Umboasterella Seiglie, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK6D nidx=null]
 + Eoeponidella subgen. Umboasterella Seiglie, 1965 [SYNONYM SUBGENUS 9911:BFK6F nidx=null parent=7NYTM]
Eofusulina subgen. Paraeofusulina
 - Eofusulina subgen. Paraeofusulina [ACCEPTED SUBGENUS 9910:7ZW74 nidx=null]
 + Eofusulina subgen. Paraeofusulina Putrya, 1956 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG59 nidx=null]
 + Eofusulina subgen. Paraeofusulina Putrya, 1956 [SYNONYM SUBGENUS 9911:BFG5B nidx=null parent=7ZW75]
Eopecten articulatus
 - Eopecten articulatus Paris & Richardson, 1916 [SYNONYM SPECIES 9910:B6D87 nidx=null parent=B6G3W]
 + Eopecten articulatus Paris & Richardson, 1915 [SYNONYM SPECIES 9911:BHS25 nidx=null parent=5Y94J]
Eorex
 - Eorex Nützel, 1997 [ACCEPTED GENUS 9910:7P3HQ nidx=null]
 + Eorex Nützel, 1998 [ACCEPTED GENUS 9911:BF6CK nidx=null]
Eorex multicarinatus
 - Eorex multicarinatus Nützel, 1997 [ACCEPTED SPECIES 9910:7R7KL nidx=null]
 + Eorex multicarinatus Nützel, 1998 [ACCEPTED SPECIES 9911:BFSLS nidx=null]
Eoschizopera (Eoschizopera)
 - Eoschizopera (Eoschizopera) [ACCEPTED SUBGENUS 9910:4CKT nidx=null]
 + Eoschizopera (Eoschizopera) Wells & Rao, 1976 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6CP nidx=null]
 + Eoschizopera (Eoschizopera) Wells & Rao, 1976 [SYNONYM SUBGENUS 9911:BF6CQ nidx=null parent=7NYVC]
Eostaffella subgen. Eoplectostaffella
 - Eostaffella subgen. Eoplectostaffella [ACCEPTED SUBGENUS 9910:B946P nidx=null]
 + Eostaffella subgen. Eoplectostaffella Postoyalko, 1990 [SYNONYM SUBGENUS 9911:BFJJS nidx=null parent=7ZV3Q]
 + Eostaffella subgen. Eoplectostaffella Postoyalko, 1990 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJT nidx=null]
Eostaffella subgen. Eostaffella
 - Eostaffella subgen. Eostaffella [ACCEPTED SUBGENUS 9910:7ZV3P nidx=null]
 + Eostaffella subgen. Eostaffella Rauzer-Chernousova, 1948 [SYNONYM SUBGENUS 9911:BF6CT nidx=null parent=7ZV3Q]
 + Eostaffella subgen. Eostaffella Rauzer-Chernousova, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6CW nidx=null]
Eostaffella subgen. Millerella
 - Eostaffella subgen. Millerella [ACCEPTED SUBGENUS 9910:7P8YY nidx=null]
 + Eostaffella subgen. Millerella Rauzer-Chernousova et al., 1951 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCC5 nidx=null]
 + Eostaffella subgen. Millerella Rauzer-Chernousova et al., 1951 [SYNONYM SUBGENUS 9911:BFCC6 nidx=null parent=7P8YZ]
Epistagma (Epistagma)
 - Epistagma (Epistagma) Emeljanov, 1999 [ACCEPTED SUBGENUS 9910:B82BQ nidx=null]
 + Epistagma (Epistagma) Emeljanov, 1999 [ACCEPTED SUBGENUS 9911:BFJM6 nidx=null]
Escharella
 - Escharella Gray, 1848 [PROVISIONALLY_ACCEPTED GENUS 9910:B7XYH nidx=null]
 - Escharella Gray, 1848 [PROVISIONALLY_ACCEPTED GENUS 9910:B8XYB nidx=null]
 + Escharella Cossmann, 1888 [SYNONYM GENUS 9911:BF42L nidx=null parent=7P86W]
Eucyclops (Isocyclops)
 - Eucyclops (Isocyclops) [ACCEPTED SUBGENUS 9910:9Z65N nidx=null]
 + Eucyclops (Isocyclops) Kiefer, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8L5 nidx=null]
 + Eucyclops (Isocyclops) Kiefer, 1957 [SYNONYM SUBGENUS 9911:BF8L6 nidx=null parent=9Z65Q]
Eucyclops (Tropocyclops)
 - Eucyclops (Tropocyclops) [ACCEPTED SUBGENUS 9910:835Q nidx=null]
 + Eucyclops (Tropocyclops) Kiefer, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFVZ nidx=null]
 + Eucyclops (Tropocyclops) Kiefer, 1927 [SYNONYM SUBGENUS 9911:BDVZK nidx=null parent=7Q5F8]
Eucythere (Rotundracythere)
 - Eucythere (Rotundracythere) [ACCEPTED SUBGENUS 9910:643WN nidx=null]
 + Eucythere (Rotundracythere) Mandelstam, 1958 [SYNONYM SUBGENUS 9911:BFG3Z nidx=null parent=84TBT]
 + Eucythere (Rotundracythere) Mandelstam, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG42 nidx=null]
Euglesa globularis
 - Euglesa globularis (Westerlund, 1873) [ACCEPTED SPECIES 9910:9LD8T nidx=null]
 + Euglesa globularis (Clessin, 1873) [ACCEPTED SPECIES 9911:7R8PB nidx=null]
Eulima amblytera
 - Eulima amblytera Verrill & K. J. Bush, 1900 [SYNONYM SPECIES 9910:7R8TK nidx=null parent=7S44J]
 + Eulima amblytera A. E. Verrill & K. J. Bush, 1900 [SYNONYM SPECIES 9911:6H9F5 nidx=null parent=7S44J]
Eupatagus (Brissopatagus)
 - Eupatagus (Brissopatagus) [ACCEPTED SUBGENUS 9910:3D93 nidx=null]
 + Eupatagus (Brissopatagus) Cotteau, 1863 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3RH nidx=null]
 + Eupatagus (Brissopatagus) Cotteau, 1863 [SYNONYM SUBGENUS 9911:BF3RJ nidx=null parent=7NV3S]
Eupatagus (Eupatagus)
 - Eupatagus (Eupatagus) [ACCEPTED SUBGENUS 9910:4G7J nidx=null]
 + Eupatagus (Eupatagus) L. Agassiz in Agassiz & Desor, 1847 [SYNONYM SUBGENUS 9911:BF46T nidx=null parent=7PF94]
 + Eupatagus (Eupatagus) L. Agassiz in Agassiz & Desor, 1847 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF46V nidx=null]
Eupatagus (Gymnopatagus)
 - Eupatagus (Gymnopatagus) [ACCEPTED SUBGENUS 9910:635Z3 nidx=null]
 + Eupatagus (Gymnopatagus) Döderlein, 1901 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4W9 nidx=null]
 + Eupatagus (Gymnopatagus) Döderlein, 1901 [SYNONYM SUBGENUS 9911:BF4WB nidx=null parent=7PHTD]
Eupatagus (Plagiobrissus)
 - Eupatagus (Plagiobrissus) [ACCEPTED SUBGENUS 9910:6R88 nidx=null]
 + Eupatagus (Plagiobrissus) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXSD nidx=null]
 + Eupatagus (Plagiobrissus) Pomel, 1883 [SYNONYM SUBGENUS 9911:BDXSF nidx=null parent=7PSDC]
Eupatagus (Spatangomorpha)
 - Eupatagus (Spatangomorpha) [ACCEPTED SUBGENUS 9910:8G94 nidx=null]
 + Eupatagus (Spatangomorpha) Boehm, 1882 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHLB nidx=null]
Eupolia brocki
 - Eupolia brocki ? [SYNONYM SPECIES 9910:BBF9M nidx=null parent=68D67]
 + Eupolia brocki ? [SYNONYM SPECIES 9911:BFT4Y nidx=null parent=68D67]
Eupolia hemprichi
 - Eupolia hemprichi ? [SYNONYM SPECIES 9910:BBF9N nidx=null parent=68D67]
 + Eupolia hemprichi ? [SYNONYM SPECIES 9911:BFT4Z nidx=null parent=68D67]
Eupolia quinquelineata
 - Eupolia quinquelineata ? [SYNONYM SPECIES 9910:BBF9P nidx=null parent=68D5Y]
 + Eupolia quinquelineata ? [SYNONYM SPECIES 9911:BFT52 nidx=null parent=68D5Y]
Euryleptidae
 - Euryleptidae Stimpson, 1857 [PROVISIONALLY_ACCEPTED FAMILY 9910:8ZXJS nidx=null]
 + Euryleptidae Lang, 1884 [PROVISIONALLY_ACCEPTED FAMILY 9911:7NHKN nidx=null]
 + Euryleptidae Lang, 1884 [SYNONYM FAMILY 9911:BDV8M nidx=null parent=7NHKM]
Eurytenes magellanicus
 - Eurytenes magellanicus sensu Lilljeborg, 1865 [SYNONYM SPECIES 9910:7W5PY nidx=null parent=3D76H]
 + Eurytenes magellanicus (H. Milne Edwards, 1848) [SYNONYM SPECIES 9911:BFT5V nidx=null parent=3D76H]
Euryurus taenia
 - Euryurus taenia [SYNONYM SPECIES 9910:8R9MF nidx=null parent=4QN79]
 + Euryurus taenia (Peters, 1864) [SYNONYM SPECIES 9911:BFT5Z nidx=null parent=4QN79]
Exogone (Parexogone)
 - Exogone (Parexogone) [ACCEPTED SUBGENUS 9910:6HS8 nidx=null]
 + Exogone (Parexogone) Mesnil & Caullery, 1918 [SYNONYM SUBGENUS 9911:BFFJM nidx=null parent=84SBW]
 + Exogone (Parexogone) Mesnil & Caullery, 1918 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFJN nidx=null]
Exogone (Sylline)
 - Exogone (Sylline) Claparède, 1864 [ACCEPTED SUBGENUS 9910:85KC7 nidx=null]
 + Exogone (Sylline) [sensu Claparède, 1864, non Grube, 1860] [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJKF nidx=null]
 + Exogone (Sylline) [sensu Claparède, 1864, non Grube, 1860] [SYNONYM SUBGENUS 9911:BFJKG nidx=null parent=84NNF]
Fabricia
 - Fabricia Blainville, 1828 [PROVISIONALLY_ACCEPTED GENUS 9910:87G2Z nidx=null]
 + Fabricia Gaertn. [SYNONYM UNRANKED 9911:BDYTW nidx=null parent=5ZFZ]
Fallotella subgen. Fallotella
 - Fallotella subgen. Fallotella [ACCEPTED SUBGENUS 9910:7ZV57 nidx=null]
 + Fallotella subgen. Fallotella Mangin, 1954 [SYNONYM SUBGENUS 9911:BF6N9 nidx=null parent=7ZV58]
 + Fallotella subgen. Fallotella Mangin, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6NB nidx=null]
Falsella
 - Falsella [ACCEPTED GENUS 9910:7ZV5B nidx=null]
 + Falsella Fordham, 1986 [PROVISIONALLY_ACCEPTED GENUS 9911:BF6NC nidx=null]
Falunia (Hiltermannicythere)
 - Falunia (Hiltermannicythere) [ACCEPTED SUBGENUS 9910:4X8X nidx=null]
 + Falunia (Hiltermannicythere) Bassiouni, 1970 [SYNONYM SUBGENUS 9911:BF839 nidx=null parent=84QJP]
 + Falunia (Hiltermannicythere) Bassiouni, 1970 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF83B nidx=null]
Fasciolites subgen. Fasciolites
 - Fasciolites subgen. Fasciolites [ACCEPTED SUBGENUS 9910:B946Z nidx=null]
 + Fasciolites subgen. Fasciolites Parkinson, 1811 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJKN nidx=null]
 + Fasciolites subgen. Fasciolites Parkinson, 1811 [SYNONYM SUBGENUS 9911:BFJKP nidx=null parent=7Y397]
Fasciolites subgen. Microfasciolites
 - Fasciolites subgen. Microfasciolites [ACCEPTED SUBGENUS 9910:B948Y nidx=null]
 + Fasciolites subgen. Microfasciolites Gaemers, 1978 [SYNONYM SUBGENUS 9911:BFJSB nidx=null parent=7Y397]
 + Fasciolites subgen. Microfasciolites Gaemers, 1978 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJSC nidx=null]
Faviidae
 - Faviidae Milne Edwards & Haime, 1857 [PROVISIONALLY_ACCEPTED FAMILY 9910:8ZXJT nidx=null]
 + Faviidae Gregory, 1900 [SYNONYM FAMILY 9911:BDV2F nidx=null parent=84K7Q]
Fernandezaster
 - Fernandezaster [ACCEPTED GENUS 9910:634NV nidx=null]
 + Fernandezaster Sánchez Roig, 1952 [PROVISIONALLY_ACCEPTED GENUS 9911:BF6P4 nidx=null]
Fibularia
 - Fibularia Lamarck, 1816 [PROVISIONALLY_ACCEPTED GENUS 9910:87H8X nidx=null]
 + Fibularia [SYNONYM GENUS 9911:4JXR nidx=null parent=84QT5]
Fierscyclops (Fierscyclops)
 - Fierscyclops (Fierscyclops) [ACCEPTED SUBGENUS 9910:4JZL nidx=null]
 + Fierscyclops (Fierscyclops) Karanovic, 2006 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZFW4 nidx=null]
 + Fierscyclops (Fierscyclops) Karanovic, 2006 [SYNONYM SUBGENUS 9911:BF6PD nidx=null parent=7PFYW]
Firmacidaris
 - Firmacidaris [ACCEPTED GENUS 9910:4K6W nidx=null]
 + Firmacidaris Lambert, 1937 [PROVISIONALLY_ACCEPTED GENUS 9911:BF6PN nidx=null]
Fissurina subgen. Produttine
 - Fissurina subgen. Produttine [ACCEPTED SUBGENUS 9910:B94B9 nidx=null]
 + Fissurina subgen. Produttine Seguenza, 1862 [SYNONYM SUBGENUS 9911:BFJYD nidx=null parent=7P2K4]
 + Fissurina subgen. Produttine Seguenza, 1862 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJYF nidx=null]
Fissurina subgen. Tubuline
 - Fissurina subgen. Tubuline [ACCEPTED SUBGENUS 9910:B94DS nidx=null]
 + Fissurina subgen. Tubuline Seguenza, 1862 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK5Z nidx=null]
 + Fissurina subgen. Tubuline Seguenza, 1862 [SYNONYM SUBGENUS 9911:BFK62 nidx=null parent=7P2K4]
Floria
 - Floria [ACCEPTED GENUS 9910:BBPQQ nidx=null]
 + Floria Turnsek & Mihajlovic, 1981 [PROVISIONALLY_ACCEPTED GENUS 9911:94L6P nidx=null]
Fridericia rotunda
 - Fridericia rotunda Friend, 1914 [SYNONYM SPECIES 9910:85R5Y nidx=null parent=6JP4R]
 + Fridericia rotunda Friend, 1913 [SYNONYM SPECIES 9911:BFTHX nidx=null parent=6JP4R]
Frondicularia subgen. Flabellina
 - Frondicularia subgen. Flabellina [ACCEPTED SUBGENUS 9910:84NQ7 nidx=null]
 + Frondicularia subgen. Flabellina Rzehak, 1891 [SYNONYM SUBGENUS 9911:BF4FK nidx=null parent=7PQ2N]
 + Frondicularia subgen. Flabellina Rzehak, 1891 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4FL nidx=null]
Frondicularia subgen. Frondicularia
 - Frondicularia subgen. Frondicularia [ACCEPTED SUBGENUS 9910:4L8C nidx=null]
 + Frondicularia subgen. Frondicularia Defrance, 1826 [SYNONYM SUBGENUS 9911:BF4H8 nidx=null parent=7P2TT]
 + Frondicularia subgen. Frondicularia Defrance, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4H9 nidx=null]
Frondicularia subgen. Frondiculina
 - Frondicularia subgen. Frondiculina [ACCEPTED SUBGENUS 9910:7ZV77 nidx=null]
 + Frondicularia subgen. Frondiculina Gerke, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJL4 nidx=null]
 + Frondicularia subgen. Frondiculina Gerke, 1957 [SYNONYM SUBGENUS 9911:BFJL5 nidx=null parent=7ZV78]
Frondicularia subgen. Ichthyolaria
 - Frondicularia subgen. Ichthyolaria [ACCEPTED SUBGENUS 9910:858V8 nidx=null]
 + Frondicularia subgen. Ichthyolaria Kopik, 1969 [SYNONYM SUBGENUS 9911:BF8F7 nidx=null parent=7ZVHF]
 + Frondicularia subgen. Ichthyolaria Kopik, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8F8 nidx=null]
Fusceulima lutea
 - Fusceulima lutea (W. Turton, 1832) [ACCEPTED SPECIES 9910:7RCP5 nidx=null]
 + Fusceulima lutea (W. H. Turton, 1932) [ACCEPTED SPECIES 9911:BFNCK nidx=null]
Fusulina subgen. Fusulinella
 - Fusulina subgen. Fusulinella [ACCEPTED SUBGENUS 9910:7ZV7N nidx=null]
 + Fusulina subgen. Fusulinella Ozawa, 1925 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6SP nidx=null]
 + Fusulina subgen. Fusulinella Ozawa, 1925 [SYNONYM SUBGENUS 9911:BF6SQ nidx=null parent=7ZV7P]
Fusulina subgen. Quasifusulinoides
 - Fusulina subgen. Quasifusulinoides [ACCEPTED SUBGENUS 9910:7ZWQC nidx=null]
 + Fusulina subgen. Quasifusulinoides T. S. Chen, 1963 [SYNONYM SUBGENUS 9911:BFH8M nidx=null parent=7ZWQD]
 + Fusulina subgen. Quasifusulinoides T. S. Chen, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH8N nidx=null]
Fusulinella subgen. Fusulinella
 - Fusulinella subgen. Fusulinella [ACCEPTED SUBGENUS 9910:B8YQR nidx=null]
 + Fusulinella subgen. Fusulinella Möller, 1877 in Staff & Wedekind, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6SR nidx=null]
 + Fusulinella subgen. Fusulinella Möller, 1877 in Staff & Wedekind, 1910 [SYNONYM SUBGENUS 9911:BF6SS nidx=null parent=7ZV7P]
Fusulinella subgen. Moellerites
 - Fusulinella subgen. Moellerites [ACCEPTED SUBGENUS 9910:7ZVTJ nidx=null]
 + Fusulinella subgen. Moellerites Solovieva, 1986 [SYNONYM SUBGENUS 9911:BFCDZ nidx=null parent=7ZVTK]
 + Fusulinella subgen. Moellerites Solovieva, 1986 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCF2 nidx=null]
Fusulinella subgen. Pseudofusulinella
 - Fusulinella subgen. Pseudofusulinella [ACCEPTED SUBGENUS 9910:7ZWLF nidx=null]
 + Fusulinella subgen. Pseudofusulinella Thompson, 1951 in Rozovskaya, 1975 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH4F nidx=null]
 + Fusulinella subgen. Pseudofusulinella Thompson, 1951 in Rozovskaya, 1975 [SYNONYM SUBGENUS 9911:BFH4G nidx=null parent=7ZWLG]
Fusulinella subgen. Uralofusulinella
 - Fusulinella subgen. Uralofusulinella [ACCEPTED SUBGENUS 9910:7ZXCJ nidx=null]
 + Fusulinella subgen. Uralofusulinella Chuvashov, 1980 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ22 nidx=null]
 + Fusulinella subgen. Uralofusulinella Chuvashov, 1980 [SYNONYM SUBGENUS 9911:BFJ23 nidx=null parent=7ZXCK]
Galaxea
 - Galaxea Oken, 1815 [PROVISIONALLY_ACCEPTED GENUS 9910:87G4T nidx=null]
 + Galaxea Milne Edwards & Haime, 1851 [PROVISIONALLY_ACCEPTED GENUS 9911:BDW4L nidx=null]
 + Galaxea Milne Edwards & Haime, 1851 [SYNONYM GENUS 9911:BDW4M nidx=null parent=84NR6]
Galeocephala
 - Galeocephala [ACCEPTED GENUS 9910:6354N nidx=null]
 + Galeocephala Stimpson, 1857 [PROVISIONALLY_ACCEPTED GENUS 9911:BF6T6 nidx=null]
Galerites (Galerites)
 - Galerites (Galerites) [ACCEPTED SUBGENUS 9910:4LVG nidx=null]
 + Galerites (Galerites) Lamarck, 1801 [SYNONYM SUBGENUS 9911:BF6TB nidx=null parent=7PGFN]
 + Galerites (Galerites) Lamarck, 1801 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6TC nidx=null]
Galerites (Pironaster)
 - Galerites (Pironaster) [ACCEPTED SUBGENUS 9910:B94B3 nidx=null]
 + Galerites (Pironaster) Munier-Chalmas, 1890 [SYNONYM SUBGENUS 9911:BFJXH nidx=null parent=7PGFN]
 + Galerites (Pironaster) Munier-Chalmas, 1890 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJXJ nidx=null]
Gasullia
 - Gasullia Ortiz de Zárate López, 1962 [ACCEPTED GENUS 9910:7P47R nidx=null]
 - Gasullia Ortiz de Zárate López, 1962 [PROVISIONALLY_ACCEPTED GENUS 9910:87G88 nidx=null]
 + Gasullia Ortiz de Zárate López, 1961 [ACCEPTED GENUS 9911:BF4KW nidx=null]
Gasullia riffensis
 - Gasullia riffensis (Kobelt, 1903) [SYNONYM SPECIES 9910:7RDMY nidx=null parent=7RHGQ]
 + Gasullia riffensis (Ortiz de Zarate López, 1962) [SYNONYM SPECIES 9911:BFTNF nidx=null parent=BFVBZ]
Gaudryina subgen. Gaudryina
 - Gaudryina subgen. Gaudryina [ACCEPTED SUBGENUS 9910:62T67 nidx=null]
 + Gaudryina subgen. Gaudryina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BDVJN nidx=null parent=7P38V]
 + Gaudryina subgen. Gaudryina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVJP nidx=null]
Gaudryina subgen. Plectina
 - Gaudryina subgen. Plectina [ACCEPTED SUBGENUS 9910:B3GWP nidx=null]
 + Gaudryina subgen. Plectina Franke, 1928 [SYNONYM SUBGENUS 9911:BDYNM nidx=null parent=7PSX8]
 + Gaudryina subgen. Plectina Franke, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDYNN nidx=null]
Gaudryina subgen. Pseudogaudryina
 - Gaudryina subgen. Pseudogaudryina [ACCEPTED SUBGENUS 9910:723P nidx=null]
 + Gaudryina subgen. Pseudogaudryina Cushman, 1936 [SYNONYM SUBGENUS 9911:BFH4H nidx=null parent=7PWF6]
 + Gaudryina subgen. Pseudogaudryina Cushman, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH4J nidx=null]
Gaudryina subgen. Siphogaudryina
 - Gaudryina subgen. Siphogaudryina [ACCEPTED SUBGENUS 9910:7HMT nidx=null]
 + Gaudryina subgen. Siphogaudryina Cushman, 1935 [SYNONYM SUBGENUS 9911:BFHK9 nidx=null parent=7PZXL]
 + Gaudryina subgen. Siphogaudryina Cushman, 1935 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHKB nidx=null]
Gavelinella subgen. Berthelina
 - Gavelinella subgen. Berthelina [ACCEPTED SUBGENUS 9910:7ZTGB nidx=null]
 + Gavelinella subgen. Berthelina Malapris, 1965 [SYNONYM SUBGENUS 9911:BF3F8 nidx=null parent=7ZTGC]
 + Gavelinella subgen. Berthelina Malapris, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3F9 nidx=null]
Gavelinella subgen. Gavelinella
 - Gavelinella subgen. Gavelinella [ACCEPTED SUBGENUS 9910:B8YRB nidx=null]
 + Gavelinella subgen. Gavelinella Brotzen, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6TS nidx=null]
 + Gavelinella subgen. Gavelinella Brotzen, 1942 [SYNONYM SUBGENUS 9911:BF6TT nidx=null parent=7PGMD]
Gigantopecten nodosiformis
 - Gigantopecten nodosiformis (Serres, 1837) [ACCEPTED SPECIES 9910:B6FP2 nidx=null]
 + Gigantopecten nodosiformis (Pusch, 1837) [ACCEPTED SPECIES 9911:BHS3Z nidx=null]
Globigerina subgen. Conoglobigerina
 - Globigerina subgen. Conoglobigerina [ACCEPTED SUBGENUS 9910:858TJ nidx=null]
 + Globigerina subgen. Conoglobigerina Morozova, 1961 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4TN nidx=null]
 + Globigerina subgen. Conoglobigerina Morozova, 1961 [SYNONYM SUBGENUS 9911:BF4TP nidx=null parent=7ZTQS]
Globigerina subgen. Eoglobigerina
 - Globigerina subgen. Eoglobigerina [ACCEPTED SUBGENUS 9910:858TX nidx=null]
 + Globigerina subgen. Eoglobigerina Morozova, 1959 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6BJ nidx=null]
 + Globigerina subgen. Eoglobigerina Morozova, 1959 [SYNONYM SUBGENUS 9911:BF6BK nidx=null parent=7ZV2R]
Globigerina subgen. Globigerinella
 - Globigerina subgen. Globigerinella [ACCEPTED SUBGENUS 9910:4NZ4 nidx=null]
 + Globigerina subgen. Globigerinella Cushman, 1927 in Bykova, 1960 [SYNONYM SUBGENUS 9911:BF6XX nidx=null parent=7PGYL]
 + Globigerina subgen. Globigerinella Cushman, 1927 in Bykova, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6XY nidx=null]
Globigerina subgen. Rhynchospira
 - Globigerina subgen. Rhynchospira [ACCEPTED SUBGENUS 9910:79NL nidx=null]
 + Globigerina subgen. Rhynchospira Reuss in Karrer, 1877 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2L nidx=null]
 + Globigerina subgen. Rhynchospira Reuss in Karrer, 1877 [SYNONYM SUBGENUS 9911:BFK2M nidx=null parent=7P3RH]
Globoendothyra subgen. Eogloboendothyra
 - Globoendothyra subgen. Eogloboendothyra [ACCEPTED SUBGENUS 9910:7ZV2S nidx=null]
 + Globoendothyra subgen. Eogloboendothyra Vdovenko, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6BL nidx=null]
 + Globoendothyra subgen. Eogloboendothyra Vdovenko, 1972 [SYNONYM SUBGENUS 9911:BF6BM nidx=null parent=7ZV2T]
Globoendothyra subgen. Globoomphalotis
 - Globoendothyra subgen. Globoomphalotis [ACCEPTED SUBGENUS 9910:7ZV9N nidx=null]
 + Globoendothyra subgen. Globoomphalotis Bogush, 1987 [SYNONYM SUBGENUS 9911:BF6Y7 nidx=null parent=7ZV9P]
 + Globoendothyra subgen. Globoomphalotis Bogush, 1987 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6Y8 nidx=null]
Globorotalia subgen. Acarinina
 - Globorotalia subgen. Acarinina [ACCEPTED SUBGENUS 9910:MGS nidx=null]
 + Globorotalia subgen. Acarinina Blow, 1979 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZBL nidx=null]
 + Globorotalia subgen. Acarinina Blow, 1979 [SYNONYM SUBGENUS 9911:BDZBM nidx=null parent=7NMP2]
Globorotalia subgen. Clavatorella
 - Globorotalia subgen. Clavatorella [ACCEPTED SUBGENUS 9910:7ZTPG nidx=null]
 + Globorotalia subgen. Clavatorella Blow, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4LP nidx=null]
 + Globorotalia subgen. Clavatorella Blow, 1969 [SYNONYM SUBGENUS 9911:BF4LQ nidx=null parent=7ZTPH]
Globorotalia subgen. Fohsella
 - Globorotalia subgen. Fohsella [ACCEPTED SUBGENUS 9910:7ZV6Y nidx=null]
 + Globorotalia subgen. Fohsella Bandy, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6QL nidx=null]
 + Globorotalia subgen. Fohsella Bandy, 1972 [SYNONYM SUBGENUS 9911:BF6QM nidx=null parent=7ZV6Z]
Globorotalia subgen. Globorotalia
 - Globorotalia subgen. Globorotalia [ACCEPTED SUBGENUS 9910:4P2J nidx=null]
 + Globorotalia subgen. Globorotalia Cushman, 1927 [SYNONYM SUBGENUS 9911:BDW59 nidx=null parent=7P3RT]
 + Globorotalia subgen. Globorotalia Cushman, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDW5B nidx=null]
Globorotalia subgen. Hirsutella
 - Globorotalia subgen. Hirsutella [ACCEPTED SUBGENUS 9910:4XJB nidx=null]
 + Globorotalia subgen. Hirsutella Bandy, 1972 [SYNONYM SUBGENUS 9911:BDW8D nidx=null parent=7P3RT]
 + Globorotalia subgen. Hirsutella Bandy, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDW8F nidx=null]
Globorotalia subgen. Morozovella
 - Globorotalia subgen. Morozovella [ACCEPTED SUBGENUS 9910:7ZVV3 nidx=null]
 + Globorotalia subgen. Morozovella Blow, 1979 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCH3 nidx=null]
 + Globorotalia subgen. Morozovella Blow, 1979 [SYNONYM SUBGENUS 9911:BFCH4 nidx=null parent=7ZVV4]
Globorotalia subgen. Truncorotalia
 - Globorotalia subgen. Truncorotalia [ACCEPTED SUBGENUS 9910:7ZXB7 nidx=null]
 + Globorotalia subgen. Truncorotalia Cushman & Bermúdez, 1949 [SYNONYM SUBGENUS 9911:BFK5T nidx=null parent=7P3RT]
 + Globorotalia subgen. Truncorotalia Cushman & Bermúdez, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK5V nidx=null]
Globorotalia subgen. Turborotalia
 - Globorotalia subgen. Turborotalia [ACCEPTED SUBGENUS 9910:7ZXBS nidx=null]
 + Globorotalia subgen. Turborotalia Cushman & Bermúdez, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHZ7 nidx=null]
 + Globorotalia subgen. Turborotalia Cushman & Bermúdez, 1949 [SYNONYM SUBGENUS 9911:BFHZ9 nidx=null parent=7ZXBT]
Globotruncana subgen. Globotruncana
 - Globotruncana subgen. Globotruncana [ACCEPTED SUBGENUS 9910:7ZV9Z nidx=null]
 + Globotruncana subgen. Globotruncana Cushman, 1927 [SYNONYM SUBGENUS 9911:BF6YJ nidx=null parent=7ZVB2]
 + Globotruncana subgen. Globotruncana Cushman, 1927 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6YK nidx=null]
Globotruncanita subgen. Elevatotruncana
 - Globotruncanita subgen. Elevatotruncana [ACCEPTED SUBGENUS 9910:B946H nidx=null]
 + Globotruncanita subgen. Elevatotruncana Korchagin, 2001 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJ3 nidx=null]
 + Globotruncanita subgen. Elevatotruncana Korchagin, 2001 [SYNONYM SUBGENUS 9911:BFJJ4 nidx=null parent=7ZVB4]
Glomeris pustulata
 - Glomeris pustulata (Fabricius, 1781) [PROVISIONALLY_ACCEPTED SPECIES 9910:3GCSR nidx=null]
 + Glomeris pustulata Eichwald, 1830 [PROVISIONALLY_ACCEPTED SPECIES 9911:3GCSQ nidx=null]
Glomospirella
 - Glomospirella Plummer, 1945 [PROVISIONALLY_ACCEPTED GENUS 9910:87HD5 nidx=null]
 + Glomospirella Reitlinger, 1950 [SYNONYM GENUS 9911:BF4PG nidx=null parent=7ZVBG]
 + Glomospirella Reitlinger, 1950 [PROVISIONALLY_ACCEPTED GENUS 9911:BF4PH nidx=null]
Glossidium
 - Glossidium [ACCEPTED GENUS 9910:4P8K nidx=null]
 + Glossidium Looss, 1899 [PROVISIONALLY_ACCEPTED GENUS 9911:BF6YZ nidx=null]
Glyptocidaris (Eoglyptocidaris)
 - Glyptocidaris (Eoglyptocidaris) [ACCEPTED SUBGENUS 9910:B946N nidx=null]
 + Glyptocidaris (Eoglyptocidaris) Nisiyama, 1966 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJQ nidx=null]
 + Glyptocidaris (Eoglyptocidaris) Nisiyama, 1966 [SYNONYM SUBGENUS 9911:BFJJR nidx=null parent=7PH46]
Goniaster (Astrogonium)
 - Goniaster (Astrogonium) [ACCEPTED SUBGENUS 9910:7NPYD nidx=null]
 + Goniaster (Astrogonium) Müller & Troschel, 1842 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF32V nidx=null]
 + Goniaster (Astrogonium) Müller & Troschel, 1842 [SYNONYM SUBGENUS 9911:BF32W nidx=null parent=7P43D]
Grammechinus
 - Grammechinus [ACCEPTED GENUS 9910:4QNS nidx=null]
 + Grammechinus Duncan & Sladen, 1885 [PROVISIONALLY_ACCEPTED GENUS 9911:BF72N nidx=null]
Granulatocincta capgrandi
 - Granulatocincta capgrandi (Tournouër, 1873) [ACCEPTED SPECIES 9910:8YMMM nidx=null]
 + Granulatocincta capgrandi (Tournouër, 1874) [ACCEPTED SPECIES 9911:BFTY8 nidx=null]
Greenidea (Trichosiphum) okajimai
 - Greenidea (Trichosiphum) okajimai [ACCEPTED SPECIES 9910:B88T6 nidx=null]
 + Greenidea (Trichosiphum) okajimai [ACCEPTED SPECIES 9911:BFTYF nidx=null]
Gualtieria (Blaviaster)
 - Gualtieria (Blaviaster) [ACCEPTED SUBGENUS 9910:B944T nidx=null]
 + Gualtieria (Blaviaster) Lambert, 1920 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJB4 nidx=null]
 + Gualtieria (Blaviaster) Lambert, 1920 [SYNONYM SUBGENUS 9911:BFJB5 nidx=null parent=7PHNQ]
Guttulina subgen. Guttulina
 - Guttulina subgen. Guttulina [ACCEPTED SUBGENUS 9910:4RMZ nidx=null]
 + Guttulina subgen. Guttulina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF74J nidx=null parent=7P4W9]
 + Guttulina subgen. Guttulina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF74K nidx=null]
Guttulina subgen. Pyrulina
 - Guttulina subgen. Pyrulina [ACCEPTED SUBGENUS 9910:7685 nidx=null]
 + Guttulina subgen. Pyrulina Cushman & Ozawa, 1928 [SYNONYM SUBGENUS 9911:BF9FY nidx=null parent=7PX7K]
 + Guttulina subgen. Pyrulina Cushman & Ozawa, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9FZ nidx=null]
Gymnocidaris
 - Gymnocidaris L. Agassiz, 1838 [PROVISIONALLY_ACCEPTED GENUS 9910:B7YLK nidx=null]
 - Gymnocidaris L. Agassiz, 1838 [PROVISIONALLY_ACCEPTED GENUS 9910:B8YTB nidx=null]
 + Gymnocidaris A. Agassiz, 1863 [SYNONYM GENUS 9911:BF74S nidx=null parent=7NZ9W]
Gymnodinium lohmannii
 - Gymnodinium lohmannii Paulsen, 1908 [AMBIGUOUS_SYNONYM SPECIES 9910:BBJ3G nidx=null parent=6KV8Q]
 + Gymnodinium lohmannii Paulsen, 1908 [AMBIGUOUS_SYNONYM SPECIES 9911:BFV35 nidx=null parent=6KV8Q]
 + Gymnodinium lohmannii Paulsen, 1908 [AMBIGUOUS_SYNONYM SPECIES 9911:BFV36 nidx=null parent=3HRSS]
Gyroidina orbicularis
 - Gyroidina orbicularis d'Orbigny in Parker, Jones & Brady, 1865 [PROVISIONALLY_ACCEPTED SPECIES 9910:88BMW nidx=null]
 + Gyroidina orbicularis d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:BFV3X nidx=null]
Haidaia gracilenta
 - Haidaia gracilenta (T. Kobayashi, 1965) [ACCEPTED SPECIES 9910:7RGYY nidx=null]
 + Haidaia gracilenta (T. Kobayashi, 1956) [ACCEPTED SPECIES 9911:BFV5G nidx=null]
Haigella
 - Haigella [ACCEPTED GENUS 9910:7ZVD6 nidx=null]
 + Haigella Georgescu, 2009 [PROVISIONALLY_ACCEPTED GENUS 9911:BF75N nidx=null]
Haihenia
 - Haihenia [ACCEPTED GENUS 9910:9H8DS nidx=null]
 + Haihenia Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7P4PQ nidx=null]
Haloporcellio sphinx
 - Haloporcellio sphinx Verhoeff, 1941 [SYNONYM SPECIES 9910:3JFPM nidx=null parent=4LW9J]
 + Haloporcellio sphinx (Verhoeff, 1931) [PROVISIONALLY_ACCEPTED SPECIES 9911:BFV6F nidx=null]
 + Haloporcellio sphinx (Verhoeff, 1931) [SYNONYM SPECIES 9911:BFV6G nidx=null parent=4LW9J]
Hantkenina subgen. Applinella
 - Hantkenina subgen. Applinella [ACCEPTED SUBGENUS 9910:B944F nidx=null]
 + Hantkenina subgen. Applinella Thalmann, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ93 nidx=null]
 + Hantkenina subgen. Applinella Thalmann, 1942 [SYNONYM SUBGENUS 9911:BFJ94 nidx=null parent=7ZVDG]
Hantkenina subgen. Hantkenina
 - Hantkenina subgen. Hantkenina [ACCEPTED SUBGENUS 9910:7ZVDF nidx=null]
 + Hantkenina subgen. Hantkenina Cushman, 1925 [SYNONYM SUBGENUS 9911:BF75X nidx=null parent=7ZVDG]
 + Hantkenina subgen. Hantkenina Cushman, 1925 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF75Y nidx=null]
Haplophragmina subgen. Haplophragmina
 - Haplophragmina subgen. Haplophragmina [ACCEPTED SUBGENUS 9910:7ZVDK nidx=null]
 + Haplophragmina subgen. Haplophragmina Reitlinger, 1950 in Brazhnikova, 1983 [SYNONYM SUBGENUS 9911:BF76C nidx=null parent=7ZVDL]
 + Haplophragmina subgen. Haplophragmina Reitlinger, 1950 in Brazhnikova, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF76D nidx=null]
Haplophragmina subgen. Haplophragminoides
 - Haplophragmina subgen. Haplophragminoides [ACCEPTED SUBGENUS 9910:B947Q nidx=null]
 + Haplophragmina subgen. Haplophragminoides Brazhnikova, 1983 [SYNONYM SUBGENUS 9911:BFJMP nidx=null parent=7ZVHT]
 + Haplophragmina subgen. Haplophragminoides Brazhnikova, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJMQ nidx=null]
Haplophthalmus abbreviatus aenariensis
 - Haplophthalmus abbreviatus aenariensis Verhoeff, 1944 [ACCEPTED SUBSPECIES 9910:7GV9R nidx=null]
 + Haplophthalmus abbreviatus aenariensis Verhoeff, 1942 [ACCEPTED SUBSPECIES 9911:BHKHR nidx=null]
Hatumia cobosi
 - Hatumia cobosi (Ortiz de Zárate López, 1962) [SYNONYM SPECIES 9910:7RHGN nidx=null parent=7RDMW]
 + Hatumia cobosi (Ortiz de Zárate López, 1962) [ACCEPTED SPECIES 9911:3JW7F nidx=null]
Hatumia riffensis
 - Hatumia riffensis (Kobelt, 1903) [ACCEPTED SPECIES 9910:7RHGQ nidx=null]
 + Hatumia riffensis (Ortiz de Zarate López, 1962) [ACCEPTED SPECIES 9911:BFVBZ nidx=null]
Hatumia zapateri
 - Hatumia zapateri (Hidalgo, 1870) [SYNONYM SPECIES 9910:7RHGR nidx=null parent=7RDMZ]
 + Hatumia zapateri (Hidalgo, 1870) [ACCEPTED SPECIES 9911:3JW7G nidx=null]
Hebeispira
 - Hebeispira [ACCEPTED GENUS 9910:B7YP4 nidx=null]
 + Hebeispira Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7P4VP nidx=null]
Hedbergella subgen. Hedbergella
 - Hedbergella subgen. Hedbergella [ACCEPTED SUBGENUS 9910:635VF nidx=null]
 + Hedbergella subgen. Hedbergella Brönnimann & Brown, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7J5 nidx=null]
 + Hedbergella subgen. Hedbergella Brönnimann & Brown, 1958 [SYNONYM SUBGENUS 9911:BF7J6 nidx=null parent=7PJL8]
Hedruris
 - Hedruris [ACCEPTED GENUS 9910:62TX5 nidx=null]
 + Hedruris Nitzsch, 1821 [ACCEPTED GENUS 9911:BDYJL nidx=null]
Helicobulinus sarcinosa
 - Helicobulinus sarcinosa (A. Férussac, 1821) [PROVISIONALLY_ACCEPTED SPECIES 9910:7RJ57 nidx=null]
 + Helicobulinus sarcinosa (Broderip, 1841) [PROVISIONALLY_ACCEPTED SPECIES 9911:84WXJ nidx=null]
Helicodonta (Caracolina) lenticula
 - Helicodonta (Caracolina) lenticula (Michaud, 1837) [SYNONYM SPECIES 9910:8TJQH nidx=null parent=QZSJ]
 + Helicodonta (Caracolina) lenticula (Michaud, 1831) [SYNONYM SPECIES 9911:BFVDF nidx=null parent=QZSJ]
Helix (Ampelita)
 - Helix (Ampelita) [ACCEPTED SUBGENUS 9910:629VL nidx=null]
 + Helix (Ampelita) H. Beck, 1837 [SYNONYM SUBGENUS 9911:BDZLB nidx=null parent=7NPF4]
 + Helix (Ampelita) H. Beck, 1837 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZLC nidx=null]
Helix (Isomeria) scalena
 - Helix (Isomeria) scalena E. von Martens, 1881 [SYNONYM SPECIES 9910:7RK4D nidx=null parent=7RRHC]
 + Helix (Isomeria) scalena E. von Martens, 1885 [SYNONYM SPECIES 9911:BFVGM nidx=null parent=BFPJQ]
Helix ariadnae
 - Helix ariadnae L. Pfeiffer, 1848 [SYNONYM SPECIES 9910:7RKMM nidx=null parent=3V2YV]
 + Helix ariadnae L. Pfeiffer, 1849 [SYNONYM SPECIES 9911:BFVH2 nidx=null parent=BGVHZ]
Helodrilus (Bimastus)
 - Helodrilus (Bimastus) [ACCEPTED SUBGENUS 9910:9G37B nidx=null]
 + Helodrilus (Bimastus) Moore, 1893 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BG4LY nidx=null]
 + Helodrilus (Bimastus) Moore, 1893 [SYNONYM SUBGENUS 9911:BG4LZ nidx=null parent=84LTR]
Hemiaster (Bolbaster)
 - Hemiaster (Bolbaster) [ACCEPTED SUBGENUS 9910:3B5S nidx=null]
 + Hemiaster (Bolbaster) Pomel, 1869 [SYNONYM SUBGENUS 9911:BDW23 nidx=null parent=7NTGG]
 + Hemiaster (Bolbaster) Pomel, 1869 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDW24 nidx=null]
Hemiaster (Leymeriaster)
 - Hemiaster (Leymeriaster) [ACCEPTED SUBGENUS 9910:62X36 nidx=null]
 + Hemiaster (Leymeriaster) Lambert & Thiéry, 1924 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9GV nidx=null]
 + Hemiaster (Leymeriaster) Lambert & Thiéry, 1924 [SYNONYM SUBGENUS 9911:BF9GW nidx=null parent=7PMRW]
Hemiaster (Macraster)
 - Hemiaster (Macraster) [ACCEPTED SUBGENUS 9910:5J7P nidx=null]
 + Hemiaster (Macraster) Roemer, 1888 [SYNONYM SUBGENUS 9911:BFBR5 nidx=null parent=7PN7B]
 + Hemiaster (Macraster) Roemer, 1888 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBR6 nidx=null]
Hemiaster (Mecaster)
 - Hemiaster (Mecaster) [ACCEPTED SUBGENUS 9910:5MC2 nidx=null]
 + Hemiaster (Mecaster) Pomel, 1883 [SYNONYM SUBGENUS 9911:BFBY4 nidx=null parent=7PNM7]
 + Hemiaster (Mecaster) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBY5 nidx=null]
Hemicidaris (Hypodiadema)
 - Hemicidaris (Hypodiadema) [ACCEPTED SUBGENUS 9910:52QL nidx=null]
 + Hemicidaris (Hypodiadema) Desor, 1855 [SYNONYM SUBGENUS 9911:BFJNV nidx=null parent=7PHSV]
 + Hemicidaris (Hypodiadema) Desor, 1855 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJNW nidx=null]
Hemidiaptomus (Occidodiaptomus)
 - Hemidiaptomus (Occidodiaptomus) [ACCEPTED SUBGENUS 9910:66CD nidx=null]
 + Hemidiaptomus (Occidodiaptomus) Borutzky in Borutzky, Stepanova & Kos, 1991 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7H6 nidx=null]
 + Hemidiaptomus (Occidodiaptomus) Borutzky in Borutzky, Stepanova & Kos, 1991 [SYNONYM SUBGENUS 9911:BF7H7 nidx=null parent=7PQLS]
Hemifusulina subgen. Hemifusulinella
 - Hemifusulina subgen. Hemifusulinella [ACCEPTED SUBGENUS 9910:7ZVFH nidx=null]
 + Hemifusulina subgen. Hemifusulinella Rumyantseva, 1962 [SYNONYM SUBGENUS 9911:BF7MC nidx=null parent=7ZVFJ]
 + Hemifusulina subgen. Hemifusulinella Rumyantseva, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7MD nidx=null]
Hemigordius subgen. Hemigordius
 - Hemigordius subgen. Hemigordius [ACCEPTED SUBGENUS 9910:7ZVFM nidx=null]
 + Hemigordius subgen. Hemigordius Schubert, 1908 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7MH nidx=null]
 + Hemigordius subgen. Hemigordius Schubert, 1908 [SYNONYM SUBGENUS 9911:BF7MK nidx=null parent=7ZVFN]
Hemingwayella (Parahemingwayella)
 - Hemingwayella (Parahemingwayella) [ACCEPTED SUBGENUS 9910:63K6L nidx=null]
 + Hemingwayella (Parahemingwayella) Dingle, 1984 [SYNONYM SUBGENUS 9911:BFG5V nidx=null parent=84S6R]
 + Hemingwayella (Parahemingwayella) Dingle, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG5W nidx=null]
Hemipedina (Phalacropedina)
 - Hemipedina (Phalacropedina) [ACCEPTED SUBGENUS 9910:B949X nidx=null]
 + Hemipedina (Phalacropedina) Lambert, 1900 [SYNONYM SUBGENUS 9911:BFJX2 nidx=null parent=7PJSV]
 + Hemipedina (Phalacropedina) Lambert, 1900 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJX3 nidx=null]
Henlea dicksoni multispinus
 - Henlea dicksoni multispinus Friend, 1912 [SYNONYM SUBSPECIES 9910:862BT nidx=null parent=3KV4B]
 + Henlea dicksoni multispinus Friend, 1913 [SYNONYM SUBSPECIES 9911:BHKKG nidx=null parent=3KV4B]
Heteraster (Enallaster)
 - Heteraster (Enallaster) [ACCEPTED SUBGENUS 9910:62S6V nidx=null]
 + Heteraster (Enallaster) d'Orbigny, 1853 [SYNONYM SUBGENUS 9911:BFJJ8 nidx=null parent=7PJZH]
 + Heteraster (Enallaster) d'Orbigny, 1853 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJ9 nidx=null]
Heterohelix subgen. Heterohelix
 - Heterohelix subgen. Heterohelix [ACCEPTED SUBGENUS 9910:7ZVG3 nidx=null]
 + Heterohelix subgen. Heterohelix Ehrenberg, 1843 [SYNONYM SUBGENUS 9911:BF7SC nidx=null parent=7ZVG4]
 + Heterohelix subgen. Heterohelix Ehrenberg, 1843 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7SD nidx=null]
Heterorchis
 - Heterorchis [ACCEPTED GENUS 9910:4WQB nidx=null]
 + Heterorchis Baylis, 1915 [PROVISIONALLY_ACCEPTED GENUS 9911:BF7ZD nidx=null]
Heterostegina subgen. Vlerkinella
 - Heterostegina subgen. Vlerkinella [ACCEPTED SUBGENUS 9910:B94DX nidx=null]
 + Heterostegina subgen. Vlerkinella Eames, Clarke, Banner, Smout & Blow, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK6S nidx=null]
 + Heterostegina subgen. Vlerkinella Eames, Clarke, Banner, Smout & Blow, 1968 [SYNONYM SUBGENUS 9911:BFK6T nidx=null parent=7P5YT]
Hinnites clypeatus
 - Hinnites clypeatus Contejean, 1859 [SYNONYM SPECIES 9910:B6JFW nidx=null parent=B6F7X]
 + Hinnites clypeatus Contejean, 1860 [SYNONYM SPECIES 9911:BHS74 nidx=null parent=B6F7X]
Hinnites reissi
 - Hinnites reissi Broon, 1862 [SYNONYM SPECIES 9910:B6GLT nidx=null parent=B6GJ5]
 + Hinnites reissi Bronn, 1862 [SYNONYM SPECIES 9911:BHS54 nidx=null parent=BHS4Y]
Hofkeruva subgen. Laminiuva
 - Hofkeruva subgen. Laminiuva [ACCEPTED SUBGENUS 9910:B9488 nidx=null]
 + Hofkeruva subgen. Laminiuva Vella, 1961 [SYNONYM SUBGENUS 9911:BFJQ7 nidx=null parent=7Q622]
 + Hofkeruva subgen. Laminiuva Vella, 1961 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJQ8 nidx=null]
Holaster (Labrotaxis)
 - Holaster (Labrotaxis) [ACCEPTED SUBGENUS 9910:59Q6 nidx=null]
 + Holaster (Labrotaxis) Casey, 1960 [SYNONYM SUBGENUS 9911:BFJPW nidx=null parent=7PW6Z]
 + Holaster (Labrotaxis) Casey, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJPX nidx=null]
Holectypus (Coenholectypus)
 - Holectypus (Coenholectypus) [ACCEPTED SUBGENUS 9910:3RZ5 nidx=null]
 + Holectypus (Coenholectypus) Pomel, 1883 [SYNONYM SUBGENUS 9911:BF4R4 nidx=null parent=7P36Y]
 + Holectypus (Coenholectypus) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4R5 nidx=null]
Homoeopetalus
 - Homoeopetalus [ACCEPTED GENUS 9910:4YBY nidx=null]
 + Homoeopetalus Arnold & H.L. Clark, 1934 [PROVISIONALLY_ACCEPTED GENUS 9911:BF86L nidx=null]
Hormathia alba
 - Hormathia alba (Andrès, 1880) [ACCEPTED SPECIES 9910:6MDMS nidx=null]
 + Hormathia alba (Andres, 1881) [ACCEPTED SPECIES 9911:BFVTW nidx=null]
Hunanopectinidae
 - Hunanopectinidae Yin Hong-fu, 1985 [ACCEPTED FAMILY 9910:7NWNC nidx=null]
 + Hunanopectinidae H.-F. Yin, 1985 [ACCEPTED FAMILY 9911:BDYY2 nidx=null]
Inaequipecten tournali
 - Inaequipecten tournali (Serres, 1829) [SYNONYM SPECIES 9910:B6HKR nidx=null parent=B6F68]
 + Inaequipecten tournali [sic] [SYNONYM SPECIES 9911:BHS6C nidx=null parent=B6F68]
Incertipoma
 - Incertipoma [ACCEPTED GENUS 9910:87GF3 nidx=null]
 + Incertipoma Bartsch, 1946 [PROVISIONALLY_ACCEPTED GENUS 9911:BF8GP nidx=null]
Indosphaera
 - Indosphaera Attems, 1935 [PROVISIONALLY_ACCEPTED GENUS 9910:87HRW nidx=null]
 + Indosphaera Attems, 1936 [SYNONYM GENUS 9911:BF5DS nidx=null parent=7PLM9]
 + Indosphaera Attems, 1936 [PROVISIONALLY_ACCEPTED GENUS 9911:BF5DT nidx=null]
Isaster
 - Isaster Desor, 1858 [PROVISIONALLY_ACCEPTED GENUS 9910:87GKX nidx=null]
 + Isaster Verrill, 1894 [SYNONYM GENUS 9911:BF5GF nidx=null parent=7PFPV]
Isocyclops
 - Isocyclops Kiefer, 1957 [PROVISIONALLY_ACCEPTED GENUS 9910:B7YT9 nidx=null]
 - Isocyclops Kiefer, 1957 [PROVISIONALLY_ACCEPTED GENUS 9910:B8Z88 nidx=null]
 + Isocyclops Alekseev, 2019 [PROVISIONALLY_ACCEPTED GENUS 9911:7ZFRY nidx=null]
 + Isocyclops Alekseev, 2019 [SYNONYM GENUS 9911:BF8L4 nidx=null parent=9Z65Q]
Isomeria scalena
 - Isomeria scalena (E. von Martens, 1881) [ACCEPTED SPECIES 9910:7RRHC nidx=null]
 + Isomeria scalena (E. von Martens, 1885) [ACCEPTED SPECIES 9911:BFPJQ nidx=null]
Karreriella subgen. Karrerulina
 - Karreriella subgen. Karrerulina [ACCEPTED SUBGENUS 9910:57L3 nidx=null]
 + Karreriella subgen. Karrerulina Finlay, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8P3 nidx=null]
 + Karreriella subgen. Karrerulina Finlay, 1940 [SYNONYM SUBGENUS 9911:BF8P4 nidx=null parent=7PM2D]
Kieritiaris
 - Kieritiaris [ACCEPTED GENUS 9910:587Z nidx=null]
 + Kieritiaris Vadet, 2001 [PROVISIONALLY_ACCEPTED GENUS 9911:BF8PW nidx=null]
Kikihia rosea
 - Kikihia rosea (Wise, 1977) non Walker, 1850 [SYNONYM SPECIES 9910:B6YN7 nidx=null parent=4SJCX]
 + Kikihia rosea Wise, 1977 [AMBIGUOUS_SYNONYM SPECIES 9911:BFPLX nidx=null parent=3R7JP]
 + Kikihia rosea (Wise, 1977) [SYNONYM SPECIES 9911:BFPLY nidx=null parent=4SJCX]
Kloedenellocopina
 - Kloedenellocopina [ACCEPTED SUBORDER 9910:8VVYP nidx=null]
 + Kloedenellocopina Scott, 1961 [PROVISIONALLY_ACCEPTED SUBORDER 9911:BDYND nidx=null]
Kongielechinus
 - Kongielechinus [ACCEPTED GENUS 9910:637YB nidx=null]
 + Kongielechinus Jesionek-Szymanska, 1979 [PROVISIONALLY_ACCEPTED GENUS 9911:BF8VM nidx=null]
Koninckocidaris
 - Koninckocidaris [ACCEPTED GENUS 9910:BBPVT nidx=null]
 + Koninckocidaris Dollo & Buisseret, 1888 [PROVISIONALLY_ACCEPTED GENUS 9911:BGCH5 nidx=null]
Labiosa (Raetella)
 - Labiosa (Raetella) [ACCEPTED SUBGENUS 9910:9H9MD nidx=null]
 + Labiosa (Raetella) Dall, 1898 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH97 nidx=null]
 + Labiosa (Raetella) Dall, 1898 [SYNONYM SUBGENUS 9911:BFH98 nidx=null parent=7PFJL]
Labrospira nitida
 - Labrospira nitida (Brady, 1881) [SYNONYM SPECIES 9910:3RKWM nidx=null parent=4LP4Y]
 + Labrospira nitida (Goës, 1896) [SYNONYM SPECIES 9911:BG7XB nidx=null parent=7SQ8J]
Lagena
 - Lagena Walker & Jacob, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B7W7B nidx=null]
 - Lagena Walker & Jacob, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VKR nidx=null]
 - Lagena Walker & Jacob, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VKS nidx=null]
 - Lagena Walker & Jacob, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VKT nidx=null]
 - Lagena Walker & Jacob, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VKV nidx=null]
 + Lagena Schumacher, 1817 [SYNONYM GENUS 9911:BDVLX nidx=null parent=7P725]
 + Lagena Röding, 1798 [SYNONYM GENUS 9911:BDVLY nidx=null parent=7PD2K]
Lagena subgen. Capitellina
 - Lagena subgen. Capitellina [ACCEPTED SUBGENUS 9910:7ZTLF nidx=null]
 + Lagena subgen. Capitellina Franke, 1925 [SYNONYM SUBGENUS 9911:BFJCL nidx=null parent=7P6SY]
 + Lagena subgen. Capitellina Franke, 1925 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJCM nidx=null]
Lagena subgen. Entosolenia
 - Lagena subgen. Entosolenia [ACCEPTED SUBGENUS 9910:B946L nidx=null]
 + Lagena subgen. Entosolenia Wiesner, 1931 [SYNONYM SUBGENUS 9911:BFJJG nidx=null parent=7PNBF]
 + Lagena subgen. Entosolenia Wiesner, 1931 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJH nidx=null]
Lagena subgen. Reussoolina
 - Lagena subgen. Reussoolina [ACCEPTED SUBGENUS 9910:63QLF nidx=null]
 + Lagena subgen. Reussoolina Colom, 1956 [SYNONYM SUBGENUS 9911:BF9MN nidx=null parent=7PXJR]
 + Lagena subgen. Reussoolina Colom, 1956 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9MP nidx=null]
Lambis scorpius scorpius
 - Lambis scorpius scorpius (Linnaeus, 1758) [SYNONYM SUBSPECIES 9910:7JX5Z nidx=null parent=6NW3L]
 + Lambis scorpius scorpius (Linnaeus, 1758) [ACCEPTED SUBSPECIES 9911:8SY6M nidx=null]
Laqueus pictus
 - Laqueus pictus (Chemnitz, 1839) [ACCEPTED SPECIES 9910:8GBP8 nidx=null]
 + Laqueus pictus (Dillwyn, 1817) [SYNONYM SPECIES 9911:BDVZZ nidx=null parent=6NXW6]
Latirus (Lathyropsis)
 - Latirus (Lathyropsis) [ACCEPTED SUBGENUS 9910:B8Z9M nidx=null]
 + Latirus (Lathyropsis) Oostingh, 1939 [SYNONYM SUBGENUS 9911:BF966 nidx=null parent=7P6ZS]
Lecompteus
 - Lecompteus [ACCEPTED GENUS 9910:9WXKJ nidx=null]
 + Lecompteus Van de Poel, 1959 [PROVISIONALLY_ACCEPTED GENUS 9911:BGCT5 nidx=null]
Lefortia (Procassidulus)
 - Lefortia (Procassidulus) [ACCEPTED SUBGENUS 9910:63Q3F nidx=null]
 + Lefortia (Procassidulus) Lambert, 1918 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVTF nidx=null]
 + Lefortia (Procassidulus) Lambert, 1918 [SYNONYM SUBGENUS 9911:BDVTG nidx=null parent=7PVN8]
Lenticulina subgen. Astacolus
 - Lenticulina subgen. Astacolus [ACCEPTED SUBGENUS 9910:B8XNW nidx=null]
 + Lenticulina subgen. Astacolus Bartenstein, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2ZV nidx=null]
 + Lenticulina subgen. Astacolus Bartenstein, 1948 [SYNONYM SUBGENUS 9911:BF2ZW nidx=null parent=7NPWR]
Lenticulina subgen. Darbyella
 - Lenticulina subgen. Darbyella [ACCEPTED SUBGENUS 9910:7ZTVG nidx=null]
 + Lenticulina subgen. Darbyella Pożaryska, 1957 [SYNONYM SUBGENUS 9911:BFJGW nidx=null parent=7P993]
 + Lenticulina subgen. Darbyella Pożaryska, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJGX nidx=null]
Lenticulina subgen. Guembelia
 - Lenticulina subgen. Guembelia [ACCEPTED SUBGENUS 9910:B8YT3 nidx=null]
 + Lenticulina subgen. Guembelia Prever, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF73Z nidx=null]
Lenticulina subgen. Hantkenia
 - Lenticulina subgen. Hantkenia [ACCEPTED SUBGENUS 9910:B947M nidx=null]
 + Lenticulina subgen. Hantkenia Prever, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJMM nidx=null]
 + Lenticulina subgen. Hantkenia Prever, 1902 [SYNONYM SUBGENUS 9911:BFJMN nidx=null parent=7PQKD]
Lenticulina subgen. Hemicristellaria
 - Lenticulina subgen. Hemicristellaria [ACCEPTED SUBGENUS 9910:4V39 nidx=null]
 + Lenticulina subgen. Hemicristellaria Stache, 1884 in Mityanina, 1963 [SYNONYM SUBGENUS 9911:BFJN5 nidx=null parent=7PJTX]
 + Lenticulina subgen. Hemicristellaria Stache, 1884 in Mityanina, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJN6 nidx=null]
Lenticulina subgen. Lenticulina
 - Lenticulina subgen. Lenticulina [ACCEPTED SUBGENUS 9910:B8VKY nidx=null]
 + Lenticulina subgen. Lenticulina Lamarck, 1804 [SYNONYM SUBGENUS 9911:BDVML nidx=null parent=7P993]
 + Lenticulina subgen. Lenticulina Lamarck, 1804 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVMM nidx=null]
Lenticulina subgen. Marginulinopsis
 - Lenticulina subgen. Marginulinopsis [ACCEPTED SUBGENUS 9910:5LB9 nidx=null]
 + Lenticulina subgen. Marginulinopsis Bartenstein, 1948 [SYNONYM SUBGENUS 9911:BF6F6 nidx=null parent=7PF66]
 + Lenticulina subgen. Marginulinopsis Bartenstein, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6F7 nidx=null]
Lenticulina subgen. Planularia
 - Lenticulina subgen. Planularia [ACCEPTED SUBGENUS 9910:B8Z5Z nidx=null]
 + Lenticulina subgen. Planularia Bartenstein, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF89Y nidx=null]
 + Lenticulina subgen. Planularia Bartenstein, 1948 [SYNONYM SUBGENUS 9911:BF89Z nidx=null parent=7PSKK]
Lenticulina subgen. Robulus
 - Lenticulina subgen. Robulus [ACCEPTED SUBGENUS 9910:B94DB nidx=null]
 + Lenticulina subgen. Robulus Montfort, 1808 [SYNONYM SUBGENUS 9911:BFK2Z nidx=null parent=7P993]
 + Lenticulina subgen. Robulus Montfort, 1808 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK32 nidx=null]
Lenticulina subgen. Saracenaria
 - Lenticulina subgen. Saracenaria [ACCEPTED SUBGENUS 9910:B92CQ nidx=null]
 + Lenticulina subgen. Saracenaria Bartenstein, 1948 [SYNONYM SUBGENUS 9911:BFG4R nidx=null parent=7PYP2]
 + Lenticulina subgen. Saracenaria Bartenstein, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG4S nidx=null]
Lenticulina subgen. Vaginulina
 - Lenticulina subgen. Vaginulina [ACCEPTED SUBGENUS 9910:85N9 nidx=null]
 + Lenticulina subgen. Vaginulina Hofker, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBZQ nidx=null]
 + Lenticulina subgen. Vaginulina Hofker, 1957 [SYNONYM SUBGENUS 9911:BFBZR nidx=null parent=7Q62J]
Lenticulina subgen. Vaginulinopsis
 - Lenticulina subgen. Vaginulinopsis [ACCEPTED SUBGENUS 9910:647J7 nidx=null]
 + Lenticulina subgen. Vaginulinopsis Bartenstein, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGMV nidx=null]
 + Lenticulina subgen. Vaginulinopsis Bartenstein, 1948 [SYNONYM SUBGENUS 9911:BFGMW nidx=null parent=7Q62K]
Lepidocentrus
 - Lepidocentrus [ACCEPTED GENUS 9910:5CFT nidx=null]
 + Lepidocentrus Müller, 1856 [PROVISIONALLY_ACCEPTED GENUS 9911:BF98Y nidx=null]
Lepidocyclina subgen. Amphilepidina
 - Lepidocyclina subgen. Amphilepidina [ACCEPTED SUBGENUS 9910:B9448 nidx=null]
 + Lepidocyclina subgen. Amphilepidina Douvillé, 1925 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ8N nidx=null]
 + Lepidocyclina subgen. Amphilepidina Douvillé, 1925 [SYNONYM SUBGENUS 9911:BFJ8P nidx=null parent=7ZVYB]
Lepidocyclina subgen. Cyclolepidina
 - Lepidocyclina subgen. Cyclolepidina [ACCEPTED SUBGENUS 9910:B945X nidx=null]
 + Lepidocyclina subgen. Cyclolepidina Whipple, 1934 [SYNONYM SUBGENUS 9911:BFJGF nidx=null parent=7ZVYB]
 + Lepidocyclina subgen. Cyclolepidina Whipple, 1934 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJGG nidx=null]
Lepidocyclina subgen. Eulepidina
 - Lepidocyclina subgen. Eulepidina [ACCEPTED SUBGENUS 9910:7ZV4P nidx=null]
 + Lepidocyclina subgen. Eulepidina H. Douvillé, 1911 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6K2 nidx=null]
 + Lepidocyclina subgen. Eulepidina H. Douvillé, 1911 [SYNONYM SUBGENUS 9911:BF6K3 nidx=null parent=7ZV4Q]
Lepidocyclina subgen. Helicolepidina
 - Lepidocyclina subgen. Helicolepidina [ACCEPTED SUBGENUS 9910:7ZVF2 nidx=null]
 + Lepidocyclina subgen. Helicolepidina Tobler, 1922 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7L7 nidx=null]
 + Lepidocyclina subgen. Helicolepidina Tobler, 1922 [SYNONYM SUBGENUS 9911:BF7L8 nidx=null parent=7ZVF3]
Lepidocyclina subgen. Isolepidina
 - Lepidocyclina subgen. Isolepidina [ACCEPTED SUBGENUS 9910:B947Z nidx=null]
 + Lepidocyclina subgen. Isolepidina H. Douvillé, 1915 [SYNONYM SUBGENUS 9911:BFJP4 nidx=null parent=7ZVNG]
 + Lepidocyclina subgen. Isolepidina H. Douvillé, 1915 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJP5 nidx=null]
Lepidocyclina subgen. Lepidocyclina
 - Lepidocyclina subgen. Lepidocyclina [ACCEPTED SUBGENUS 9910:7ZVNF nidx=null]
 + Lepidocyclina subgen. Lepidocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF992 nidx=null]
 + Lepidocyclina subgen. Lepidocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BF994 nidx=null parent=7ZVNG]
Lepidocyclina subgen. Multicyclina
 - Lepidocyclina subgen. Multicyclina [ACCEPTED SUBGENUS 9910:B9493 nidx=null]
 + Lepidocyclina subgen. Multicyclina Cushman, 1918 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJSN nidx=null]
 + Lepidocyclina subgen. Multicyclina Cushman, 1918 [SYNONYM SUBGENUS 9911:BFJSP nidx=null parent=7ZVYB]
Lepidocyclina subgen. Multilepidina
 - Lepidocyclina subgen. Multilepidina [ACCEPTED SUBGENUS 9910:7ZVVG nidx=null]
 + Lepidocyclina subgen. Multilepidina Hanzawa, 1932 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJST nidx=null]
 + Lepidocyclina subgen. Multilepidina Hanzawa, 1932 [SYNONYM SUBGENUS 9911:BFJSV nidx=null parent=7ZVYB]
Lepidocyclina subgen. Nephrolepidina
 - Lepidocyclina subgen. Nephrolepidina [ACCEPTED SUBGENUS 9910:7ZVY9 nidx=null]
 + Lepidocyclina subgen. Nephrolepidina H. Douvillé, 1911 [SYNONYM SUBGENUS 9911:BFDK8 nidx=null parent=7ZVYB]
 + Lepidocyclina subgen. Nephrolepidina H. Douvillé, 1911 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFDK9 nidx=null]
Lepidocyclina subgen. Pliolepidina
 - Lepidocyclina subgen. Pliolepidina [ACCEPTED SUBGENUS 9910:B94B5 nidx=null]
 + Lepidocyclina subgen. Pliolepidina H. Douvillé, 1915 [SYNONYM SUBGENUS 9911:BFJXZ nidx=null parent=7ZVYB]
 + Lepidocyclina subgen. Pliolepidina H. Douvillé, 1915 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJY2 nidx=null]
Lepidocyclina subgen. Polylepidina
 - Lepidocyclina subgen. Polylepidina [ACCEPTED SUBGENUS 9910:7ZWFC nidx=null]
 + Lepidocyclina subgen. Polylepidina Vaughan, 1924 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGWB nidx=null]
 + Lepidocyclina subgen. Polylepidina Vaughan, 1924 [SYNONYM SUBGENUS 9911:BFGWC nidx=null parent=7ZWFD]
Lepidocyclina subgen. Trybliolepidina
 - Lepidocyclina subgen. Trybliolepidina [ACCEPTED SUBGENUS 9910:B94DR nidx=null]
 + Lepidocyclina subgen. Trybliolepidina Yabe & Hanzawa, 1929 [SYNONYM SUBGENUS 9911:BFK5X nidx=null parent=7ZV4Q]
 + Lepidocyclina subgen. Trybliolepidina Yabe & Hanzawa, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK5Y nidx=null]
Lepidonotus (Thormora)
 - Lepidonotus (Thormora) [ACCEPTED SUBGENUS 9910:7W8N nidx=null]
 + Lepidonotus (Thormora) (Baird, 1865) [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBKB nidx=null]
 + Lepidonotus (Thormora) (Baird, 1865) [SYNONYM SUBGENUS 9911:BFBKC nidx=null parent=84V8P]
Lepidorbitoides subgen. Lepidorbitoides
 - Lepidorbitoides subgen. Lepidorbitoides [ACCEPTED SUBGENUS 9910:7ZVNJ nidx=null]
 + Lepidorbitoides subgen. Lepidorbitoides Silvestri, 1907 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF999 nidx=null]
 + Lepidorbitoides subgen. Lepidorbitoides Silvestri, 1907 [SYNONYM SUBGENUS 9911:BF99B nidx=null parent=7ZVNK]
Leptocythere (Callistocythere)
 - Leptocythere (Callistocythere) [ACCEPTED SUBGENUS 9910:3FKY nidx=null]
 + Leptocythere (Callistocythere) Ruggieri, 1953 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2G3 nidx=null]
 + Leptocythere (Callistocythere) Ruggieri, 1953 [SYNONYM SUBGENUS 9911:BF2G4 nidx=null parent=84M2Z]
Leptopoma (Leptopoma) bicolor
 - Leptopoma (Leptopoma) bicolor (L. Pfeiffer, 1854) [SYNONYM SPECIES 9910:7RVQL nidx=null parent=7RVVR]
 + Leptopoma (Leptopoma) bicolor L. Pfeiffer, 1852 [SYNONYM SPECIES 9911:BGSZ5 nidx=null parent=BGSZ6]
Leptopoma (Leptopoma) ignescens
 - Leptopoma (Leptopoma) ignescens (L. Pfeiffer, 1851) [SYNONYM SPECIES 9910:7RVR6 nidx=null parent=7RVWX]
 + Leptopoma (Leptopoma) ignescens L. Pfeiffer, 1852 [SYNONYM SPECIES 9911:BGSZB nidx=null parent=BGSZC]
Leptopoma bicolor
 - Leptopoma bicolor (L. Pfeiffer, 1854) [ACCEPTED SPECIES 9910:7RVVR nidx=null]
 + Leptopoma bicolor L. Pfeiffer, 1852 [ACCEPTED SPECIES 9911:BGSZ6 nidx=null]
Leptopoma ignescens
 - Leptopoma ignescens (L. Pfeiffer, 1851) [ACCEPTED SPECIES 9910:7RVWX nidx=null]
 + Leptopoma ignescens L. Pfeiffer, 1852 [ACCEPTED SPECIES 9911:BGSZC nidx=null]
Leptopoma sericatum
 - Leptopoma sericatum (L. Pfeiffer, 1853) [PROVISIONALLY_ACCEPTED SPECIES 9910:7RVZ3 nidx=null]
 + Leptopoma sericatum L. Pfeiffer, 1852 [ACCEPTED SPECIES 9911:BFPVL nidx=null]
Leptotrichus mersinensis mersinensis
 - Leptotrichus mersinensis mersinensis Verhoeff, 1949 [ACCEPTED SUBSPECIES 9910:7GZRV nidx=null]
 + Leptotrichus mersinensis mersinensis Verhoeff, 1941 [ACCEPTED SUBSPECIES 9911:BHKPV nidx=null]
Leuconia bathybia
 - Leuconia bathybia (Haeckel, 1870) [SYNONYM SPECIES 9910:724QW nidx=null parent=724BP]
 + Leuconia bathybia (Haeckel, 1869) [SYNONYM SPECIES 9911:BGTKT nidx=null parent=724BP]
Ligia stimpsoni
 - Ligia stimpsoni Miers, 1877 [SYNONYM SPECIES 9910:729DD nidx=null parent=729BK]
 + Ligia stimpsoni Miers, 1878 [SYNONYM SPECIES 9911:BGTZD nidx=null parent=729BK]
Ligidium germanicum herzegowinense
 - Ligidium germanicum herzegowinense Verhoeff, 1926 [SYNONYM SUBSPECIES 9910:5JCQR nidx=null parent=6Q9D5]
 + Ligidium germanicum herzegowinense Verhoeff, 1901 [SYNONYM SUBSPECIES 9911:BHKPX nidx=null parent=6Q9D5]
Linisa ariadnae
 - Linisa ariadnae (L. Pfeiffer, 1848) [ACCEPTED SPECIES 9910:3V2YV nidx=null]
 + Linisa ariadnae (L. Pfeiffer, 1849) [ACCEPTED SPECIES 9911:BGVHZ nidx=null]
Linthia (Linthia)
 - Linthia (Linthia) [ACCEPTED SUBGENUS 9910:62YHB nidx=null]
 + Linthia (Linthia) Desor, 1853 [SYNONYM SUBGENUS 9911:BF9RD nidx=null parent=7PMVJ]
 + Linthia (Linthia) Desor, 1853 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9RG nidx=null]
Linthuris
 - Linthuris [ACCEPTED GENUS 9910:7ZVP5 nidx=null]
 + Linthuris Montfort, 1808 [PROVISIONALLY_ACCEPTED GENUS 9911:BF9RK nidx=null]
Liothyrella arctica
 - Liothyrella arctica Friele, 1879 [SYNONYM SPECIES 9910:3V8RW nidx=null parent=GBKS]
 + Liothyrella arctica (Friele, 1877) [SYNONYM SPECIES 9911:BDW26 nidx=null parent=GBKS]
Liothyris neozelanica
 - Liothyris neozelanica Zezina, 1976 [SYNONYM SPECIES 9910:8GBZ5 nidx=null parent=3V8S6]
 + Liothyris neozelanica (Thomson, 1918) [SYNONYM SPECIES 9911:BDW29 nidx=null parent=3V8S6]
Liotina (Dentarene)
 - Liotina (Dentarene) [ACCEPTED SUBGENUS 9910:4389 nidx=null]
 + Liotina (Dentarene) Iredale, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3KG nidx=null]
 + Liotina (Dentarene) Iredale, 1929 [SYNONYM SUBGENUS 9911:BF3KH nidx=null parent=7P2VS]
Ljudmilena cespita
 - Ljudmilena cespita (Mortillet, 1854) [ACCEPTED SPECIES 9910:3VQLV nidx=null]
 + Ljudmilena cespita (Mortillet, 1853) [ACCEPTED SPECIES 9911:BGWBL nidx=null]
Longidorus cylindricapitatus
 - Longidorus cylindricapitatus Krnjaic, Roca, Krnjaic & Agostielli, 2005 [ACCEPTED SPECIES 9910:8GWCJ nidx=null]
 + Longidorus cylindricapitatus Krnjaic, Roca, Krnjaic & Agostinelli, 2006 [ACCEPTED SPECIES 9911:BGWNQ nidx=null]
Longidorus elongatus
 - Longidorus elongatus (de Man, 1876) [ACCEPTED SPECIES 9910:8FTCH nidx=null]
 + Longidorus elongatus (de Man, 1876) Micoletzky, 1922 [ACCEPTED SPECIES 9911:BF388 nidx=null]
Longiunguis saccharii
 - Longiunguis saccharii (Zehntner, 1897) [AMBIGUOUS_SYNONYM SPECIES 9910:8PD4X nidx=null parent=8PLQ6]
 + Longiunguis saccharii (Zehntner, 1897) [AMBIGUOUS_SYNONYM SPECIES 9911:BGWNS nidx=null parent=8PLQ6]
Lophocythere (Neurocythere)
 - Lophocythere (Neurocythere) [ACCEPTED SUBGENUS 9910:85GW6 nidx=null]
 + Lophocythere (Neurocythere) Whatley, 1970 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFDPQ nidx=null]
 + Lophocythere (Neurocythere) Whatley, 1970 [SYNONYM SUBGENUS 9911:BFDPR nidx=null parent=85GW7]
Lovenella
 - Lovenella Hincks, 1868 [PROVISIONALLY_ACCEPTED GENUS 9910:B7WHC nidx=null]
 + Lovenella G. O. Sars, 1878 [SYNONYM GENUS 9911:BDWG7 nidx=null parent=7NSCG]
Loxoconcha (Loxocorniculum)
 - Loxoconcha (Loxocorniculum) [ACCEPTED SUBGENUS 9910:5GY7 nidx=null]
 + Loxoconcha (Loxocorniculum) Benson & Coleman, 1963 [SYNONYM SUBGENUS 9911:8N7GJ nidx=null parent=84R75]
 + Loxoconcha (Loxocorniculum) Benson & Coleman, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:8N7GK nidx=null]
Lyriochlamys acuteauritus
 - Lyriochlamys acuteauritus (Schafhäutl, 1851) [ACCEPTED SPECIES 9910:B6HTL nidx=null]
 + Lyriochlamys acuteauritus [sic] [SYNONYM SPECIES 9911:BHS6R nidx=null parent=BHJC6]
Lysianassa alba
 - Lysianassa alba (Holmes, 1905) [SYNONYM SPECIES 9910:3WTWG nidx=null parent=6R2YF]
 + Lysianassa alba (Holmes, 1903) [SYNONYM SPECIES 9911:BGXTB nidx=null parent=6R2YF]
Lysianassa ceratina
 - Lysianassa ceratina sensu Gottlieb, 1960 [AMBIGUOUS_SYNONYM SPECIES 9910:7VQYN nidx=null parent=3WTWR]
 + Lysianassa ceratina (Walker, 1889) [AMBIGUOUS_SYNONYM SPECIES 9911:BFQ93 nidx=null parent=3WTWR]
Lysianassa gryllus
 - Lysianassa gryllus Goës, 1866 [SYNONYM SPECIES 9910:3WTX5 nidx=null parent=3D76H]
 + Lysianassa gryllus (Lichtenstein in Mandt, 1822) [SYNONYM SPECIES 9911:BGXXG nidx=null parent=3D76H]
Maccallumiella
 - Maccallumiella [ACCEPTED GENUS 9910:5HZL nidx=null]
 + Maccallumiella Yamaguti, 1952 [PROVISIONALLY_ACCEPTED GENUS 9911:BFBQS nidx=null]
Macrochlamys tournali
 - Macrochlamys tournali (Serres, 1829) [SYNONYM SPECIES 9910:B6H8C nidx=null parent=B6F68]
 + Macrochlamys tournali [sic] [SYNONYM SPECIES 9911:BHS5S nidx=null parent=B6F68]
Macropneustes (Deakia)
 - Macropneustes (Deakia) [ACCEPTED SUBGENUS 9910:429S nidx=null]
 + Macropneustes (Deakia) Pavay, 1875 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5FV nidx=null]
Macrosiphoniella (Macrosiphoniella) kirgisica
 - Macrosiphoniella (Macrosiphoniella) kirgisica [ACCEPTED SPECIES 9910:B8CNT nidx=null]
 + Macrosiphoniella (Macrosiphoniella) kirgisica [ACCEPTED SPECIES 9911:BGYKB nidx=null]
Macrosiphoniella (Macrosiphoniella) maculata
 - Macrosiphoniella (Macrosiphoniella) maculata [ACCEPTED SPECIES 9910:B79VQ nidx=null]
 + Macrosiphoniella (Macrosiphoniella) maculata [ACCEPTED SPECIES 9911:BGYKJ nidx=null]
Macrosiphum (Macrosiphum) doronicicola
 - Macrosiphum (Macrosiphum) doronicicola [ACCEPTED SPECIES 9910:BBWLX nidx=null]
 + Macrosiphum (Macrosiphum) doronicicola [ACCEPTED SPECIES 9911:BGYKX nidx=null]
Macrosiphum (Macrosiphum) polanense
 - Macrosiphum (Macrosiphum) polanense [ACCEPTED SPECIES 9910:B79WD nidx=null]
 + Macrosiphum (Macrosiphum) polanense [ACCEPTED SPECIES 9911:BGYLF nidx=null]
Maicuru
 - Maicuru [ACCEPTED GENUS 9910:9WYJT nidx=null]
 + Maicuru Freitas, 1900 [PROVISIONALLY_ACCEPTED GENUS 9911:BGDQ2 nidx=null]
Marginulina subgen. Saracenaria
 - Marginulina subgen. Saracenaria [ACCEPTED SUBGENUS 9910:B92CP nidx=null]
 + Marginulina subgen. Saracenaria Barnard, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG4T nidx=null]
 + Marginulina subgen. Saracenaria Barnard, 1949 [SYNONYM SUBGENUS 9911:BFG4V nidx=null parent=7PYP2]
Mediocris subgen. Plectomediocris
 - Mediocris subgen. Plectomediocris [ACCEPTED SUBGENUS 9910:7ZWDM nidx=null]
 + Mediocris subgen. Plectomediocris Brazhnikova & Vdovenko, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGTL nidx=null]
 + Mediocris subgen. Plectomediocris Brazhnikova & Vdovenko, 1983 [SYNONYM SUBGENUS 9911:BFGTM nidx=null parent=7ZWDN]
Megalocranchia papillata
 - Megalocranchia papillata Voss, 1962 [SYNONYM SPECIES 9910:73844 nidx=null parent=3K85F]
 + Megalocranchia papillata G. L. Voss, 1960 [SYNONYM SPECIES 9911:BH2VV nidx=null parent=3K85F]
Melampsalta hermansburgensis
 - Melampsalta hermansburgensis Distant, 1907 [SYNONYM SPECIES 9910:B4CBM nidx=null parent=6GHHK]
 + Melampsalta hermansburgensis Distant, 1907 [SYNONYM SPECIES 9911:BH38J nidx=null parent=6GHHK]
Melanella anteflexa
 - Melanella anteflexa [SYNONYM SPECIES 9910:3Z6TC nidx=null parent=5BMDM]
 + Melanella anteflexa (Locard, 1891) [SYNONYM SPECIES 9911:BH2VF nidx=null parent=5BMDM]
Melania bicolor
 - Melania bicolor Reeve, 1860 [SYNONYM SPECIES 9910:3Z79G nidx=null parent=6F43J]
 + Melania bicolor Reeve, 1861 [SYNONYM SPECIES 9911:BH3DD nidx=null parent=6F43J]
Melanoxantherium flocculossum
 - Melanoxantherium flocculossum (Weed, 1891) [SYNONYM SPECIES 9910:BBXXK nidx=null parent=7HT7C]
 + Melanoxantherium flocculossum (Weed, 1891) [SYNONYM SPECIES 9911:BH3ST nidx=null parent=7HT7C]
Melinna collare
 - Melinna collare Detinova, 1986 [ACCEPTED SPECIES 9910:72YHG nidx=null]
 + Melinna collare Detinova, 1985 [ACCEPTED SPECIES 9911:BFYMP nidx=null]
Mentissoidea rupicola
 - Mentissoidea rupicola (Mortillet, 1854) [ACCEPTED SPECIES 9910:3ZSFF nidx=null]
 + Mentissoidea rupicola (Mortillet, 1853) [ACCEPTED SPECIES 9911:BFQHQ nidx=null]
Mentissoidea rupicola rupicola
 - Mentissoidea rupicola rupicola (Mortillet, 1854) [ACCEPTED SUBSPECIES 9910:7HGKM nidx=null]
 + Mentissoidea rupicola rupicola (Mortillet, 1853) [ACCEPTED SUBSPECIES 9911:BHKSP nidx=null]
Mesostoma
 - Mesostoma Dugès, 1830 [PROVISIONALLY_ACCEPTED GENUS 9910:B7W9G nidx=null]
 + Mesostoma Heude, 1886 [SYNONYM GENUS 9911:BDVQC nidx=null parent=7PKDY]
 + Mesostoma Deshayes, 1861 [SYNONYM GENUS 9911:BDVQD nidx=null parent=7NX7Z]
Metachromadora (Metachromadoroides)
 - Metachromadora (Metachromadoroides) [ACCEPTED SUBGENUS 9910:8FZ7H nidx=null]
 + Metachromadora (Metachromadoroides) Timm, 1961 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFC8T nidx=null]
 + Metachromadora (Metachromadoroides) Timm, 1961 [SYNONYM SUBGENUS 9911:BFC8V nidx=null parent=8FZ7J]
Metaporinus (Tithonia)
 - Metaporinus (Tithonia) [ACCEPTED SUBGENUS 9910:648FZ nidx=null]
 + Metaporinus (Tithonia) Pomel, 1883 [SYNONYM SUBGENUS 9911:BDYDT nidx=null parent=7Q4KC]
 + Metaporinus (Tithonia) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDYDV nidx=null]
Metopolophium (Metopolophium) festucae
 - Metopolophium (Metopolophium) festucae [ACCEPTED SPECIES 9910:42HCD nidx=null]
 + Metopolophium (Metopolophium) festucae [ACCEPTED SPECIES 9911:BFQK8 nidx=null]
Micraster (Isopneustes)
 - Micraster (Isopneustes) [ACCEPTED SUBGENUS 9910:63YB8 nidx=null]
 + Micraster (Isopneustes) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8LB nidx=null]
Micraster (Micraster)
 - Micraster (Micraster) [ACCEPTED SUBGENUS 9910:63B8W nidx=null]
 + Micraster (Micraster) L. Agassiz, 1835 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVQM nidx=null]
 + Micraster (Micraster) L. Agassiz, 1835 [SYNONYM SUBGENUS 9911:BDVQN nidx=null parent=7PP4H]
Micraster (Paramicraster)
 - Micraster (Paramicraster) [ACCEPTED SUBGENUS 9910:B949R nidx=null]
 + Micraster (Paramicraster) Mączyńska, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJVW nidx=null]
 + Micraster (Paramicraster) Mączyńska, 1968 [SYNONYM SUBGENUS 9911:BFJVX nidx=null parent=7PP4H]
Micraster (Plesiaster)
 - Micraster (Plesiaster) [ACCEPTED SUBGENUS 9910:6SJV nidx=null]
 + Micraster (Plesiaster) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGTS nidx=null]
 + Micraster (Plesiaster) Pomel, 1883 [SYNONYM SUBGENUS 9911:BFGTT nidx=null parent=7PTXL]
Micrelenchus (Plumbelenchus)
 - Micrelenchus (Plumbelenchus) [ACCEPTED SUBGENUS 9910:BBQXK nidx=null]
 + Micrelenchus (Plumbelenchus) Finlay, 1926 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGJTL nidx=null]
 + Micrelenchus (Plumbelenchus) Finlay, 1926 [SYNONYM SUBGENUS 9911:BGJTN nidx=null parent=7NRT7]
Microtrochus
 - Microtrochus [ACCEPTED GENUS 9910:9G7TG nidx=null]
 + Microtrochus Kitahara & Cairns, 2021 [SYNONYM GENUS 9911:8PQ5X nidx=null parent=9GHXX]
 + Microtrochus Tenison-Woods, 1880 [PROVISIONALLY_ACCEPTED GENUS 9911:BFCBZ nidx=null]
Miliola subgen. Quinqueloculina
 - Miliola subgen. Quinqueloculina [ACCEPTED SUBGENUS 9910:63QGB nidx=null]
 + Miliola subgen. Quinqueloculina Egger, 1857 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9H9 nidx=null]
 + Miliola subgen. Quinqueloculina Egger, 1857 [SYNONYM SUBGENUS 9911:BF9HB nidx=null parent=7PX92]
Miliolina subgen. Quinqueloculina
 - Miliolina subgen. Quinqueloculina [ACCEPTED SUBGENUS 9910:B8ZBT nidx=null]
 + Miliolina subgen. Quinqueloculina Schwager, 1883 [SYNONYM SUBGENUS 9911:BF9HC nidx=null parent=7PX92]
 + Miliolina subgen. Quinqueloculina Schwager, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9HD nidx=null]
Miliolina subgen. Triloculina
 - Miliolina subgen. Triloculina [ACCEPTED SUBGENUS 9910:825L nidx=null]
 + Miliolina subgen. Triloculina Schwager, 1883 [SYNONYM SUBGENUS 9911:BFBPC nidx=null parent=7Q577]
 + Miliolina subgen. Triloculina Schwager, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBPD nidx=null]
Millerella subgen. Plectomillerella
 - Millerella subgen. Plectomillerella [ACCEPTED SUBGENUS 9910:7ZWDP nidx=null]
 + Millerella subgen. Plectomillerella Brazhnikova & Vdovenko, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGTN nidx=null]
 + Millerella subgen. Plectomillerella Brazhnikova & Vdovenko, 1983 [SYNONYM SUBGENUS 9911:BFGTP nidx=null parent=7ZWDQ]
Minojapanella subgen. Wutuella
 - Minojapanella subgen. Wutuella [ACCEPTED SUBGENUS 9910:7ZXGN nidx=null]
 + Minojapanella subgen. Wutuella J.C. Sheng, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ5T nidx=null]
 + Minojapanella subgen. Wutuella J.C. Sheng, 1963 [SYNONYM SUBGENUS 9911:BFJ5V nidx=null parent=7ZXGP]
Minyadidae
 - Minyadidae [ACCEPTED FAMILY 9910:CTT nidx=null]
 + Minyadidae Milne Edwards, 1857 [PROVISIONALLY_ACCEPTED FAMILY 9911:BDYZ4 nidx=null]
Miocidaris (Serpianotiaris)
 - Miocidaris (Serpianotiaris) [ACCEPTED SUBGENUS 9910:8G6F nidx=null]
 + Miocidaris (Serpianotiaris) Jeannet, 1933 [SYNONYM SUBGENUS 9911:BFHHT nidx=null parent=7Q8G4]
 + Miocidaris (Serpianotiaris) Jeannet, 1933 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHHV nidx=null]
Miogypsina subgen. Lepidosemicyclina
 - Miogypsina subgen. Lepidosemicyclina [ACCEPTED SUBGENUS 9910:7ZVNL nidx=null]
 + Miogypsina subgen. Lepidosemicyclina Mohan & Chatterji, 1956 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF99D nidx=null]
 + Miogypsina subgen. Lepidosemicyclina Mohan & Chatterji, 1956 [SYNONYM SUBGENUS 9911:BF99F nidx=null parent=7ZVNM]
Miogypsina subgen. Miogypsina
 - Miogypsina subgen. Miogypsina [ACCEPTED SUBGENUS 9910:7ZVSV nidx=null]
 + Miogypsina subgen. Miogypsina Sacco, 1893 [SYNONYM SUBGENUS 9911:BFCCX nidx=null parent=7ZVSW]
 + Miogypsina subgen. Miogypsina Sacco, 1893 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCCZ nidx=null]
Miogypsina subgen. Miogypsinella
 - Miogypsina subgen. Miogypsinella [ACCEPTED SUBGENUS 9910:7ZVSX nidx=null]
 + Miogypsina subgen. Miogypsinella Drooger, 1951 [SYNONYM SUBGENUS 9911:BFJSJ nidx=null parent=7ZVT5]
 + Miogypsina subgen. Miogypsinella Drooger, 1951 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJSK nidx=null]
Miogypsina subgen. Miogypsinita
 - Miogypsina subgen. Miogypsinita [ACCEPTED SUBGENUS 9910:7ZVSZ nidx=null]
 + Miogypsina subgen. Miogypsinita Drooger, 1952 [SYNONYM SUBGENUS 9911:BFCD2 nidx=null parent=7ZVT2]
 + Miogypsina subgen. Miogypsinita Drooger, 1952 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCD3 nidx=null]
Miogypsina subgen. Miogypsinoides
 - Miogypsina subgen. Miogypsinoides [ACCEPTED SUBGENUS 9910:7ZVT4 nidx=null]
 + Miogypsina subgen. Miogypsinoides Yabe & Hanzawa, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCD5 nidx=null]
 + Miogypsina subgen. Miogypsinoides Yabe & Hanzawa, 1928 [SYNONYM SUBGENUS 9911:BFCD7 nidx=null parent=7ZVT5]
Miogypsina subgen. Miolepidocyclina
 - Miogypsina subgen. Miolepidocyclina [ACCEPTED SUBGENUS 9910:7ZVT6 nidx=null]
 + Miogypsina subgen. Miolepidocyclina Barker & Grimsdale, 1937 [SYNONYM SUBGENUS 9911:BFCD8 nidx=null parent=7ZVT7]
 + Miogypsina subgen. Miolepidocyclina Barker & Grimsdale, 1937 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCD9 nidx=null]
Miogypsinoides subgen. Miogypsinoides
 - Miogypsinoides subgen. Miogypsinoides [ACCEPTED SUBGENUS 9910:B8ZYK nidx=null]
 + Miogypsinoides subgen. Miogypsinoides Yabe & Hanzawa, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCD4 nidx=null]
 + Miogypsinoides subgen. Miogypsinoides Yabe & Hanzawa, 1928 [SYNONYM SUBGENUS 9911:BFCD6 nidx=null parent=7ZVT5]
Mirechinus
 - Mirechinus [ACCEPTED GENUS 9910:63BTL nidx=null]
 + Mirechinus Nisiyama, 1966 [PROVISIONALLY_ACCEPTED GENUS 9911:BFCDG nidx=null]
Miromphalus
 - Miromphalus [ACCEPTED GENUS 9910:9H99Q nidx=null]
 + Miromphalus Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7P93Y nidx=null]
Misellina subgen. Misellina
 - Misellina subgen. Misellina [ACCEPTED SUBGENUS 9910:7ZVTD nidx=null]
 + Misellina subgen. Misellina Schenck & Thompson, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCDP nidx=null]
 + Misellina subgen. Misellina Schenck & Thompson, 1940 [SYNONYM SUBGENUS 9911:BFCDQ nidx=null parent=7ZVTF]
Mitrella
 - Mitrella Risso, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:8RZQ7 nidx=null]
 + Mitrella Swainson, 1831 [SYNONYM GENUS 9911:BDTKJ nidx=null parent=7PHTZ]
 + Mitrella Gray, 1868 [SYNONYM GENUS 9911:BDTKK nidx=null parent=7NRPV]
Mizunamia
 - Mizunamia [ACCEPTED GENUS 9910:5TYZ nidx=null]
 + Mizunamia Ishijima & Hatai, 1973 [PROVISIONALLY_ACCEPTED GENUS 9911:BFCDT nidx=null]
Mononchus (Cobbonchus)
 - Mononchus (Cobbonchus) [ACCEPTED SUBGENUS 9910:3RJG nidx=null]
 + Mononchus (Cobbonchus) Andrássy, 1978 [ACCEPTED SUBGENUS 9911:BF4QD nidx=null]
Monopia (Cypridinodes)
 - Monopia (Cypridinodes) [ACCEPTED SUBGENUS 9910:3YT2 nidx=null]
 + Monopia (Cypridinodes) Brady, 1902 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3FJ nidx=null]
 + Monopia (Cypridinodes) Brady, 1902 [SYNONYM SUBGENUS 9911:BF3FK nidx=null parent=84PDM]
Muhlfeldtia truncata
 - Muhlfeldtia truncata Fischer & Oehlert, 1891 [SYNONYM SPECIES 9910:89H5Y nidx=null parent=3YZZ4]
 + Muhlfeldtia truncata (Linnaeus, 1767) [SYNONYM SPECIES 9911:BDW37 nidx=null parent=3YZZ4]
Musculus
 - Musculus Röding, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:9XDHV nidx=null]
 + Musculus Mörch, 1853 [SYNONYM GENUS 9911:BF75Q nidx=null parent=7PJ5H]
Myophorella (Haidaia) gracilenta
 - Myophorella (Haidaia) gracilenta T. Kobayashi, 1965 [SYNONYM SPECIES 9910:7S8PH nidx=null parent=7RGYY]
 + Myophorella (Haidaia) gracilenta T. Kobayashi, 1956 [SYNONYM SPECIES 9911:BH52X nidx=null parent=BFV5G]
Myophorella (Promyophorella) hashimotoi
 - Myophorella (Promyophorella) hashimotoi T. Kobayashi, 1965 [SYNONYM SPECIES 9910:7S8QF nidx=null parent=7ST78]
 + Myophorella (Promyophorella) hashimotoi T. Kobayashi, 1956 [SYNONYM SPECIES 9911:BH52Z nidx=null parent=BH9Z4]
Myophorella (Promyophorella) imamurai
 - Myophorella (Promyophorella) imamurai T. Kobayashi, 1965 [SYNONYM SPECIES 9910:7S8QJ nidx=null parent=7ST79]
 + Myophorella (Promyophorella) imamurai T. Kobayashi, 1956 [SYNONYM SPECIES 9911:BH532 nidx=null parent=BH9Z5]
Myophorella alina
 - Myophorella alina (Contejean, 1859) [ACCEPTED SPECIES 9910:7S8R9 nidx=null]
 + Myophorella alina (Contejean, 1860) [ACCEPTED SPECIES 9911:BH535 nidx=null]
Myophoria tricostata
 - Myophoria tricostata T. Kobayashi & Tamura, 1868 [ACCEPTED SPECIES 9910:7S8RX nidx=null]
 + Myophoria tricostata T. Kobayashi & Tamura, 1968 [ACCEPTED SPECIES 9911:BH538 nidx=null]
Myriaster clavosa
 - Myriaster clavosa [SYNONYM SPECIES 9910:86X5V nidx=null parent=4ZRVV]
 + Myriaster clavosa (Ridley, 1884) [SYNONYM SPECIES 9911:BH53C nidx=null parent=4ZRVV]
Myriaster quadrata
 - Myriaster quadrata [SYNONYM SPECIES 9910:86X5W nidx=null parent=4ZRVV]
 + Myriaster quadrata Sollas, 1886 [SYNONYM SPECIES 9911:BH53D nidx=null parent=4ZRVV]
Myriaster simplicifurca
 - Myriaster simplicifurca [SYNONYM SPECIES 9910:86X5X nidx=null parent=4ZRZ7]
 + Myriaster simplicifurca Sollas, 1886 [SYNONYM SPECIES 9911:BH53F nidx=null parent=4ZRZ7]
Myriaster subtilis
 - Myriaster subtilis [SYNONYM SPECIES 9910:86X5Y nidx=null parent=4ZS25]
 + Myriaster subtilis Sollas, 1886 [SYNONYM SPECIES 9911:BH53G nidx=null parent=4ZS25]
Mytilopsis
 - Mytilopsis Conrad, 1857 [ACCEPTED GENUS 9910:7P9FZ nidx=null]
 + Mytilopsis Conrad, 1858 [ACCEPTED GENUS 9911:BDYCS nidx=null]
Nannonyx kidderi
 - Nannonyx kidderi Chilton, 1909 [SYNONYM SPECIES 9910:45MKZ nidx=null parent=75S4W]
 + Nannonyx kidderi (S.I. Smith, 1876) [SYNONYM SPECIES 9911:BH563 nidx=null parent=75S4W]
Nannopyrgula
 - Nannopyrgula [ACCEPTED GENUS 9910:9H9BF nidx=null]
 + Nannopyrgula Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7P9HP nidx=null]
Nanohalus
 - Nanohalus [ACCEPTED GENUS 9910:BC4CR nidx=null]
 + Nanohalus Stenzel & Twining, 1957 [PROVISIONALLY_ACCEPTED GENUS 9911:BH753 nidx=null]
Nassarius (Alectrion) insulindicus
 - Nassarius (Alectrion) insulindicus Oostingh, 1939 [SYNONYM SPECIES 9910:6S6H4 nidx=null parent=45RV8]
 + Nassarius (Alectrion) insulindicus Oostingh, 1933 [SYNONYM SPECIES 9911:BH5CZ nidx=null parent=45RV8]
Nassarius (Hinia) prefestivus
 - Nassarius (Hinia) prefestivus MacNeil, 1960 [SYNONYM SPECIES 9910:9G5HX nidx=null parent=45RPN]
 + Nassarius (Hinia) prefestivus MacNeil, 1961 [SYNONYM SPECIES 9911:BH5D5 nidx=null parent=45RPN]
Nassarius (Niotha) beureumensis
 - Nassarius (Niotha) beureumensis Oostingh, 1933 [SYNONYM SPECIES 9910:45RCF nidx=null parent=45RKR]
 + Nassarius (Niotha) beureumensis Oostingh, 1939 [SYNONYM SPECIES 9911:BH5D8 nidx=null parent=BH5D9]
Nassarius (Niotha) fulleri
 - Nassarius (Niotha) fulleri MacNeil, 1960 [SYNONYM SPECIES 9910:45RCW nidx=null parent=73TZ8]
 + Nassarius (Niotha) fulleri MacNeil, 1961 [SYNONYM SPECIES 9911:BH5DB nidx=null parent=73TZ8]
Nassarius (Tritia) insulindicus
 - Nassarius (Tritia) insulindicus (Oostingh, 1939) [SYNONYM SPECIES 9910:45RFJ nidx=null parent=45RV8]
 + Nassarius (Tritia) insulindicus (Oostingh, 1933) [SYNONYM SPECIES 9911:BH5D2 nidx=null parent=45RV8]
Nassarius beureumensis
 - Nassarius beureumensis Oostingh, 1933 [ACCEPTED SPECIES 9910:45RKR nidx=null]
 + Nassarius beureumensis Oostingh, 1939 [ACCEPTED SPECIES 9911:BH5D9 nidx=null]
Natica (Lunatia)
 - Natica (Lunatia) [ACCEPTED SUBGENUS 9910:B8ZJD nidx=null]
 + Natica (Lunatia) Gray, 1847 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFB7L nidx=null]
 + Natica (Lunatia) Gray, 1847 [SYNONYM SUBGENUS 9911:BFB7N nidx=null parent=7NZVH]
Nemoceratina (Pariceratina)
 - Nemoceratina (Pariceratina) [ACCEPTED SUBGENUS 9910:63ZJW nidx=null]
 + Nemoceratina (Pariceratina) Gruendel & Kozur, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGDL nidx=null]
 + Nemoceratina (Pariceratina) Gruendel & Kozur, 1972 [SYNONYM SUBGENUS 9911:BFGDM nidx=null parent=84VVD]
Neocyclotus (Neocyclotus) stramineus
 - Neocyclotus (Neocyclotus) stramineus (Reeve, 1843) [SYNONYM SPECIES 9910:7SB4Q nidx=null parent=7SB82]
 + Neocyclotus (Neocyclotus) stramineus (G. B. Sowerby I, 1843) [SYNONYM SPECIES 9911:BH5LS nidx=null parent=BH5LT]
Neocyclotus stramineus
 - Neocyclotus stramineus (Reeve, 1843) [ACCEPTED SPECIES 9910:7SB82 nidx=null]
 + Neocyclotus stramineus (G. B. Sowerby I, 1843) [ACCEPTED SPECIES 9911:BH5LT nidx=null]
Neocyprideis (Miocyprideis)
 - Neocyprideis (Miocyprideis) [ACCEPTED SUBGENUS 9910:5TGV nidx=null]
 + Neocyprideis (Miocyprideis) Kollmann, 1960 [SYNONYM SUBGENUS 9911:BFCCV nidx=null parent=84RJF]
 + Neocyprideis (Miocyprideis) Kollmann, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCCW nidx=null]
Neodendrocoelum
 - Neodendrocoelum [ACCEPTED GENUS 9910:63DTB nidx=null]
 + Neodendrocoelum Stankovic & Komarek, 1927 [PROVISIONALLY_ACCEPTED GENUS 9911:BFD29 nidx=null]
Neofridericianella
 - Neofridericianella [ACCEPTED GENUS 9910:5ZGP nidx=null]
 + Neofridericianella Gupta & Sachdeva, 1990 [PROVISIONALLY_ACCEPTED GENUS 9911:BFD3V nidx=null]
Nereis (Neanthes)
 - Nereis (Neanthes) [ACCEPTED SUBGENUS 9910:5Y2J nidx=null]
 + Nereis (Neanthes) Kinberg, 1865 [SYNONYM SUBGENUS 9911:BDVR4 nidx=null parent=84QQC]
 + Nereis (Neanthes) Kinberg, 1865 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVR5 nidx=null]
Nereis (Nereis)
 - Nereis (Nereis) [ACCEPTED SUBGENUS 9910:63FH9 nidx=null]
 + Nereis (Nereis) Linnaeus, 1758 [SYNONYM SUBGENUS 9911:BDVRH nidx=null parent=84QYH]
 + Nereis (Nereis) Linnaeus, 1758 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVRJ nidx=null]
Nereis (Perinereis)
 - Nereis (Perinereis) [ACCEPTED SUBGENUS 9910:6LBQ nidx=null]
 + Nereis (Perinereis) Kinberg, 1865 [SYNONYM SUBGENUS 9911:BDXSY nidx=null parent=84RXY]
 + Nereis (Perinereis) Kinberg, 1865 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXSZ nidx=null]
Ninella
 - Ninella Malakhova, 1975 [PROVISIONALLY_ACCEPTED GENUS 9910:87GW7 nidx=null]
 + Ninella Gray, 1850 [SYNONYM GENUS 9911:BFDS5 nidx=null parent=7P7Z7]
Nodilirata
 - Nodilirata [ACCEPTED GENUS 9910:9H9CW nidx=null]
 + Nodilirata Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7P9WQ nidx=null]
Nodosarchaediscus subgen. Neoarchaediscus
 - Nodosarchaediscus subgen. Neoarchaediscus [ACCEPTED SUBGENUS 9910:B922Q nidx=null]
 + Nodosarchaediscus subgen. Neoarchaediscus Browne, 1977 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCWG nidx=null]
 + Nodosarchaediscus subgen. Neoarchaediscus Browne, 1977 [SYNONYM SUBGENUS 9911:BFCWH nidx=null parent=7ZVWF]
Nodosaria subgen. Dentalina
 - Nodosaria subgen. Dentalina [ACCEPTED SUBGENUS 9910:4384 nidx=null]
 + Nodosaria subgen. Dentalina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3K9 nidx=null]
 + Nodosaria subgen. Dentalina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF3KB nidx=null parent=7NVRJ]
Nodosaria subgen. Glandulina
 - Nodosaria subgen. Glandulina [ACCEPTED SUBGENUS 9910:4NRT nidx=null]
 + Nodosaria subgen. Glandulina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF6XM nidx=null parent=7P3PK]
 + Nodosaria subgen. Glandulina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6XN nidx=null]
Nodosaria subgen. Nodosaria
 - Nodosaria subgen. Nodosaria [ACCEPTED SUBGENUS 9910:64MP nidx=null]
 + Nodosaria subgen. Nodosaria Lamarck, 1816 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7F7 nidx=null]
 + Nodosaria subgen. Nodosaria Lamarck, 1816 [SYNONYM SUBGENUS 9911:BF7F8 nidx=null parent=7PMJX]
Nodulinella
 - Nodulinella [ACCEPTED GENUS 9910:64NB nidx=null]
 + Nodulinella Rhumbler, 1949 [PROVISIONALLY_ACCEPTED GENUS 9911:BFDXQ nidx=null]
Notiodrilus philippii
 - Notiodrilus philippii Michaelsen, 1900 [ACCEPTED SPECIES 9910:8T678 nidx=null]
 + Notiodrilus philippii Michaelsen, 1899 [ACCEPTED SPECIES 9911:BH69G nidx=null]
Notomastus (Clistomastus)
 - Notomastus (Clistomastus) [ACCEPTED SUBGENUS 9910:B945J nidx=null]
 + Notomastus (Clistomastus) Eisig, 1887 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJDM nidx=null]
 + Notomastus (Clistomastus) Eisig, 1887 [SYNONYM SUBGENUS 9911:BFJDN nidx=null parent=84R43]
Nudobrissus
 - Nudobrissus [ACCEPTED GENUS 9910:63FZ6 nidx=null]
 + Nudobrissus Lambert, 1920 [PROVISIONALLY_ACCEPTED GENUS 9911:BFF8M nidx=null]
Nummulites striatus
 - Nummulites striatus (Bruguière, 1792) [ACCEPTED SPECIES 9910:834DS nidx=null]
 + Nummulites striatus (Bruguière, 1792) [ACCEPTED SPECIES 9911:BH6FF nidx=null]
Nummulites subgen. Assilina
 - Nummulites subgen. Assilina [ACCEPTED SUBGENUS 9910:347Z nidx=null]
 + Nummulites subgen. Assilina Reuss, 1862 [SYNONYM SUBGENUS 9911:BFJ9C nidx=null parent=9H7SM]
 + Nummulites subgen. Assilina Reuss, 1862 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ9D nidx=null]
Nummulites subgen. Bruguieria
 - Nummulites subgen. Bruguieria [ACCEPTED SUBGENUS 9910:B944Y nidx=null]
 + Nummulites subgen. Bruguieria Prever, 1905 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJBR nidx=null]
 + Nummulites subgen. Bruguieria Prever, 1905 [SYNONYM SUBGENUS 9911:BFJBS nidx=null parent=7PQKD]
Nummulites subgen. Laharpeia
 - Nummulites subgen. Laharpeia [ACCEPTED SUBGENUS 9910:B9487 nidx=null]
 + Nummulites subgen. Laharpeia Prever, 1904 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJQ4 nidx=null]
 + Nummulites subgen. Laharpeia Prever, 1904 [SYNONYM SUBGENUS 9911:BFJQ5 nidx=null parent=7PQKD]
Nummulites subgen. Nummulites
 - Nummulites subgen. Nummulites [ACCEPTED SUBGENUS 9910:65VT nidx=null]
 + Nummulites subgen. Nummulites Lamarck, 1801 [SYNONYM SUBGENUS 9911:BF7GF nidx=null parent=7PQKD]
 + Nummulites subgen. Nummulites Lamarck, 1801 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7GG nidx=null]
Nummulites subgen. Operculinoides
 - Nummulites subgen. Operculinoides [ACCEPTED SUBGENUS 9910:7ZW2L nidx=null]
 + Nummulites subgen. Operculinoides Cizancourt, 1948 [SYNONYM SUBGENUS 9911:BFJV5 nidx=null parent=7PQKD]
 + Nummulites subgen. Operculinoides Cizancourt, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJV6 nidx=null]
Nummulites subgen. Paronaea
 - Nummulites subgen. Paronaea [ACCEPTED SUBGENUS 9910:7ZW94 nidx=null]
 + Nummulites subgen. Paronaea Prever, 1903 [SYNONYM SUBGENUS 9911:BFJWD nidx=null parent=7PQKD]
 + Nummulites subgen. Paronaea Prever, 1903 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJWF nidx=null]
Nygolaimus (Aquatides)
 - Nygolaimus (Aquatides) [ACCEPTED SUBGENUS 9910:8K2YD nidx=null]
 + Nygolaimus (Aquatides) Heyns, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZRP nidx=null]
 + Nygolaimus (Aquatides) Heyns, 1968 [SYNONYM SUBGENUS 9911:BDZRQ nidx=null parent=8FVF3]
Ommatoplea
 - Ommatoplea [ACCEPTED GENUS 9910:7PN7Q nidx=null]
 + Ommatoplea Diesing, 1862 [PROVISIONALLY_ACCEPTED GENUS 9911:BFF9M nidx=null]
Omocestus (Omocestus)
 - Omocestus (Omocestus) Bolívar, 1878 [ACCEPTED SUBGENUS 9910:8PW3M nidx=null]
 + Omocestus (Omocestus) Bolívar, 1878 [ACCEPTED SUBGENUS 9911:BDXMK nidx=null]
Oncaea
 - Oncaea Philippi, 1843 [PROVISIONALLY_ACCEPTED GENUS 9910:B8VNR nidx=null]
 + Oncaea Gistel, 1848 [SYNONYM GENUS 9911:BDVRX nidx=null parent=7NMQS]
Oncopeltus (Oncopeltus)
 - Oncopeltus (Oncopeltus) Stal, 1868 [ACCEPTED SUBGENUS 9910:B6RJB nidx=null]
 + Oncopeltus (Oncopeltus) Stal, 1868 [ACCEPTED SUBGENUS 9911:BF7KN nidx=null]
Oniscus nodulosus
 - Oniscus nodulosus Verhoeff, 1934 [SYNONYM SPECIES 9910:49K7M nidx=null parent=49K6K]
 + Oniscus nodulosus Verhoeff, 1908 [SYNONYM SPECIES 9911:BH6PP nidx=null parent=49K6K]
Ophiosema
 - Ophiosema [ACCEPTED GENUS 9910:8YRS3 nidx=null]
 + Ophiosema Oepik, 1968 [PROVISIONALLY_ACCEPTED GENUS 9911:BF7LF nidx=null]
Ophiura ciliata
 - Ophiura ciliata (Bruzelius in Retzius, 1783) non (O.F.Müller, 1776) [SYNONYM SPECIES 9910:6SPFM nidx=null parent=74PFS]
 + Ophiura ciliata (Retzius, 1783) [SYNONYM SPECIES 9911:BF9GR nidx=null parent=74PFS]
Opissaster (Ditremaster)
 - Opissaster (Ditremaster) [ACCEPTED SUBGENUS 9910:474Z nidx=null]
 + Opissaster (Ditremaster) Munier-Chalmas, 1885 [SYNONYM SUBGENUS 9911:BF5QT nidx=null parent=7PBXF]
 + Opissaster (Ditremaster) Munier-Chalmas, 1885 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5QV nidx=null]
Orbignyna subgen. Ataxoorbignyna
 - Orbignyna subgen. Ataxoorbignyna [ACCEPTED SUBGENUS 9910:7ZT48 nidx=null]
 + Orbignyna subgen. Ataxoorbignyna Voloshina, 1965 [SYNONYM SUBGENUS 9911:BF33J nidx=null parent=7ZT49]
 + Orbignyna subgen. Ataxoorbignyna Voloshina, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF33K nidx=null]
Orbignyna subgen. Orbignyna
 - Orbignyna subgen. Orbignyna [ACCEPTED SUBGENUS 9910:9WNBB nidx=null]
 + Orbignyna subgen. Orbignyna von Hagenow, 1842 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFHY nidx=null]
 + Orbignyna subgen. Orbignyna von Hagenow, 1842 [SYNONYM SUBGENUS 9911:BFFHZ nidx=null parent=7ZW2T]
Orbitoides apiculatus
 - Orbitoides apiculatus Schlumberger, 1902 [SYNONYM SPECIES 9910:B4DQ2 nidx=null parent=8357Z]
 + Orbitoides apiculatus Schlumberger, 1902 [SYNONYM SPECIES 9911:BH6TM nidx=null parent=8357Z]
Orbitoides subgen. Asterocyclina
 - Orbitoides subgen. Asterocyclina [ACCEPTED SUBGENUS 9910:B8XP5 nidx=null]
 + Orbitoides subgen. Asterocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BF325 nidx=null parent=7ZST8]
 + Orbitoides subgen. Asterocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF326 nidx=null]
Orbitoides subgen. Discocyclina
 - Orbitoides subgen. Discocyclina [ACCEPTED SUBGENUS 9910:B8YF7 nidx=null]
 + Orbitoides subgen. Discocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5P9 nidx=null]
 + Orbitoides subgen. Discocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BF5PC nidx=null parent=7ZTXB]
Orbitoides subgen. Exagonocyclina
 - Orbitoides subgen. Exagonocyclina [ACCEPTED SUBGENUS 9910:B946Y nidx=null]
 + Orbitoides subgen. Exagonocyclina Checchia-Rispoli, 1907 [SYNONYM SUBGENUS 9911:BFJK9 nidx=null parent=7ZW2Y]
 + Orbitoides subgen. Exagonocyclina Checchia-Rispoli, 1907 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJKB nidx=null]
Orbitoides subgen. Lepidocyclina
 - Orbitoides subgen. Lepidocyclina [ACCEPTED SUBGENUS 9910:B8Z9W nidx=null]
 + Orbitoides subgen. Lepidocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF993 nidx=null]
 + Orbitoides subgen. Lepidocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BF995 nidx=null parent=7ZVNG]
Orbitoides subgen. Orbitoides
 - Orbitoides subgen. Orbitoides [ACCEPTED SUBGENUS 9910:7ZW33 nidx=null]
 + Orbitoides subgen. Orbitoides Douvillé, 1899 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFJ7 nidx=null]
 + Orbitoides subgen. Orbitoides Douvillé, 1899 [SYNONYM SUBGENUS 9911:BFFJ8 nidx=null parent=7ZW34]
Orbitoides subgen. Orthophragmina
 - Orbitoides subgen. Orthophragmina [ACCEPTED SUBGENUS 9910:7ZW48 nidx=null]
 + Orbitoides subgen. Orthophragmina Checchia-Rispoli, 1907 [SYNONYM SUBGENUS 9911:BFFM6 nidx=null parent=7ZTXB]
 + Orbitoides subgen. Orthophragmina Checchia-Rispoli, 1907 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFM7 nidx=null]
Orbitoides subgen. Rhipidocyclina
 - Orbitoides subgen. Rhipidocyclina [ACCEPTED SUBGENUS 9910:B94CJ nidx=null]
 + Orbitoides subgen. Rhipidocyclina Gümbel, 1870 [SYNONYM SUBGENUS 9911:BFK2F nidx=null parent=7ZW2Y]
 + Orbitoides subgen. Rhipidocyclina Gümbel, 1870 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK2G nidx=null]
Orbitolina subgen. Columnorbitolina
 - Orbitolina subgen. Columnorbitolina [ACCEPTED SUBGENUS 9910:B945L nidx=null]
 + Orbitolina subgen. Columnorbitolina B.G. Zhang, 1982 [SYNONYM SUBGENUS 9911:BFJF4 nidx=null parent=7ZVS3]
 + Orbitolina subgen. Columnorbitolina B.G. Zhang, 1982 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJF5 nidx=null]
Orbitolina subgen. Conicorbitolina
 - Orbitolina subgen. Conicorbitolina [ACCEPTED SUBGENUS 9910:7ZTQP nidx=null]
 + Orbitolina subgen. Conicorbitolina Schroeder, 1973 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4T4 nidx=null]
 + Orbitolina subgen. Conicorbitolina Schroeder, 1973 [SYNONYM SUBGENUS 9911:BF4T5 nidx=null parent=7ZTQQ]
Orbitolina subgen. Eorbitolina
 - Orbitolina subgen. Eorbitolina [ACCEPTED SUBGENUS 9910:B946Q nidx=null]
 + Orbitolina subgen. Eorbitolina B.G. Zhang, 1982 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJJW nidx=null]
 + Orbitolina subgen. Eorbitolina B.G. Zhang, 1982 [SYNONYM SUBGENUS 9911:BFJJX nidx=null parent=7ZTWY]
Orbitolina subgen. Mesorbitolina
 - Orbitolina subgen. Mesorbitolina [ACCEPTED SUBGENUS 9910:7ZVS2 nidx=null]
 + Orbitolina subgen. Mesorbitolina Schroeder, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFC8J nidx=null]
 + Orbitolina subgen. Mesorbitolina Schroeder, 1962 [SYNONYM SUBGENUS 9911:BFC8K nidx=null parent=7ZVS3]
Orbitolina subgen. Orbitolina
 - Orbitolina subgen. Orbitolina [ACCEPTED SUBGENUS 9910:7ZW36 nidx=null]
 + Orbitolina subgen. Orbitolina d'Orbigny, 1850 [SYNONYM SUBGENUS 9911:BFFJ9 nidx=null parent=7ZW37]
 + Orbitolina subgen. Orbitolina d'Orbigny, 1850 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFJB nidx=null]
Orbitolina subgen. Palorbitolina
 - Orbitolina subgen. Palorbitolina [ACCEPTED SUBGENUS 9910:7ZW63 nidx=null]
 + Orbitolina subgen. Palorbitolina Schroeder, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFWZ nidx=null]
 + Orbitolina subgen. Palorbitolina Schroeder, 1963 [SYNONYM SUBGENUS 9911:BFFX2 nidx=null parent=7ZW64]
Orthophragmina
 - Orthophragmina [ACCEPTED GENUS 9910:7ZW49 nidx=null]
 + Orthophragmina Munier-Chalmas, 1891 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFM4 nidx=null]
 + Orthophragmina Munier-Chalmas, 1891 [SYNONYM GENUS 9911:BFFM5 nidx=null parent=7ZTXB]
Orthophragmina subgen. Asteriacites
 - Orthophragmina subgen. Asteriacites [ACCEPTED SUBGENUS 9910:B944J nidx=null]
 + Orthophragmina subgen. Asteriacites Berry, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ9H nidx=null]
 + Orthophragmina subgen. Asteriacites Berry, 1929 [SYNONYM SUBGENUS 9911:BFJ9J nidx=null parent=7ZTXB]
Orthophragmina subgen. Discocyclina
 - Orthophragmina subgen. Discocyclina [ACCEPTED SUBGENUS 9910:B8YF6 nidx=null]
 + Orthophragmina subgen. Discocyclina Heim, 1908 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5PF nidx=null]
 + Orthophragmina subgen. Discocyclina Heim, 1908 [SYNONYM SUBGENUS 9911:BF5PG nidx=null parent=7ZTXB]
Orthostomum
 - Orthostomum [ACCEPTED GENUS 9910:63GWT nidx=null]
 + Orthostomum Ehrenberg, 1831 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFML nidx=null]
Ovulechinus (Pseudovulechinus)
 - Ovulechinus (Pseudovulechinus) [ACCEPTED SUBGENUS 9910:B94BR nidx=null]
 + Ovulechinus (Pseudovulechinus) Szöreńyi, 1955 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJZG nidx=null]
 + Ovulechinus (Pseudovulechinus) Szöreńyi, 1955 [SYNONYM SUBGENUS 9911:BFJZH nidx=null parent=7PKWH]
Pachysphaerina
 - Pachysphaerina Conil & Lys, 1968 [PROVISIONALLY_ACCEPTED GENUS 9910:87JN8 nidx=null]
 + Pachysphaerina Conil & Lys, 1968 [ACCEPTED GENUS 9911:BFFSY nidx=null]
Paijenborchella (Neomonoceratina)
 - Paijenborchella (Neomonoceratina) [ACCEPTED SUBGENUS 9910:6226 nidx=null]
 + Paijenborchella (Neomonoceratina) Kingma, 1948 [SYNONYM SUBGENUS 9911:BF7BC nidx=null parent=84QVD]
 + Paijenborchella (Neomonoceratina) Kingma, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7BD nidx=null]
Palaeocopa
 - Palaeocopa [ACCEPTED SUBORDER 9910:9XCRR nidx=null]
 + Palaeocopa Henningsmoen, 1953 [PROVISIONALLY_ACCEPTED SUBORDER 9911:BDYMG nidx=null]
 + Palaeocopa Henningsmoen, 1953 [SYNONYM SUBORDER 9911:BDYMH nidx=null parent=857WB]
Palaeodendrocoelum
 - Palaeodendrocoelum [ACCEPTED GENUS 9910:6CFN nidx=null]
 + Palaeodendrocoelum Codreanu, 1949 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFCT nidx=null]
Palaeofusulina subgen. Paradunbarula
 - Palaeofusulina subgen. Paradunbarula [ACCEPTED SUBGENUS 9910:7ZW6Y nidx=null]
 + Palaeofusulina subgen. Paradunbarula Skinner in Leven & Okay, 1996 [SYNONYM SUBGENUS 9911:BFG52 nidx=null parent=7ZW6Z]
 + Palaeofusulina subgen. Paradunbarula Skinner in Leven & Okay, 1996 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG53 nidx=null]
Paleoechinoneus
 - Paleoechinoneus [ACCEPTED GENUS 9910:6CND nidx=null]
 + Paleoechinoneus Grant & Hertlein, 1938 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFW9 nidx=null]
Paleopneustes (Oopneustes)
 - Paleopneustes (Oopneustes) [ACCEPTED SUBGENUS 9910:B949D nidx=null]
 + Paleopneustes (Oopneustes) Nisiyama, 1968 [SYNONYM SUBGENUS 9911:BFJTZ nidx=null parent=7PNP2]
 + Paleopneustes (Oopneustes) Nisiyama, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJV2 nidx=null]
Palmerius
 - Palmerius [ACCEPTED GENUS 9910:63JC3 nidx=null]
 + Palmerius Cutress, 1980 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFWP nidx=null]
Pamirina subgen. Pamirina
 - Pamirina subgen. Pamirina [ACCEPTED SUBGENUS 9910:7ZW66 nidx=null]
 + Pamirina subgen. Pamirina Leven, 1970 in Huang & Zeng, 1984 [SYNONYM SUBGENUS 9911:BFFXD nidx=null parent=7ZW67]
 + Pamirina subgen. Pamirina Leven, 1970 in Huang & Zeng, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFXF nidx=null]
Pantellaria monstruosa
 - Pantellaria monstruosa (Sacchi, 1836) [SYNONYM SPECIES 9910:BDCTL nidx=null parent=3YZZ4]
 + Pantellaria monstruosa (Sacchi, 1833) [SYNONYM SPECIES 9911:BHQGJ nidx=null parent=3YZZ4]
Papilio alexis
 - Papilio alexis (Scopoli, 1763 nec Hufnagel, 1766) [MISAPPLIED SPECIES 9910:9DGQD nidx=null parent=72NQG]
 + Papilio alexis Scopoli, 1763 [SYNONYM SPECIES 9911:BH846 nidx=null parent=B3GZ]
 + Papilio alexis (Scopoli, 1763 nec Hufnagel, 1766) [MISAPPLIED SPECIES 9911:BH847 nidx=null parent=72NQG]
Papilio amyntas
 - Papilio amyntas [Denis & Schiffermüller], 1775 [AMBIGUOUS_SYNONYM SPECIES 9910:4CK3G nidx=null parent=6F5BL]
 + Papilio amyntas [Denis & Schiffermüller], 1775 [AMBIGUOUS_SYNONYM SPECIES 9911:BH848 nidx=null parent=6F5BL]
 + Papilio amyntas Fabricius, 1775 [AMBIGUOUS_SYNONYM SPECIES 9911:BH849 nidx=null parent=6F5BL]
Paradainella subgen. Neoparadainella
 - Paradainella subgen. Neoparadainella [ACCEPTED SUBGENUS 9910:7ZVXJ nidx=null]
 + Paradainella subgen. Neoparadainella Vdovenko, 1973 [SYNONYM SUBGENUS 9911:BFD7J nidx=null parent=7ZVXK]
 + Paradainella subgen. Neoparadainella Vdovenko, 1973 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFD7K nidx=null]
Paradasygyius rodriguezi
 - Paradasygyius rodriguezi Lima, Aguilera & Tavares, 2022 [ACCEPTED SPECIES 9910:BDCV2 nidx=null]
 + Paradasygyius rodriguezi Lima, Aguilera & Tavares, 2021 [ACCEPTED SPECIES 9911:BHQH4 nidx=null]
Parafusulina subgen. Parafusulina
 - Parafusulina subgen. Parafusulina [ACCEPTED SUBGENUS 9910:7ZW76 nidx=null]
 + Parafusulina subgen. Parafusulina Dunbar & Skinner, 1931 [SYNONYM SUBGENUS 9911:BFG5F nidx=null parent=7ZW77]
 + Parafusulina subgen. Parafusulina Dunbar & Skinner, 1931 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG5G nidx=null]
Parafusulina subgen. Skinnerella
 - Parafusulina subgen. Skinnerella [ACCEPTED SUBGENUS 9910:7ZX2W nidx=null]
 + Parafusulina subgen. Skinnerella Coogan, 1960 [SYNONYM SUBGENUS 9911:BFHKK nidx=null parent=7ZX2X]
 + Parafusulina subgen. Skinnerella Coogan, 1960 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHKL nidx=null]
Paraharmotrema
 - Paraharmotrema [ACCEPTED GENUS 9910:8VHRZ nidx=null]
 + Paraharmotrema Dutton & Bullard in Dutton, Du Preez, Urabe & Bullard, 2021 [PROVISIONALLY_ACCEPTED GENUS 9911:BFG5P nidx=null]
Parahemiaster
 - Parahemiaster [ACCEPTED GENUS 9910:63K6J nidx=null]
 + Parahemiaster Egorov, 1972 [PROVISIONALLY_ACCEPTED GENUS 9911:BFG5T nidx=null]
Paraidya
 - Paraidya Huys, 2009 [PROVISIONALLY_ACCEPTED GENUS 9910:87JC2 nidx=null]
 + Paraidya Sewell, 1940 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFFM nidx=null]
 + Paraidya Sewell, 1940 [SYNONYM GENUS 9911:BFFFN nidx=null parent=7PPNH]
Paralongidorus (Paralongidorus)
 - Paralongidorus (Paralongidorus) [ACCEPTED SUBGENUS 9910:B8W8J nidx=null]
 + Paralongidorus (Paralongidorus) Siddiqi, Hooper & Khan, 1963 [ACCEPTED SUBGENUS 9911:BDXQ9 nidx=null]
Paramphithoe bicuspis
 - Paramphithoe bicuspis (Sars, 1893) [SYNONYM SPECIES 9910:4D42C nidx=null parent=4D948]
 + Paramphithoe bicuspis (Krøyer, 1838) [SYNONYM SPECIES 9911:BH7KQ nidx=null parent=4D948]
Paramphithoe pulchella
 - Paramphithoe pulchella R.M. Bruzelius, 1859 [SYNONYM SPECIES 9910:4D42W nidx=null parent=46QQY]
 + Paramphithoe pulchella (Krøyer, 1846) [SYNONYM SPECIES 9911:BH7KR nidx=null parent=46QQY]
Paraonis (Paradoneis)
 - Paraonis (Paradoneis) [ACCEPTED SUBGENUS 9910:63KFF nidx=null]
 + Paraonis (Paradoneis) Hartman, 1965 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7TF nidx=null]
 + Paraonis (Paradoneis) Hartman, 1965 [SYNONYM SUBGENUS 9911:BF7TG nidx=null parent=84RM3]
Paraonis (Paraonides)
 - Paraonis (Paraonides) [ACCEPTED SUBGENUS 9910:6FZ5 nidx=null]
 + Paraonis (Paraonides) Cerruti, 1909 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFGT nidx=null]
 + Paraonis (Paraonides) Cerruti, 1909 [SYNONYM SUBGENUS 9911:BFFGV nidx=null parent=84RPT]
Paraschwagerina subgen. Acervoschwagerina
 - Paraschwagerina subgen. Acervoschwagerina [ACCEPTED SUBGENUS 9910:7ZLDB nidx=null]
 + Paraschwagerina subgen. Acervoschwagerina Hanzawa, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZBW nidx=null]
 + Paraschwagerina subgen. Acervoschwagerina Hanzawa, 1949 [SYNONYM SUBGENUS 9911:BDZBX nidx=null parent=7ZLDC]
Paraschwagerina subgen. Changmeia
 - Paraschwagerina subgen. Changmeia [ACCEPTED SUBGENUS 9910:7ZTMT nidx=null]
 + Paraschwagerina subgen. Changmeia Zhou & Luo Hui, 1998 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4DC nidx=null]
 + Paraschwagerina subgen. Changmeia Zhou & Luo Hui, 1998 [SYNONYM SUBGENUS 9911:BF4DD nidx=null parent=7ZTMV]
Paraschwagerina subgen. Klamathina
 - Paraschwagerina subgen. Klamathina [ACCEPTED SUBGENUS 9910:7ZVKQ nidx=null]
 + Paraschwagerina subgen. Klamathina Skinner & Wilde, 1965 in Huang & Zeng, 1984 [SYNONYM SUBGENUS 9911:BF8Q5 nidx=null parent=7ZVKR]
 + Paraschwagerina subgen. Klamathina Skinner & Wilde, 1965 in Huang & Zeng, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8Q6 nidx=null]
Parastaffella subgen. Eoparastaffella
 - Parastaffella subgen. Eoparastaffella [ACCEPTED SUBGENUS 9910:7ZV38 nidx=null]
 + Parastaffella subgen. Eoparastaffella Vdovenko, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6C6 nidx=null]
 + Parastaffella subgen. Eoparastaffella Vdovenko, 1954 [SYNONYM SUBGENUS 9911:BF6C7 nidx=null parent=7ZV39]
Parastaffella subgen. Parastaffelloides
 - Parastaffella subgen. Parastaffelloides [ACCEPTED SUBGENUS 9910:7ZW88 nidx=null]
 + Parastaffella subgen. Parastaffelloides Reitlinger, 1963 [SYNONYM SUBGENUS 9911:BFGCK nidx=null parent=7ZW89]
 + Parastaffella subgen. Parastaffelloides Reitlinger, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGCL nidx=null]
Paratrochammina subgen. Lepidoparatrochammina
 - Paratrochammina subgen. Lepidoparatrochammina [ACCEPTED SUBGENUS 9910:5CJM nidx=null]
 + Paratrochammina subgen. Lepidoparatrochammina Brönnimann & Whittaker, 1986 [SYNONYM SUBGENUS 9911:BF5W6 nidx=null parent=7PMM7]
 + Paratrochammina subgen. Lepidoparatrochammina Brönnimann & Whittaker, 1986 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5W7 nidx=null]
Parmacella kainarensis
 - Parmacella kainarensis Simroth, 1912 [SYNONYM SPECIES 9910:7SMCQ nidx=null parent=QKST]
 + Parmacella kainarensis Simroth, 1913 [SYNONYM SPECIES 9911:BH7RJ nidx=null parent=QKST]
Partulina montagui
 - Partulina montagui Pisbry, 1913 [ACCEPTED SPECIES 9910:86WMK nidx=null]
 + Partulina montagui Pilsbry, 1913 [ACCEPTED SPECIES 9911:BFRK7 nidx=null]
Pecten (Grandipecten) tournali
 - Pecten (Grandipecten) tournali Serres, 1829 [SYNONYM SPECIES 9910:B6HJX nidx=null parent=B6F68]
 + Pecten (Grandipecten) tournali [sic] [SYNONYM SPECIES 9911:BHS67 nidx=null parent=B6F68]
Pecten acuticosta
 - Pecten acuticosta Lamarck, 1809 [SYNONYM SPECIES 9910:BDMBF nidx=null parent=7SVGK]
 + Pecten acuticosta F. A. Roemer, 1836 [SYNONYM SPECIES 9911:BHS5X nidx=null parent=7SVGK]
 + Pecten acuticosta Lamarck, 1819 [SYNONYM SPECIES 9911:BHS5Y nidx=null parent=7SVGK]
Pecten aequatus
 - Pecten aequatus Quenstedt, 1858 [SYNONYM SPECIES 9910:B6HT9 nidx=null parent=B6HVL]
 + Pecten aequatus Quenstedt, 1857 [SYNONYM SPECIES 9911:BHS6Q nidx=null parent=B6HVL]
Pecten bavoux
 - Pecten bavoux Contejean, 1859 [SYNONYM SPECIES 9910:B6J3N nidx=null parent=B6HSH]
 + Pecten bavoux Contejean, 1860 [SYNONYM SPECIES 9911:BHS6V nidx=null parent=B6HSH]
Pecten benedicti
 - Pecten benedicti Contejean, 1859 [SYNONYM SPECIES 9910:B4FRC nidx=null parent=B6G3W]
 + Pecten benedicti Contejean, 1860 [SYNONYM SPECIES 9911:BH7XG nidx=null parent=5Y94J]
Pecten billoti
 - Pecten billoti Contejean, 1859 [SYNONYM SPECIES 9910:B6FQV nidx=null parent=B6G3W]
 + Pecten billoti Contejean, 1860 [SYNONYM SPECIES 9911:BHS43 nidx=null parent=5Y94J]
Pecten demissus
 - Pecten demissus (Solander, 1797) [SYNONYM SPECIES 9910:B5BMN nidx=null parent=69X4D]
 + Pecten demissus J. Phillips, 1829 [SYNONYM SPECIES 9911:BHQHW nidx=null parent=BHNKD]
Pecten dufrenoyi
 - Pecten dufrenoyi A. d'Orbigny, 1842 [SYNONYM SPECIES 9910:B6BVJ nidx=null parent=B5GSP]
 + Pecten dufrenoyi A. d'Orbigny, 1843 [SYNONYM SPECIES 9911:BHRGG nidx=null parent=B5GSP]
Pecten flamandi
 - Pecten flamandi Contejean, 1859 [SYNONYM SPECIES 9910:B6FGX nidx=null parent=B6DYJ]
 + Pecten flamandi Contejean, 1860 [SYNONYM SPECIES 9911:BHS3M nidx=null parent=B6DYJ]
Pecten flavus
 - Pecten flavus Dubois, 1831 [SYNONYM SPECIES 9910:B6HK2 nidx=null parent=B4J23]
 + Pecten flavus Du Bois de Montpéreux, 1831 [SYNONYM SPECIES 9911:BHS68 nidx=null parent=B4J23]
Pecten grenieri
 - Pecten grenieri Contejean, 1859 [SYNONYM SPECIES 9910:B6HNF nidx=null parent=B6HJ4]
 + Pecten grenieri Contejean, 1860 [SYNONYM SPECIES 9911:BHS6H nidx=null parent=B6HJ4]
Pecten inaequicostatus
 - Pecten inaequicostatus Phillips, 1829 [AMBIGUOUS_SYNONYM SPECIES 9910:B5BQ6 nidx=null parent=B6GZB]
 + Pecten inaequicostatus [sic] [SYNONYM SPECIES 9911:BHQJ9 nidx=null parent=B6GZB]
Pecten inserens
 - Pecten inserens Gneitz, 1872 [SYNONYM SPECIES 9910:B6D8M nidx=null parent=B6GD5]
 + Pecten inserens Geinitz, 1872 [SYNONYM SPECIES 9911:BHS27 nidx=null parent=BHQBK]
Pecten magnificus
 - Pecten magnificus Gabb, 1873 [AMBIGUOUS_SYNONYM SPECIES 9910:B4FSM nidx=null parent=47L83]
 + Pecten magnificus Michelotti, 1839 [SYNONYM SPECIES 9911:BH7YD nidx=null parent=B6FTP]
Pecten monsbeliardensis
 - Pecten monsbeliardensis Contejean, 1859 [SYNONYM SPECIES 9910:B6DMJ nidx=null parent=B5FBP]
 + Pecten monsbeliardensis Contejean, 1860 [SYNONYM SPECIES 9911:BHS2G nidx=null parent=B5FBP]
Pecten nodosiformis
 - Pecten nodosiformis Serres, 1837 [SYNONYM SPECIES 9910:B6JMZ nidx=null parent=B6FP2]
 + Pecten nodosiformis Pusch, 1837 [SYNONYM SPECIES 9911:BHS79 nidx=null parent=BHS3Z]
Pecten parisoti
 - Pecten parisoti Contejean, 1859 [SYNONYM SPECIES 9910:B6G56 nidx=null parent=B6F7B]
 + Pecten parisoti Contejean, 1860 [SYNONYM SPECIES 9911:BHS4M nidx=null parent=B6F7B]
Pecten roncobelloi
 - Pecten roncobelloi Tomassi, 1913 [SYNONYM SPECIES 9910:B6HKZ nidx=null parent=B6GVL]
 + Pecten roncobelloi Tommasi, 1913 [SYNONYM SPECIES 9911:BHS6F nidx=null parent=BHTGZ]
Pecten seguenzae
 - Pecten seguenzae Di Stefano, 1886 [SYNONYM SPECIES 9910:B6DK8 nidx=null parent=B6G25]
 + Pecten seguenzae Di Stefano, 1887 [SYNONYM SPECIES 9911:BHS2D nidx=null parent=B6G25]
Pecten thurmanni
 - Pecten thurmanni Contejean, 1859 [SYNONYM SPECIES 9910:B6DWZ nidx=null parent=B5DBS]
 + Pecten thurmanni Contejean, 1860 [SYNONYM SPECIES 9911:BHS2V nidx=null parent=B5DBS]
Pecten tuberculosus gingensis
 - Pecten tuberculosus gingensis Quenstedt, 1856 [SYNONYM SUBSPECIES 9910:B6HKJ nidx=null parent=B6F7B]
 + Pecten tuberculosus gingensis Quenstedt, 1857 [SYNONYM SUBSPECIES 9911:BHS6B nidx=null parent=B6F7B]
Pedinopsis (Pedinopsis)
 - Pedinopsis (Pedinopsis) [ACCEPTED SUBGENUS 9910:6JZW nidx=null]
 + Pedinopsis (Pedinopsis) Cotteau, 1863 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGHT nidx=null]
 + Pedinopsis (Pedinopsis) Cotteau, 1863 [SYNONYM SUBGENUS 9911:BFGHV nidx=null parent=7PSTL]
Pelagodiscus atlantica
 - Pelagodiscus atlantica Hatai, 1936 [SYNONYM SPECIES 9910:88X3D nidx=null parent=6TXP5]
 + Pelagodiscus atlantica (King, 1868) [SYNONYM SPECIES 9911:BDW3D nidx=null parent=6TXP5]
Pemphigus (Pemphigus) niishimae
 - Pemphigus (Pemphigus) niishimae [ACCEPTED SPECIES 9910:B8GH6 nidx=null]
 + Pemphigus (Pemphigus) niishimae [ACCEPTED SPECIES 9911:BH8LZ nidx=null]
Peneroplis subgen. Peneroplis
 - Peneroplis subgen. Peneroplis [ACCEPTED SUBGENUS 9910:6KM2 nidx=null]
 + Peneroplis subgen. Peneroplis d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7Z8 nidx=null]
 + Peneroplis subgen. Peneroplis d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BF7Z9 nidx=null parent=7PQPX]
Penestragania (Penestragania)
 - Penestragania (Penestragania) Beamer & Lawson, 1945 [ACCEPTED SUBGENUS 9910:B8Z46 nidx=null]
 + Penestragania (Penestragania) Beamer & Lawson, 1945 [ACCEPTED SUBGENUS 9911:BF7ZB nidx=null]
Pentasyderina
 - Pentasyderina [ACCEPTED GENUS 9910:7ZWB5 nidx=null]
 + Pentasyderina Nicolucci, 1846 [PROVISIONALLY_ACCEPTED GENUS 9911:BFGKQ nidx=null]
Pericosmus (Pericosmus)
 - Pericosmus (Pericosmus) [ACCEPTED SUBGENUS 9910:6L89 nidx=null]
 + Pericosmus (Pericosmus) L. Agassiz in L. Agassiz & Desor, 1847 [SYNONYM SUBGENUS 9911:BDVSQ nidx=null parent=7NKDJ]
 + Pericosmus (Pericosmus) L. Agassiz in L. Agassiz & Desor, 1847 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVSR nidx=null]
Perigonimus repens
 - Perigonimus repens Allman [SYNONYM SPECIES 9910:775PX nidx=null parent=723RK]
 + Perigonimus repens (Wright, 1858) [SYNONYM SPECIES 9911:BDXZ9 nidx=null parent=723RK]
Petalobrissus (Echinobrissus)
 - Petalobrissus (Echinobrissus) [ACCEPTED SUBGENUS 9910:49H2 nidx=null]
 + Petalobrissus (Echinobrissus) Gray, 1825 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJHT nidx=null]
 + Petalobrissus (Echinobrissus) Gray, 1825 [SYNONYM SUBGENUS 9911:BFJHV nidx=null parent=7PQJM]
Petalobrissus (Paralampas)
 - Petalobrissus (Paralampas) [ACCEPTED SUBGENUS 9910:63JXH nidx=null]
 + Petalobrissus (Paralampas) Duncan & Sladen, 1882 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG6D nidx=null]
 + Petalobrissus (Paralampas) Duncan & Sladen, 1882 [SYNONYM SUBGENUS 9911:BFG6H nidx=null parent=7PRXJ]
Phimenes solomonis
 - Phimenes solomonis (Vecht, 1959) [ACCEPTED SPECIES 9910:9XC52 nidx=null]
 + Phimenes solomonis (Vecht, 1959) [ACCEPTED SPECIES 9911:BFN4L nidx=null]
Phoeniciloricus
 - Phoeniciloricus Neves & Kristensen, 2014 [ACCEPTED GENUS 9910:9WKNV nidx=null]
 + Phoeniciloricus Gad, 2004 [ACCEPTED GENUS 9911:BDVSX nidx=null]
Phyllodoce (Eulalia)
 - Phyllodoce (Eulalia) [ACCEPTED SUBGENUS 9910:4FS7 nidx=null]
 + Phyllodoce (Eulalia) Savigny, 1822 [SYNONYM SUBGENUS 9911:BDVYJ nidx=null parent=84NKJ]
 + Phyllodoce (Eulalia) Savigny, 1822 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVYK nidx=null]
Phylloncholaimus
 - Phylloncholaimus Bussau, 1993 [PROVISIONALLY_ACCEPTED GENUS 9910:8K3TF nidx=null]
 + Phylloncholaimus Bussau, 1995 [PROVISIONALLY_ACCEPTED GENUS 9911:BFGRQ nidx=null]
 + Phylloncholaimus Bussau, 1995 [SYNONYM GENUS 9911:BFGRR nidx=null parent=8FZV5]
Physella
 - Physella Haldeman, 1843 [ACCEPTED GENUS 9910:B6LCS nidx=null]
 + Physella Haldeman, 1842 [ACCEPTED GENUS 9911:BDTNS nidx=null]
 + Physella L. Pfeiffer, 1861 [SYNONYM GENUS 9911:BDTNT nidx=null parent=7PHJW]
Pilocamptus
 - Pilocamptus Huys, 2009 [PROVISIONALLY_ACCEPTED GENUS 9910:87JXL nidx=null]
 + Pilocamptus Wells, 2007 [PROVISIONALLY_ACCEPTED GENUS 9911:BFGS3 nidx=null]
 + Pilocamptus Wells, 2007 [SYNONYM GENUS 9911:BFGS4 nidx=null parent=7PTLB]
Piretopsis (Cerninella)
 - Piretopsis (Cerninella) [ACCEPTED SUBGENUS 9910:859V6 nidx=null]
 + Piretopsis (Cerninella) Pribyl, 1966 [SYNONYM SUBGENUS 9911:BF4CC nidx=null parent=859V7]
 + Piretopsis (Cerninella) Pribyl, 1966 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4CD nidx=null]
Pisidium globulare
 - Pisidium globulare Westerlund, 1873 [SYNONYM SPECIES 9910:9KC9L nidx=null parent=9LD8T]
 + Pisidium globulare Clessin, 1873 [SYNONYM SPECIES 9911:7SQCH nidx=null parent=7R8PB]
Placunopsis striatula
 - Placunopsis striatula Zittel, 1865 [ACCEPTED SPECIES 9910:8T6KH nidx=null]
 + Placunopsis striatula (Oppel, 1856) [ACCEPTED SPECIES 9911:BH8T8 nidx=null]
Planktonemertes agassizi
 - Planktonemertes agassizi ? [SYNONYM SPECIES 9910:BC5Y7 nidx=null parent=8549B]
 + Planktonemertes agassizi ? [SYNONYM SPECIES 9911:BH8WZ nidx=null parent=8549B]
Planularia
 - Planularia Defrance, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:B7YS9 nidx=null]
 - Planularia Defrance, 1826 [PROVISIONALLY_ACCEPTED GENUS 9910:B8Z62 nidx=null]
 + Planularia Nilsson, 1826 [SYNONYM GENUS 9911:BF89V nidx=null parent=7ZW62]
Plectogyra subgen. Latiendothyra
 - Plectogyra subgen. Latiendothyra [ACCEPTED SUBGENUS 9910:B948F nidx=null]
 + Plectogyra subgen. Latiendothyra Lipina in Poyarkov, 1963 [SYNONYM SUBGENUS 9911:BFJQC nidx=null parent=7ZVC3]
 + Plectogyra subgen. Latiendothyra Lipina in Poyarkov, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJQF nidx=null]
Pleurotoma capgrandi
 - Pleurotoma capgrandi Tournouër, 1873 [SYNONYM SPECIES 9910:B3FHD nidx=null parent=8YMMM]
 + Pleurotoma capgrandi Tournouër, 1874 [SYNONYM SPECIES 9911:BH99F nidx=null parent=BFTY8]
Pliolampas (Tristomanthus)
 - Pliolampas (Tristomanthus) [ACCEPTED SUBGENUS 9910:82JZ nidx=null]
 + Pliolampas (Tristomanthus) Bittner, 1892 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK5M nidx=null]
 + Pliolampas (Tristomanthus) Bittner, 1892 [SYNONYM SUBGENUS 9911:BFK5N nidx=null parent=7Q36P]
Poecilus quadripunctatus
 - Poecilus quadripunctatus Letzner, 1852 unavailable name [AMBIGUOUS_SYNONYM SPECIES 9910:BC8NW nidx=null parent=8LWRK]
 + Poecilus quadripunctatus (Letzner, 1852) [AMBIGUOUS_SYNONYM SPECIES 9911:BHBLB nidx=null parent=8LWQZ]
 + Poecilus quadripunctatus Letzner, 1852 [AMBIGUOUS_SYNONYM SPECIES 9911:BHBLC nidx=null parent=8LWRK]
Polyamia (Polyamia)
 - Polyamia (Polyamia) DeLong, 1926 [ACCEPTED SUBGENUS 9910:B6RV7 nidx=null]
 + Polyamia (Polyamia) DeLong, 1926 [ACCEPTED SUBGENUS 9911:BF8GG nidx=null]
Polygyra (Linisa) ariadnae
 - Polygyra (Linisa) ariadnae (L. Pfeiffer, 1848) [SYNONYM SPECIES 9910:77TZM nidx=null parent=3V2YV]
 + Polygyra (Linisa) ariadnae (L. Pfeiffer, 1849) [SYNONYM SPECIES 9911:BH9GZ nidx=null parent=BGVHZ]
Polymorphina subgen. Globulina
 - Polymorphina subgen. Globulina [ACCEPTED SUBGENUS 9910:4P3C nidx=null]
 + Polymorphina subgen. Globulina Reuss, 1845 [SYNONYM SUBGENUS 9911:BF6YP nidx=null parent=7P3RY]
 + Polymorphina subgen. Globulina Reuss, 1845 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6YQ nidx=null]
Polymorphina subgen. Globulinen
 - Polymorphina subgen. Globulinen [ACCEPTED SUBGENUS 9910:B947J nidx=null]
 + Polymorphina subgen. Globulinen Roemer, 1838 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJLZ nidx=null]
 + Polymorphina subgen. Globulinen Roemer, 1838 [SYNONYM SUBGENUS 9911:BFJM2 nidx=null parent=7PTKC]
Polymorphina subgen. Guttulina
 - Polymorphina subgen. Guttulina [ACCEPTED SUBGENUS 9910:B8YT7 nidx=null]
 + Polymorphina subgen. Guttulina Reuss, 1845 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF74L nidx=null]
 + Polymorphina subgen. Guttulina Reuss, 1845 [SYNONYM SUBGENUS 9911:BF74M nidx=null parent=7P4W9]
Polymorphina subgen. Polymorphina
 - Polymorphina subgen. Polymorphina [ACCEPTED SUBGENUS 9910:63MXG nidx=null]
 + Polymorphina subgen. Polymorphina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BDVT3 nidx=null parent=7PTKC]
 + Polymorphina subgen. Polymorphina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDVT4 nidx=null]
Polymorphina subgen. Pyrulina
 - Polymorphina subgen. Pyrulina [ACCEPTED SUBGENUS 9910:B8ZBR nidx=null]
 + Polymorphina subgen. Pyrulina Reuss, 1863 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9G2 nidx=null]
 + Polymorphina subgen. Pyrulina Reuss, 1863 [SYNONYM SUBGENUS 9911:BF9G3 nidx=null parent=7PX7K]
Polymorphina subgen. Sigmomorphina
 - Polymorphina subgen. Sigmomorphina [ACCEPTED SUBGENUS 9910:7GT6 nidx=null]
 + Polymorphina subgen. Sigmomorphina Makiyama & Nakagawa, 1941 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG7B nidx=null]
 + Polymorphina subgen. Sigmomorphina Makiyama & Nakagawa, 1941 [SYNONYM SUBGENUS 9911:BFG7C nidx=null parent=7PZPC]
Pontocythere (Hulingsina)
 - Pontocythere (Hulingsina) [ACCEPTED SUBGENUS 9910:4Z6Y nidx=null]
 + Pontocythere (Hulingsina) Puri, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF87V nidx=null]
 + Pontocythere (Hulingsina) Puri, 1958 [SYNONYM SUBGENUS 9911:BF87W nidx=null parent=84QM7]
Poraster indicus
 - Poraster indicus Döderlein, 1916 [SYNONYM SPECIES 9910:4LVXB nidx=null parent=4LVXD]
 + Poraster indicus (Koehler, 1910) [SYNONYM SPECIES 9911:BH9NM nidx=null parent=4LVXD]
Poratia
 - Poratia Cook & Cook, 1894 [PROVISIONALLY_ACCEPTED GENUS 9910:87JYB nidx=null]
 + Poratia Verhoeff, 1895 [SYNONYM GENUS 9911:BDYSN nidx=null parent=7PNJZ]
Porcellio imbutus trinacrius
 - Porcellio imbutus trinacrius Verhoeff, 1909 [ACCEPTED SUBSPECIES 9910:7HV52 nidx=null]
 + Porcellio imbutus trinacrius Verhoeff, 1908 [ACCEPTED SUBSPECIES 9911:BHL6K nidx=null]
Porcellio quercuum
 - Porcellio quercuum Verhoeff, 1952 [ACCEPTED SPECIES 9910:4LWDS nidx=null]
 + Porcellio quercuum Schnitzler, 1853 [SYNONYM SPECIES 9911:BH9RJ nidx=null parent=5F8H5]
Porcellium fiumanum fiumanum
 - Porcellium fiumanum fiumanum (Verhoeff, 1918) [ACCEPTED SUBSPECIES 9910:7HWJ6 nidx=null]
 + Porcellium fiumanum fiumanum (Verhoeff, 1901) [ACCEPTED SUBSPECIES 9911:BHL6Q nidx=null]
Potomida acarnanica
 - Potomida acarnanica (Kobelt, 1879) [ACCEPTED SPECIES 9910:4M6YG nidx=null]
 + Potomida acarnanica (Kobelt, 1878) [ACCEPTED SPECIES 9911:BFS33 nidx=null]
Praeplanctonia
 - Praeplanctonia [ACCEPTED GENUS 9910:7ZWH9 nidx=null]
 + Praeplanctonia Georgescu, 2009 [PROVISIONALLY_ACCEPTED GENUS 9911:BFGXT nidx=null]
Prespolitorea
 - Prespolitorea Radoman, 1983 [PROVISIONALLY_ACCEPTED GENUS 9910:87H4N nidx=null]
 + Prespolitorea Radoman, 1973 [SYNONYM GENUS 9911:BF8LQ nidx=null parent=7PD9S]
 + Prespolitorea Radoman, 1973 [PROVISIONALLY_ACCEPTED GENUS 9911:BF8LR nidx=null]
Procassidulus (Australanthus)
 - Procassidulus (Australanthus) [ACCEPTED SUBGENUS 9910:8C52 nidx=null]
 + Procassidulus (Australanthus) Bittner, 1892 [SYNONYM SUBGENUS 9911:BF35Z nidx=null parent=7Q79D]
 + Procassidulus (Australanthus) Bittner, 1892 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF362 nidx=null]
Prociphilus (Prociphilus) piniradius
 - Prociphilus (Prociphilus) piniradius [ACCEPTED SPECIES 9910:B7LYW nidx=null]
 + Prociphilus (Prociphilus) piniradius [ACCEPTED SPECIES 9911:BHQLY nidx=null]
Prociphilus (Prociphilus) umarovi
 - Prociphilus (Prociphilus) umarovi [ACCEPTED SPECIES 9910:4MNGN nidx=null]
 + Prociphilus (Prociphilus) umarovi [ACCEPTED SPECIES 9911:BHC7R nidx=null]
Procythereis (Serratocythere)
 - Procythereis (Serratocythere) [ACCEPTED SUBGENUS 9910:7FXH nidx=null]
 + Procythereis (Serratocythere) Hartmann, 1979 [SYNONYM SUBGENUS 9911:BFHHX nidx=null parent=84TL9]
 + Procythereis (Serratocythere) Hartmann, 1979 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHHY nidx=null]
Profusulinella primitiva
 - Profusulinella primitiva Sosnina in Grozdilova & Lebedeva, 1954 [PROVISIONALLY_ACCEPTED SPECIES 9910:8FX8H nidx=null]
 + Profusulinella primitiva Sosnina in Ektova, 1976 [PROVISIONALLY_ACCEPTED SPECIES 9911:BH9YQ nidx=null]
Profusulinella subgen. Depratina
 - Profusulinella subgen. Depratina [ACCEPTED SUBGENUS 9910:858TR nidx=null]
 + Profusulinella subgen. Depratina Leven, 2009 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5K6 nidx=null]
 + Profusulinella subgen. Depratina Leven, 2009 [SYNONYM SUBGENUS 9911:BF5K7 nidx=null parent=7ZTWJ]
Progonocythere (Majungaella)
 - Progonocythere (Majungaella) [ACCEPTED SUBGENUS 9910:8YSBF nidx=null]
 + Progonocythere (Majungaella) Grekoff, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBTV nidx=null]
 + Progonocythere (Majungaella) Grekoff, 1963 [SYNONYM SUBGENUS 9911:BFBTW nidx=null parent=84R8Z]
Prohinnites
 - Prohinnites Gillet, 1921 [ACCEPTED GENUS 9910:B4G5Z nidx=null]
 + Prohinnites Gillet, 1922 [ACCEPTED GENUS 9911:BH8K9 nidx=null]
Promyophorella hashimotoi
 - Promyophorella hashimotoi (T. Kobayashi, 1965) [ACCEPTED SPECIES 9910:7ST78 nidx=null]
 + Promyophorella hashimotoi (T. Kobayashi, 1956) [ACCEPTED SPECIES 9911:BH9Z4 nidx=null]
Promyophorella imamurai
 - Promyophorella imamurai (T. Kobayashi, 1965) [ACCEPTED SPECIES 9910:7ST79 nidx=null]
 + Promyophorella imamurai (T. Kobayashi, 1956) [ACCEPTED SPECIES 9911:BH9Z5 nidx=null]
Propontocypris (Ekpontocypris)
 - Propontocypris (Ekpontocypris) [ACCEPTED SUBGENUS 9910:632QS nidx=null]
 + Propontocypris (Ekpontocypris) Maddocks, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF66H nidx=null]
 + Propontocypris (Ekpontocypris) Maddocks, 1969 [SYNONYM SUBGENUS 9911:BF66J nidx=null parent=84PVD]
Propontocypris (Schedopontocypris)
 - Propontocypris (Schedopontocypris) [ACCEPTED SUBGENUS 9910:7DCJ nidx=null]
 + Propontocypris (Schedopontocypris) Maddocks, 1969 [SYNONYM SUBGENUS 9911:BFHG9 nidx=null parent=84TG9]
 + Propontocypris (Schedopontocypris) Maddocks, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHGB nidx=null]
Prunus × armeniaca var. dasycarpa
 - Prunus × armeniaca var. dasycarpa K. Koch [SYNONYM VARIETY 9910:B8N8D nidx=null parent=4N8NW]
 + Prunus × armeniaca var. dasycarpa K. Koch [SYNONYM VARIETY 9911:BHPXG nidx=null parent=4N8NW]
Psammoscene
 - Psammoscene [ACCEPTED GENUS 9910:6YCN nidx=null]
 + Psammoscene Rhumbler, 1931 [PROVISIONALLY_ACCEPTED GENUS 9911:BFH26 nidx=null]
Pseudocyclammina subgen. Streptocyclammina
 - Pseudocyclammina subgen. Streptocyclammina [ACCEPTED SUBGENUS 9910:7ZX5N nidx=null]
 + Pseudocyclammina subgen. Streptocyclammina Hottinger, 1967 [SYNONYM SUBGENUS 9911:BFHNS nidx=null parent=7ZX5P]
 + Pseudocyclammina subgen. Streptocyclammina Hottinger, 1967 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHNT nidx=null]
Pseudoendothyra subgen. Eoparastaffella
 - Pseudoendothyra subgen. Eoparastaffella [ACCEPTED SUBGENUS 9910:B8YM9 nidx=null]
 + Pseudoendothyra subgen. Eoparastaffella Vdovenko, 1964 [SYNONYM SUBGENUS 9911:BF6C8 nidx=null parent=7ZV39]
 + Pseudoendothyra subgen. Eoparastaffella Vdovenko, 1964 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6C9 nidx=null]
Pseudoendothyra subgen. Palaeostaffella
 - Pseudoendothyra subgen. Palaeostaffella [ACCEPTED SUBGENUS 9910:7ZW5H nidx=null]
 + Pseudoendothyra subgen. Palaeostaffella Liêm, 1966 [SYNONYM SUBGENUS 9911:BFFVT nidx=null parent=7ZW5J]
 + Pseudoendothyra subgen. Palaeostaffella Liêm, 1966 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFFVV nidx=null]
Pseudofissurina mccullochae
 - Pseudofissurina mccullochae Jones, 1994 [ACCEPTED SPECIES 9910:4NWVD nidx=null]
 + Pseudofissurina mccullochae Jones, 1984 [ACCEPTED SPECIES 9911:BHB97 nidx=null]
Pseudofusulina subgen. Daixina
 - Pseudofusulina subgen. Daixina [ACCEPTED SUBGENUS 9910:B8YBV nidx=null]
 + Pseudofusulina subgen. Daixina Ross & Dunbar, 1962 [SYNONYM SUBGENUS 9911:BF5CP nidx=null parent=7ZTV7]
 + Pseudofusulina subgen. Daixina Ross & Dunbar, 1962 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5CQ nidx=null]
Pseudofusulina subgen. Laxifusulina
 - Pseudofusulina subgen. Laxifusulina [ACCEPTED SUBGENUS 9910:7ZVN4 nidx=null]
 + Pseudofusulina subgen. Laxifusulina Xia, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF97B nidx=null]
 + Pseudofusulina subgen. Laxifusulina Xia, 1983 [SYNONYM SUBGENUS 9911:BF97C nidx=null parent=7ZVN5]
Pseudofusulinella subgen. Kanmeraia
 - Pseudofusulinella subgen. Kanmeraia [ACCEPTED SUBGENUS 9910:7ZVK2 nidx=null]
 + Pseudofusulinella subgen. Kanmeraia T. Ozawa, 1967 [SYNONYM SUBGENUS 9911:BF8NT nidx=null parent=7ZVK3]
 + Pseudofusulinella subgen. Kanmeraia T. Ozawa, 1967 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8NV nidx=null]
Pseudogyratrix
 - Pseudogyratrix [ACCEPTED GENUS 9910:726L nidx=null]
 + Pseudogyratrix Meixner, 1938 [PROVISIONALLY_ACCEPTED GENUS 9911:BFH4N nidx=null]
Pseudophragmina subgen. Athecocyclina
 - Pseudophragmina subgen. Athecocyclina [ACCEPTED SUBGENUS 9910:7ZT7S nidx=null]
 + Pseudophragmina subgen. Athecocyclina Vaughan & Cole in Cushman, 1940 [SYNONYM SUBGENUS 9911:BF33T nidx=null parent=7ZT7T]
 + Pseudophragmina subgen. Athecocyclina Vaughan & Cole in Cushman, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF33V nidx=null]
Pseudophragmina subgen. Proporocyclina
 - Pseudophragmina subgen. Proporocyclina [ACCEPTED SUBGENUS 9910:B94BB nidx=null]
 + Pseudophragmina subgen. Proporocyclina Vaughan & Cole in Cushman, 1940 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJYM nidx=null]
 + Pseudophragmina subgen. Proporocyclina Vaughan & Cole in Cushman, 1940 [SYNONYM SUBGENUS 9911:BFJYN nidx=null parent=7ZWMT]
Pseudophragmina subgen. Pseudophragmina
 - Pseudophragmina subgen. Pseudophragmina [ACCEPTED SUBGENUS 9910:7ZWMS nidx=null]
 + Pseudophragmina subgen. Pseudophragmina Douvillé, 1923 [SYNONYM SUBGENUS 9911:BFH5M nidx=null parent=7ZWMT]
 + Pseudophragmina subgen. Pseudophragmina Douvillé, 1923 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH5N nidx=null]
Pseudopineria
 - Pseudopineria [ACCEPTED GENUS 9910:8HJFK nidx=null]
 + Pseudopineria Aguayo, 1938 [ACCEPTED GENUS 9911:BF94Y nidx=null]
Pseudostaffella subgen. Pseudostaffella
 - Pseudostaffella subgen. Pseudostaffella [ACCEPTED SUBGENUS 9910:7ZWNM nidx=null]
 + Pseudostaffella subgen. Pseudostaffella Thomson, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH5X nidx=null]
 + Pseudostaffella subgen. Pseudostaffella Thomson, 1942 [SYNONYM SUBGENUS 9911:BFH5Y nidx=null parent=7ZWNN]
Pseudothesea foliata
 - Pseudothesea foliata Aurivillius, 1931 [ACCEPTED SPECIES 9910:8RDQG nidx=null]
 + Pseudothesea foliata Aurivillius, 1931 [SYNONYM SPECIES 9911:4PDBP nidx=null parent=BHSMG]
Pseudotriloculina
 - Pseudotriloculina Cherif, 1970 [PROVISIONALLY_ACCEPTED GENUS 9910:87K76 nidx=null]
 + Pseudotriloculina Rasheed, 1971 [SYNONYM GENUS 9911:BF97R nidx=null parent=7PCT8]
Ptychophorae
 - Ptychophorae [ACCEPTED SUBORDER 9910:84MRN nidx=null]
 + Ptychophorae Gershwin & Davie, 2013 [PROVISIONALLY_ACCEPTED SUBORDER 9911:BDYNQ nidx=null]
Pupina
 - Pupina Vignard, 1829 [PROVISIONALLY_ACCEPTED GENUS 9910:B7YVZ nidx=null]
 - Pupina Vignard, 1829 [PROVISIONALLY_ACCEPTED GENUS 9910:B8ZBJ nidx=null]
 + Pupina d'Orbigny, 1839 [SYNONYM GENUS 9911:BF9D2 nidx=null parent=7ZTNM]
Puteolina subgen. Sorites
 - Puteolina subgen. Sorites [ACCEPTED SUBGENUS 9910:7JS2 nidx=null]
 + Puteolina subgen. Sorites Hofker, 1971 [SYNONYM SUBGENUS 9911:BFB2X nidx=null parent=7PZX7]
 + Puteolina subgen. Sorites Hofker, 1971 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFB2Y nidx=null]
Pygurus (Echinopygus)
 - Pygurus (Echinopygus) [ACCEPTED SUBGENUS 9910:632YM nidx=null]
 + Pygurus (Echinopygus) d'Orbigny, 1855 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF63C nidx=null]
 + Pygurus (Echinopygus) d'Orbigny, 1855 [SYNONYM SUBGENUS 9911:BF63D nidx=null parent=7PCP4]
Pygurus (Pygurus)
 - Pygurus (Pygurus) [ACCEPTED SUBGENUS 9910:75VX nidx=null]
 + Pygurus (Pygurus) L. Agassiz, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH7T nidx=null]
 + Pygurus (Pygurus) L. Agassiz, 1839 [SYNONYM SUBGENUS 9911:BFH7V nidx=null parent=7PX5G]
Pyrgoniscus noduligerus
 - Pyrgoniscus noduligerus [SYNONYM SPECIES 9910:4QTDL nidx=null parent=3ZWYC]
 + Pyrgoniscus noduligerus (Verhoeff, 1926) [SYNONYM SPECIES 9911:BHBTV nidx=null parent=3ZWYC]
Pyrgulina
 - Pyrgulina A. Adams, 1863 [PROVISIONALLY_ACCEPTED GENUS 9910:87H7D nidx=null]
 + Pyrgulina Matheron, 1902 [SYNONYM GENUS 9911:BDYRK nidx=null parent=7P2P3]
Quadracythere (Tenedocythere)
 - Quadracythere (Tenedocythere) [ACCEPTED SUBGENUS 9910:7TRY nidx=null]
 + Quadracythere (Tenedocythere) Sissingh, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHSK nidx=null]
 + Quadracythere (Tenedocythere) Sissingh, 1972 [SYNONYM SUBGENUS 9911:BFHSL nidx=null parent=84V4W]
Quasiendothyra subgen. Eoquasiendothyra
 - Quasiendothyra subgen. Eoquasiendothyra [ACCEPTED SUBGENUS 9910:7ZV3H nidx=null]
 + Quasiendothyra subgen. Eoquasiendothyra Durkina in Poyarkov, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6CH nidx=null]
 + Quasiendothyra subgen. Eoquasiendothyra Durkina in Poyarkov, 1963 [SYNONYM SUBGENUS 9911:BF6CJ nidx=null parent=7ZV3J]
Quasiendothyra subgen. Quasiendothyra
 - Quasiendothyra subgen. Quasiendothyra [ACCEPTED SUBGENUS 9910:7ZWQ8 nidx=null]
 + Quasiendothyra subgen. Quasiendothyra Rauzer-Chernousova, 1948 in Durkina, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH8K nidx=null]
 + Quasiendothyra subgen. Quasiendothyra Rauzer-Chernousova, 1948 in Durkina, 1984 [SYNONYM SUBGENUS 9911:BFH8L nidx=null parent=7ZWQ9]
Quinqueloculina subgen. Lachlanella
 - Quinqueloculina subgen. Lachlanella [ACCEPTED SUBGENUS 9910:59T9 nidx=null]
 + Quinqueloculina subgen. Lachlanella Vella, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF8Z4 nidx=null]
 + Quinqueloculina subgen. Lachlanella Vella, 1957 [SYNONYM SUBGENUS 9911:BF8Z5 nidx=null parent=7PMBF]
Quinqueloculina subgen. Quinqueloculina
 - Quinqueloculina subgen. Quinqueloculina [ACCEPTED SUBGENUS 9910:B8ZBV nidx=null]
 + Quinqueloculina subgen. Quinqueloculina d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9HF nidx=null]
 + Quinqueloculina subgen. Quinqueloculina d'Orbigny, 1826 [SYNONYM SUBGENUS 9911:BF9HG nidx=null parent=7PX92]
Recilia (Insulanus)
 - Recilia (Insulanus) Linnavuori, 1960 [SYNONYM INFRAGENERIC_NAME 9910:B829V nidx=null parent=8R5HB]
 + Recilia (Insulanus) Linnavuori, 1960 [SYNONYM INFRAGENERIC_NAME 9911:BFJGZ nidx=null parent=8R5HB]
Rectocephala
 - Rectocephala [ACCEPTED GENUS 9910:63QK8 nidx=null]
 + Rectocephala Hyman, 1953 [PROVISIONALLY_ACCEPTED GENUS 9911:BFFZY nidx=null]
Rectuvigerina subgen. Rectuvigerina
 - Rectuvigerina subgen. Rectuvigerina [ACCEPTED SUBGENUS 9910:63QK7 nidx=null]
 + Rectuvigerina subgen. Rectuvigerina Mathews, 1945 [SYNONYM SUBGENUS 9911:BFFZZ nidx=null parent=7PXFM]
 + Rectuvigerina subgen. Rectuvigerina Mathews, 1945 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG22 nidx=null]
Reichelina
 - Reichelina Erk, 1942 [PROVISIONALLY_ACCEPTED GENUS 9910:8FVSP nidx=null]
 + Reichelina Marie, 1954 [SYNONYM GENUS 9911:BFHB8 nidx=null parent=7ZVQT]
Reichelina subgen. Reichelina
 - Reichelina subgen. Reichelina [ACCEPTED SUBGENUS 9910:7ZWSZ nidx=null]
 + Reichelina subgen. Reichelina Erk, 1942 [SYNONYM SUBGENUS 9911:BFHB9 nidx=null parent=7ZWT2]
 + Reichelina subgen. Reichelina Erk, 1942 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHBB nidx=null]
Retroceramus (Retroceramus)
 - Retroceramus (Retroceramus) [ACCEPTED SUBGENUS 9910:8T638 nidx=null]
 + Retroceramus (Retroceramus) Koschelkina, 1958 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:8SMXH nidx=null]
 + Retroceramus (Retroceramus) Koschelkina, 1958 [SYNONYM SUBGENUS 9911:BFHBP nidx=null parent=8SF7H]
Reussella
 - Reussella Galloway, 1933 [PROVISIONALLY_ACCEPTED GENUS 9910:87H8D nidx=null]
 + Reussella Bandel, 1998 [SYNONYM GENUS 9911:BFG2B nidx=null parent=7PGFH]
Reussia
 - Reussia Neviani, 1895 [PROVISIONALLY_ACCEPTED GENUS 9910:B7ZQR nidx=null]
 - Reussia Neviani, 1895 [PROVISIONALLY_ACCEPTED GENUS 9910:B92C8 nidx=null]
 + Reussia Duchassaing & Michelotti, 1860 [SYNONYM GENUS 9911:BFG2C nidx=null parent=84PXR]
 + Reussia Schwager, 1877 [SYNONYM GENUS 9911:BFG2D nidx=null parent=7PFPH]
 + Reussia Schwager, 1877 [PROVISIONALLY_ACCEPTED GENUS 9911:BFG2F nidx=null]
Rhabditis (Pellioditis)
 - Rhabditis (Pellioditis) [ACCEPTED SUBGENUS 9910:8MT6L nidx=null]
 + Rhabditis (Pellioditis) Dougherty, 1953 [SYNONYM SUBGENUS 9911:BDXRF nidx=null parent=8NW6P]
 + Rhabditis (Pellioditis) Dougherty, 1953 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDXRG nidx=null]
Rhabditis (Rhabditoides)
 - Rhabditis (Rhabditoides) [ACCEPTED SUBGENUS 9910:8G296 nidx=null]
 + Rhabditis (Rhabditoides) (T. Goodey, 1929) Sudhaus, 1974 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG2J nidx=null]
 + Rhabditis (Rhabditoides) (T. Goodey, 1929) Sudhaus, 1974 [SYNONYM SUBGENUS 9911:BFG2K nidx=null parent=87KBQ]
 + Rhabditis (Rhabditoides) (Osche, 1952) Schuurmans Stekhoven, 1957 [SYNONYM SUBGENUS 9911:BFG2L nidx=null parent=87KBQ]
Rhagada karajarri
 - Rhagada karajarri Burghardt & Köhler, 2015 [ACCEPTED SPECIES 9910:4RYC7 nidx=null]
 + Rhagada karajarri Burghardt & Köhler, 2014 [ACCEPTED SPECIES 9911:BHC88 nidx=null]
Rhagada worora
 - Rhagada worora Burghardt & Köhler, 2015 [ACCEPTED SPECIES 9910:4RYCV nidx=null]
 + Rhagada worora Burghardt & Köhler, 2014 [ACCEPTED SPECIES 9911:BHC89 nidx=null]
Rhopalomyzus (Rhopalomyzus) hissarica
 - Rhopalomyzus (Rhopalomyzus) hissarica [ACCEPTED SPECIES 9910:B8HVL nidx=null]
 + Rhopalomyzus (Rhopalomyzus) hissarica [ACCEPTED SPECIES 9911:BHDSS nidx=null]
Rhopalopaeus
 - Rhopalopaeus [ACCEPTED GENUS 9910:79DG nidx=null]
 + Rhopalopaeus Verhoeff, 1942 [PROVISIONALLY_ACCEPTED GENUS 9911:BFG37 nidx=null]
Rhyncholampas (Galerolampas)
 - Rhyncholampas (Galerolampas) [ACCEPTED SUBGENUS 9910:B9472 nidx=null]
 + Rhyncholampas (Galerolampas) Cotteau, 1889 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJLF nidx=null]
 + Rhyncholampas (Galerolampas) Cotteau, 1889 [SYNONYM SUBGENUS 9911:BFJLJ nidx=null parent=7PXRB]
Rhynchoprobolus
 - Rhynchoprobolus [ACCEPTED GENUS 9910:79MK nidx=null]
 + Rhynchoprobolus Schmarda, 1859 [PROVISIONALLY_ACCEPTED GENUS 9911:BF9PB nidx=null]
Richterina (Fossirichterina)
 - Richterina (Fossirichterina) [ACCEPTED SUBGENUS 9910:63YLL nidx=null]
 + Richterina (Fossirichterina) Matern, 1929 [SYNONYM SUBGENUS 9911:BF6QY nidx=null parent=84VV6]
 + Richterina (Fossirichterina) Matern, 1929 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6QZ nidx=null]
Richterina (Volkina)
 - Richterina (Volkina) [ACCEPTED SUBGENUS 9910:85JVT nidx=null]
 + Richterina (Volkina) Rabien, 1954 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ4R nidx=null]
 + Richterina (Volkina) Rabien, 1954 [SYNONYM SUBGENUS 9911:BFJ4S nidx=null parent=85JVV]
Robulus subgen. Hemirobulina
 - Robulus subgen. Hemirobulina [ACCEPTED SUBGENUS 9910:4VCT nidx=null]
 + Robulus subgen. Hemirobulina Lys, 1952 [SYNONYM SUBGENUS 9911:BF7N5 nidx=null parent=7PJTX]
 + Robulus subgen. Hemirobulina Lys, 1952 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF7N6 nidx=null]
Romanocidaris
 - Romanocidaris [ACCEPTED GENUS 9910:63S5W nidx=null]
 + Romanocidaris Vadet, 1991 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHCS nidx=null]
Rotalina subgen. Rotalina
 - Rotalina subgen. Rotalina [ACCEPTED SUBGENUS 9910:643X7 nidx=null]
 + Rotalina subgen. Rotalina d'Orbigny, 1839 [SYNONYM SUBGENUS 9911:BFK35 nidx=null parent=7NRSF]
 + Rotalina subgen. Rotalina d'Orbigny, 1839 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK36 nidx=null]
Rugoglobigerina subgen. Archaeoglobigerina
 - Rugoglobigerina subgen. Archaeoglobigerina [ACCEPTED SUBGENUS 9910:7ZP7J nidx=null]
 + Rugoglobigerina subgen. Archaeoglobigerina El-Nakhal & El-Naggar, 1984 [SYNONYM SUBGENUS 9911:BF2QK nidx=null parent=7ZP7K]
 + Rugoglobigerina subgen. Archaeoglobigerina El-Nakhal & El-Naggar, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2QL nidx=null]
Rugoglobigerina subgen. Rugoglobigerina
 - Rugoglobigerina subgen. Rugoglobigerina [ACCEPTED SUBGENUS 9910:7ZWVW nidx=null]
 + Rugoglobigerina subgen. Rugoglobigerina Brönnimann, 1952 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHDC nidx=null]
 + Rugoglobigerina subgen. Rugoglobigerina Brönnimann, 1952 [SYNONYM SUBGENUS 9911:BFHDD nidx=null parent=7ZWVX]
Runa
 - Runa [ACCEPTED GENUS 9910:7B56 nidx=null]
 + Runa L. Agassiz, 1841 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHDM nidx=null]
Saccammina sphaerica
 - Saccammina sphaerica Brady, 1871 [PROVISIONALLY_ACCEPTED SPECIES 9910:893WF nidx=null]
 + Saccammina sphaerica Sars, 1872 [PROVISIONALLY_ACCEPTED SPECIES 9911:BHCV9 nidx=null]
Saccocirrus major
 - Saccocirrus major Perantoni, 1907 [ACCEPTED SPECIES 9910:4TWYD nidx=null]
 + Saccocirrus major Pierantoni, 1907 [ACCEPTED SPECIES 9911:BG53H nidx=null]
Salenia (Pleurosalenia)
 - Salenia (Pleurosalenia) [ACCEPTED SUBGENUS 9910:63NY9 nidx=null]
 + Salenia (Pleurosalenia) Pomel, 1883 [SYNONYM SUBGENUS 9911:BFGVB nidx=null parent=7PTZ5]
 + Salenia (Pleurosalenia) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGVC nidx=null]
Salenia (Salenia)
 - Salenia (Salenia) [ACCEPTED SUBGENUS 9910:643MT nidx=null]
 + Salenia (Salenia) Gray, 1835 [SYNONYM SUBGENUS 9911:BFG4J nidx=null parent=7PYGW]
 + Salenia (Salenia) Gray, 1835 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFG4K nidx=null]
Saphirella
 - Saphirella [ACCEPTED GENUS 9910:643NZ nidx=null]
 + Saphirella Scott T., 1894 [SYNONYM GENUS 9911:BFG4L nidx=null parent=7NGTJ]
 + Saphirella Scott T., 1894 [PROVISIONALLY_ACCEPTED GENUS 9911:BFG4M nidx=null]
Schizaster (Aplospatangus)
 - Schizaster (Aplospatangus) [ACCEPTED SUBGENUS 9910:B944D nidx=null]
 + Schizaster (Aplospatangus) Lambert, 1907 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ8X nidx=null]
 + Schizaster (Aplospatangus) Lambert, 1907 [SYNONYM SUBGENUS 9911:BFJ8Z nidx=null parent=7PYYX]
Schizaster (Dipneustes)
 - Schizaster (Dipneustes) [ACCEPTED SUBGENUS 9910:8CZB nidx=null]
 + Schizaster (Dipneustes) Arnaud in Cotteau, 1891 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF5NT nidx=null]
Schizaster (Linthia)
 - Schizaster (Linthia) [ACCEPTED SUBGENUS 9910:62YGZ nidx=null]
 + Schizaster (Linthia) Desor, 1853 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9RF nidx=null]
 + Schizaster (Linthia) Desor, 1853 [SYNONYM SUBGENUS 9911:BF9RH nidx=null parent=7PMVJ]
Schizaster (Paraster)
 - Schizaster (Paraster) [ACCEPTED SUBGENUS 9910:6GXG nidx=null]
 + Schizaster (Paraster) Pomel, 1869 [SYNONYM SUBGENUS 9911:BFJW6 nidx=null parent=7PYYX]
 + Schizaster (Paraster) Pomel, 1869 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJW7 nidx=null]
Schizaster (Schizaster)
 - Schizaster (Schizaster) [ACCEPTED SUBGENUS 9910:7DJS nidx=null]
 + Schizaster (Schizaster) L. Agassiz, 1835 [SYNONYM SUBGENUS 9911:BF9T7 nidx=null parent=7PYYX]
 + Schizaster (Schizaster) L. Agassiz, 1835 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF9T8 nidx=null]
Schubertella subgen. Schubertella
 - Schubertella subgen. Schubertella [ACCEPTED SUBGENUS 9910:7ZWXW nidx=null]
 + Schubertella subgen. Schubertella Staff & Wedekind, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHGN nidx=null]
 + Schubertella subgen. Schubertella Staff & Wedekind, 1910 [SYNONYM SUBGENUS 9911:BFHGP nidx=null parent=7ZWXX]
Schwageriniformis subgen. Schwageriniformis
 - Schwageriniformis subgen. Schwageriniformis [ACCEPTED SUBGENUS 9910:7ZWY2 nidx=null]
 + Schwageriniformis subgen. Schwageriniformis Bensh, 1996 in Leven & Davydov, 2001 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHGS nidx=null]
 + Schwageriniformis subgen. Schwageriniformis Bensh, 1996 in Leven & Davydov, 2001 [SYNONYM SUBGENUS 9911:BFHGT nidx=null parent=7ZWY3]
Scolelepis (Scolelepis) pettiboneae
 - Scolelepis (Scolelepis) pettiboneae Maciolek, 1986 [ACCEPTED SPECIES 9910:4VRN7 nidx=null]
 + Scolelepis (Scolelepis) pettiboneae Maciolek, 1987 [ACCEPTED SPECIES 9911:BG55X nidx=null]
Scolelepis (Scolelepis) quadridentata
 - Scolelepis (Scolelepis) quadridentata Maciolek, 1986 [ACCEPTED SPECIES 9910:4VRN9 nidx=null]
 + Scolelepis (Scolelepis) quadridentata Maciolek, 1987 [ACCEPTED SPECIES 9911:BG55Y nidx=null]
Scolelepis (Scolelepis) westoni
 - Scolelepis (Scolelepis) westoni Maciolek, 1986 [ACCEPTED SPECIES 9910:4VRNF nidx=null]
 + Scolelepis (Scolelepis) westoni Maciolek, 1987 [ACCEPTED SPECIES 9911:BG562 nidx=null]
Scutariellinae
 - Scutariellinae Annandale, 1912 [PROVISIONALLY_ACCEPTED SUBFAMILY 9910:8V4XJ nidx=null]
 + Scutariellinae Baer, 1953 [SYNONYM SUBFAMILY 9911:7NM85 nidx=null parent=8V4XK]
Scutellina (Eoscutum)
 - Scutellina (Eoscutum) [ACCEPTED SUBGENUS 9910:8D6D nidx=null]
 + Scutellina (Eoscutum) Lambert in Lambert & Thiéry, 1914 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6CR nidx=null]
 + Scutellina (Eoscutum) Lambert in Lambert & Thiéry, 1914 [SYNONYM SUBGENUS 9911:BF6CS nidx=null parent=7Q7LG]
Scyllarocuma
 - Scyllarocuma [ACCEPTED GENUS 9910:63SYT nidx=null]
 + Scyllarocuma Corbera, 2006 [ACCEPTED GENUS 9911:BFG6M nidx=null]
Selenoteuthis
 - Selenoteuthis Voss, 1958 [ACCEPTED GENUS 9910:7PGHN nidx=null]
 + Selenoteuthis G. L. Voss, 1959 [ACCEPTED GENUS 9911:BF9VX nidx=null]
Septabrunsiina subgen. Spinobrunsiina
 - Septabrunsiina subgen. Spinobrunsiina [ACCEPTED SUBGENUS 9910:7ZX3W nidx=null]
 + Septabrunsiina subgen. Spinobrunsiina Conil & Longerstaey, 1980 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHLQ nidx=null]
 + Septabrunsiina subgen. Spinobrunsiina Conil & Longerstaey, 1980 [SYNONYM SUBGENUS 9911:BFHLR nidx=null parent=7ZX3X]
Septaglomospiranella subgen. Rectoseptaglomospiranella
 - Septaglomospiranella subgen. Rectoseptaglomospiranella [ACCEPTED SUBGENUS 9910:7ZWSM nidx=null]
 + Septaglomospiranella subgen. Rectoseptaglomospiranella Reitlinger, 1961 [SYNONYM SUBGENUS 9911:BFHB2 nidx=null parent=7ZWSN]
 + Septaglomospiranella subgen. Rectoseptaglomospiranella Reitlinger, 1961 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHB3 nidx=null]
Septaglomospiranella subgen. Septaglomospiranella
 - Septaglomospiranella subgen. Septaglomospiranella [ACCEPTED SUBGENUS 9910:7ZWYW nidx=null]
 + Septaglomospiranella subgen. Septaglomospiranella Lipina, 1955 in Reitlinger, 1961 [SYNONYM SUBGENUS 9911:BFHHP nidx=null parent=7ZWYX]
 + Septaglomospiranella subgen. Septaglomospiranella Lipina, 1955 in Reitlinger, 1961 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHHQ nidx=null]
Septaria
 - Septaria J. Férussac, 1807 [PROVISIONALLY_ACCEPTED GENUS 9910:8RZWB nidx=null]
 + Septaria Lamarck, 1818 [PROVISIONALLY_ACCEPTED GENUS 9911:BF9WQ nidx=null]
 + Septaria Lamarck, 1818 [SYNONYM GENUS 9911:BF9WR nidx=null parent=7P6MT]
Septatournayella subgen. Rectoseptatournayella
 - Septatournayella subgen. Rectoseptatournayella [ACCEPTED SUBGENUS 9910:7ZWSP nidx=null]
 + Septatournayella subgen. Rectoseptatournayella Brazhnikova & Rostovtseva in Poyarkov, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJZY nidx=null]
 + Septatournayella subgen. Rectoseptatournayella Brazhnikova & Rostovtseva in Poyarkov, 1963 [SYNONYM SUBGENUS 9911:BFJZZ nidx=null parent=7ZTN5]
Serpula (Sclerostyla)
 - Serpula (Sclerostyla) [ACCEPTED SUBGENUS 9910:644T9 nidx=null]
 + Serpula (Sclerostyla) Mörch, 1863 [SYNONYM SUBGENUS 9911:BFK3H nidx=null parent=84T3T]
 + Serpula (Sclerostyla) Mörch, 1863 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK3J nidx=null]
Sertularia cupressoides
 - Sertularia cupressoides Clark, 1876 [ACCEPTED SPECIES 9910:4WYG9 nidx=null]
 + Sertularia cupressoides Lepechin, 1783 [SYNONYM SPECIES 9911:BDY4L nidx=null parent=56NMZ]
 + Sertularia cupressoides Clark, 1877 [SYNONYM SPECIES 9911:BDY4M nidx=null parent=4WYGB]
Siderolina
 - Siderolina [ACCEPTED GENUS 9910:7GP6 nidx=null]
 + Siderolina Defrance, 1824 [PROVISIONALLY_ACCEPTED GENUS 9911:BGM85 nidx=null]
Silicosigmoilina subgen. Bramletteia
 - Silicosigmoilina subgen. Bramletteia [ACCEPTED SUBGENUS 9910:7ZTJK nidx=null]
 + Silicosigmoilina subgen. Bramletteia Israelsky, 1951 [SYNONYM SUBGENUS 9911:BFJBF nidx=null parent=7PZQZ]
 + Silicosigmoilina subgen. Bramletteia Israelsky, 1951 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJBG nidx=null]
Siliqua tenerior
 - Siliqua tenerior (Hedley, 1914) [ACCEPTED SPECIES 9910:6YQHK nidx=null]
 + Siliqua tenerior (Hedley, 1915) [ACCEPTED SPECIES 9911:BHDM8 nidx=null]
Silurocidaris
 - Silurocidaris [ACCEPTED GENUS 9910:7GWR nidx=null]
 + Silurocidaris Regnéll, 1956 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHJT nidx=null]
Sinocaligus dussumieri
 - Sinocaligus dussumieri (Rangnekar, 1957) [ACCEPTED SPECIES 9910:6YR8M nidx=null]
 + Sinocaligus dussumieri (Rangnekar, 1957) [SYNONYM SPECIES 9911:7Z393 nidx=null parent=PKBZ]
Sinostenothyra
 - Sinostenothyra [ACCEPTED GENUS 9910:9H9N6 nidx=null]
 + Sinostenothyra Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7PGTP nidx=null]
Siphogaudryina subgen. Bolivinitella
 - Siphogaudryina subgen. Bolivinitella [ACCEPTED SUBGENUS 9910:7ZTHX nidx=null]
 + Siphogaudryina subgen. Bolivinitella Hofker, 1957 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJB9 nidx=null]
 + Siphogaudryina subgen. Bolivinitella Hofker, 1957 [SYNONYM SUBGENUS 9911:BFJBB nidx=null parent=7PN3X]
Siphonina subgen. Pulsiphonina
 - Siphonina subgen. Pulsiphonina [ACCEPTED SUBGENUS 9910:64379 nidx=null]
 + Siphonina subgen. Pulsiphonina Brotzen, 1948 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH7D nidx=null]
 + Siphonina subgen. Pulsiphonina Brotzen, 1948 [SYNONYM SUBGENUS 9911:BFH7F nidx=null parent=7PX2W]
Sitobion (Sitobion) yasumatsui
 - Sitobion (Sitobion) yasumatsui [ACCEPTED SPECIES 9910:4XTBV nidx=null]
 + Sitobion (Sitobion) yasumatsui [ACCEPTED SPECIES 9911:BHGGB nidx=null]
Soanellina
 - Soanellina [ACCEPTED GENUS 9910:B7CXT nidx=null]
 + Soanellina Betekhtina, 1990 [PROVISIONALLY_ACCEPTED GENUS 9911:BH9K2 nidx=null]
Solenopus nitidulus
 - Solenopus nitidulus Sars, 1969 [SYNONYM SPECIES 9910:4Y6M7 nidx=null parent=46MLY]
 + Solenopus nitidulus M. Sars, 1869 [SYNONYM SPECIES 9911:BHDSL nidx=null parent=46MLY]
Spandelina subgen. Spandelinoides
 - Spandelina subgen. Spandelinoides [ACCEPTED SUBGENUS 9910:7ZX3N nidx=null]
 + Spandelina subgen. Spandelinoides Cushman & Waters, 1928 [SYNONYM SUBGENUS 9911:BFHL7 nidx=null parent=7ZX3P]
 + Spandelina subgen. Spandelinoides Cushman & Waters, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHL8 nidx=null]
Sparganum
 - Sparganum [ACCEPTED GENUS 9910:B8GPH nidx=null]
 + Sparganum Diesing, 1854 [PROVISIONALLY_ACCEPTED GENUS 9911:BH9LM nidx=null]
Spatagoides
 - Spatagoides [ACCEPTED GENUS 9910:7K29 nidx=null]
 + Spatagoides Leske, 1778 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHL9 nidx=null]
Spatangus (Phymapatagus)
 - Spatangus (Phymapatagus) [ACCEPTED SUBGENUS 9910:B94B2 nidx=null]
 + Spatangus (Phymapatagus) Lambert, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJX8 nidx=null]
 + Spatangus (Phymapatagus) Lambert, 1910 [SYNONYM SUBGENUS 9911:BFJX9 nidx=null parent=7Q22D]
Speleocuma
 - Speleocuma [ACCEPTED GENUS 9910:7K89 nidx=null]
 + Speleocuma Corbera, 2002 [ACCEPTED GENUS 9911:BFG8W nidx=null]
Sphaerechinus
 - Sphaerechinus Desor, 1856 [PROVISIONALLY_ACCEPTED GENUS 9910:87KNN nidx=null]
 + Sphaerechinus Desor, 1855 [SYNONYM GENUS 9911:BFB3M nidx=null parent=7Q26P]
Sphaeroidina bulloides
 - Sphaeroidina bulloides d'Orbigny in Deshayes, 1832 [PROVISIONALLY_ACCEPTED SPECIES 9910:9KGGS nidx=null]
 + Sphaeroidina bulloides d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:BHDWK nidx=null]
Spinavaculidae
 - Spinavaculidae [ACCEPTED FAMILY 9910:85GFZ nidx=null]
 + Spinavaculidae Hsieh & Xiao, 1993 [PROVISIONALLY_ACCEPTED FAMILY 9911:BDZ3V nidx=null]
Spinophallus
 - Spinophallus [PROVISIONALLY_ACCEPTED GENUS 9910:7L7P nidx=null]
 + Spinophallus Zamora-Silva & Malaquias, 2017 [PROVISIONALLY_ACCEPTED GENUS 9911:BFB4C nidx=null]
Spiroloculina costigera
 - Spiroloculina costigera Terquem Em. Le Calvez, 1947 [PROVISIONALLY_ACCEPTED SPECIES 9910:8FXHY nidx=null]
 + Spiroloculina costigera Terquem, 1882 [PROVISIONALLY_ACCEPTED SPECIES 9911:BHDZ6 nidx=null]
Spisula (Hemimactra)
 - Spisula (Hemimactra) [ACCEPTED SUBGENUS 9910:9H8G5 nidx=null]
 + Spisula (Hemimactra) Swainson, 1840 [SYNONYM SUBGENUS 9911:BGB7W nidx=null parent=7PHBY]
 + Spisula (Hemimactra) Swainson, 1840 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGB7X nidx=null]
Spiticeras
 - Spiticeras [ACCEPTED SUBGENUS 9910:7LFW nidx=null]
 + Spiticeras [ACCEPTED GENUS 9911:BFHML nidx=null]
 + Spiticeras [ACCEPTED SUBGENUS 9911:BFHMM nidx=null]
Stegaster (Seunaster)
 - Stegaster (Seunaster) [ACCEPTED SUBGENUS 9910:63SPK nidx=null]
 + Stegaster (Seunaster) Lambert, 1912 [SYNONYM SUBGENUS 9911:BFHJ3 nidx=null parent=7PZKD]
 + Stegaster (Seunaster) Lambert, 1912 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHJ4 nidx=null]
Stenhelia (Delavalia)
 - Stenhelia (Delavalia) [ACCEPTED SUBGENUS 9910:42LN nidx=null]
 + Stenhelia (Delavalia) Brady, 1868 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3J4 nidx=null]
 + Stenhelia (Delavalia) Brady, 1868 [SYNONYM SUBGENUS 9911:BF3J5 nidx=null parent=7P88D]
Stralopecten
 - Stralopecten Tucker, 1938 [ACCEPTED GENUS 9910:B4GTP nidx=null]
 + Stralopecten Tucker-Rowland, 1938 [ACCEPTED GENUS 9911:BH9V5 nidx=null]
Striatura (Pseudohyalina)
 - Striatura (Pseudohyalina) [ACCEPTED SUBGENUS 9910:B3KFJ nidx=null]
 + Striatura (Pseudohyalina) E. S. Morse, 1864 [SYNONYM SUBGENUS 9911:BF93B nidx=null parent=7PDV2]
 + Striatura (Pseudohyalina) E. S. Morse, 1864 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF93F nidx=null]
Studeria
 - Studeria Duncan, 1889 [PROVISIONALLY_ACCEPTED GENUS 9910:B7Z27 nidx=null]
 - Studeria Duncan, 1889 [PROVISIONALLY_ACCEPTED GENUS 9910:B8ZMJ nidx=null]
 + Studeria Thomson, 1908 [SYNONYM GENUS 9911:BFB9X nidx=null parent=84TXF]
Stylochopsis
 - Stylochopsis [ACCEPTED GENUS 9910:7PR5 nidx=null]
 + Stylochopsis Stimpson, 1857 [PROVISIONALLY_ACCEPTED GENUS 9911:BFBBC nidx=null]
 + Stylochopsis Collingwood, 1876 [SYNONYM GENUS 9911:BFBBD nidx=null parent=7PW9J]
Stylochus (Stylochus)
 - Stylochus (Stylochus) [ACCEPTED SUBGENUS 9910:7PR7 nidx=null]
 + Stylochus (Stylochus) Marcus & Marcus, 1968 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7ZLKV nidx=null]
 + Stylochus (Stylochus) Marcus & Marcus, 1968 [SYNONYM SUBGENUS 9911:BFBBF nidx=null parent=7Q38K]
Stylotella (Batzella) inops
 - Stylotella (Batzella) inops (Topsent, 1893) [SYNONYM SPECIES 9910:53B7R nidx=null parent=L3NK]
 + Stylotella (Batzella) inops (Topsent, 1891) [SYNONYM SPECIES 9911:BHFJN nidx=null parent=L3NK]
Syllis (Ehlersia)
 - Syllis (Ehlersia) [ACCEPTED SUBGENUS 9910:632P6 nidx=null]
 + Syllis (Ehlersia) Quatrefages, 1865 [SYNONYM SUBGENUS 9911:BF65W nidx=null parent=84TZC]
Taeniocotyle elegans
 - Taeniocotyle elegans (Ollson, 1869) [SYNONYM SPECIES 9910:54H26 nidx=null parent=44K5G]
 + Taeniocotyle elegans (Olsson, 1869) [SYNONYM SPECIES 9911:BHFPL nidx=null parent=44K5G]
Tanaisia (Paratanaisia)
 - Tanaisia (Paratanaisia) [ACCEPTED SUBGENUS 9910:9KVJX nidx=null]
 + Tanaisia (Paratanaisia) Teixeira de Freitas, 1959 [SYNONYM SUBGENUS 9911:BGHPP nidx=null parent=9KVJV]
 + Tanaisia (Paratanaisia) Teixeira de Freitas, 1959 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BGHPQ nidx=null]
Tanaisia (Tamerlania)
 - Tanaisia (Tamerlania) [ACCEPTED SUBGENUS 9910:B7WRD nidx=null]
 + Tanaisia (Tamerlania) Skrjabin, 1924 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDYCB nidx=null]
 + Tanaisia (Tamerlania) Skrjabin, 1924 [SYNONYM SUBGENUS 9911:BDYCC nidx=null parent=B7WRF]
Tealia
 - Tealia [ACCEPTED GENUS 9910:7Q3VH nidx=null]
 + Tealia Gosse, 1858 [PROVISIONALLY_ACCEPTED GENUS 9911:BFGF7 nidx=null]
Temnocephalidae
 - Temnocephalidae Van Steenkiste, Rivlin, Kahn, Wakeman & Leander, 2021 [PROVISIONALLY_ACCEPTED FAMILY 9910:8V4VH nidx=null]
 + Temnocephalidae Monticelli, 1898 [SYNONYM FAMILY 9911:BDVDH nidx=null parent=8V4VJ]
Tenellia gotlandica
 - Tenellia gotlandica Lundin, Malmberg, Martynov & Korshunova, 2023 [ACCEPTED SPECIES 9910:B6D3Z nidx=null]
 + Tenellia gotlandica Lundin, Malmberg, Martynov & Korshunova, 2022 [ACCEPTED SPECIES 9911:BHRZY nidx=null]
Tepidiora
 - Tepidiora [ACCEPTED GENUS 9910:7TX2 nidx=null]
 + Tepidiora Jellinek, 1995 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHSP nidx=null]
Terebellina
 - Terebellina [ACCEPTED GENUS 9910:647D8 nidx=null]
 + Terebellina Ulrich, 1904 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHSR nidx=null]
Tetradomermis shilini
 - Tetradomermis shilini Rubzov, 1973 [ACCEPTED SPECIES 9910:8GKGK nidx=null]
 + Tetradomermis shilini Rubzov, 1967 [ACCEPTED SPECIES 9911:BHFYG nidx=null]
Tetraneura multisetosa
 - Tetraneura multisetosa Pal & Raychaudhuri, 1978 [SYNONYM SPECIES 9910:9YNR2 nidx=null parent=55Q42]
 + Tetraneura multisetosa Pal & Raychaudhuri, 1978 [SYNONYM SPECIES 9911:BHJBR nidx=null parent=55Q42]
 + Tetraneura multisetosa Raychaudhuri, Pal & Ghosh, 1978 [SYNONYM SPECIES 9911:BHJBS nidx=null parent=55Q42]
Tetrataxis subgen. Globotetrataxis
 - Tetrataxis subgen. Globotetrataxis [ACCEPTED SUBGENUS 9910:7ZV9Y nidx=null]
 + Tetrataxis subgen. Globotetrataxis Brazhnikova, 1983 [SYNONYM SUBGENUS 9911:BFJLX nidx=null parent=7Q45R]
 + Tetrataxis subgen. Globotetrataxis Brazhnikova, 1983 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJLY nidx=null]
Thielicidaris
 - Thielicidaris [ACCEPTED GENUS 9910:7VXY nidx=null]
 + Thielicidaris Vadet, 2001 [PROVISIONALLY_ACCEPTED GENUS 9911:BFHTV nidx=null]
Thylechinus (Egyptechinus)
 - Thylechinus (Egyptechinus) [ACCEPTED SUBGENUS 9910:8D42 nidx=null]
 + Thylechinus (Egyptechinus) Lambert, 1936 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF65P nidx=null]
 + Thylechinus (Egyptechinus) Lambert, 1936 [SYNONYM SUBGENUS 9911:BF65Q nidx=null parent=7Q7L5]
Thylechinus (Gagaria)
 - Thylechinus (Gagaria) [ACCEPTED SUBGENUS 9910:4LPB nidx=null]
 + Thylechinus (Gagaria) Duncan, 1889 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF6SX nidx=null]
 + Thylechinus (Gagaria) Duncan, 1889 [SYNONYM SUBGENUS 9911:BF6SY nidx=null parent=7PGDB]
Thylechinus (Thylechinus)
 - Thylechinus (Thylechinus) [ACCEPTED SUBGENUS 9910:7WHK nidx=null]
 + Thylechinus (Thylechinus) Pomel, 1883 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHVG nidx=null]
 + Thylechinus (Thylechinus) Pomel, 1883 [SYNONYM SUBGENUS 9911:BFHVH nidx=null parent=7Q4HL]
Tolypammina subgen. Tolypamminoides
 - Tolypammina subgen. Tolypamminoides [ACCEPTED SUBGENUS 9910:B94DP nidx=null]
 + Tolypammina subgen. Tolypamminoides Chernykh, 1969 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK52 nidx=null]
 + Tolypammina subgen. Tolypamminoides Chernykh, 1969 [SYNONYM SUBGENUS 9911:BFK53 nidx=null parent=7ZWZ8]
Trachyleberis (Acanthocythereis)
 - Trachyleberis (Acanthocythereis) [ACCEPTED SUBGENUS 9910:M68 nidx=null]
 + Trachyleberis (Acanthocythereis) Howe, 1963 [SYNONYM SUBGENUS 9911:BDZ9P nidx=null parent=84L35]
 + Trachyleberis (Acanthocythereis) Howe, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZ9Q nidx=null]
Trachyleberis (Actinocythereis)
 - Trachyleberis (Actinocythereis) [ACCEPTED SUBGENUS 9910:NPR nidx=null]
 + Trachyleberis (Actinocythereis) Puri, 1953 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZD3 nidx=null]
 + Trachyleberis (Actinocythereis) Puri, 1953 [SYNONYM SUBGENUS 9911:BDZD4 nidx=null parent=84L53]
Trachyleberis (Alteratrachyleberis)
 - Trachyleberis (Alteratrachyleberis) [ACCEPTED SUBGENUS 9910:SYR nidx=null]
 + Trachyleberis (Alteratrachyleberis) Li, 1964 [SYNONYM SUBGENUS 9911:BF256 nidx=null parent=84LCL]
 + Trachyleberis (Alteratrachyleberis) Li, 1964 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF257 nidx=null]
Trachyleberis (Costa)
 - Trachyleberis (Costa) [ACCEPTED SUBGENUS 9910:62NSH nidx=null]
 + Trachyleberis (Costa) Neviani, 1928 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDWWR nidx=null]
 + Trachyleberis (Costa) Neviani, 1928 [SYNONYM SUBGENUS 9911:BDWWS nidx=null parent=84MKB]
Trachyleberis (Hermanites)
 - Trachyleberis (Hermanites) [ACCEPTED SUBGENUS 9910:4VTY nidx=null]
 + Trachyleberis (Hermanites) Puri, 1955 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF553 nidx=null]
 + Trachyleberis (Hermanites) Puri, 1955 [SYNONYM SUBGENUS 9911:BF554 nidx=null parent=84P2S]
Tragosia polypoides
 - Tragosia polypoides sensu Stephens, 1917 [SYNONYM SPECIES 9910:57WPY nidx=null parent=K3TM]
 + Tragosia polypoides (Schmidt, 1862) [SYNONYM SPECIES 9911:BHGK9 nidx=null parent=K3TM]
Trama (Neotrama) kulinitschae
 - Trama (Neotrama) kulinitschae [ACCEPTED SPECIES 9910:7CN9B nidx=null]
 + Trama (Neotrama) kulinitschae [ACCEPTED SPECIES 9911:BHKG2 nidx=null]
Trichoniscus muscivagus alticolus
 - Trichoniscus muscivagus alticolus Verhoeff, 1940 [SYNONYM SUBSPECIES 9910:5LLJM nidx=null parent=58G7B]
 + Trichoniscus muscivagus alticolus Verhoeff, 1941 [SYNONYM SUBSPECIES 9911:BHLG6 nidx=null parent=58G7B]
Tricolia pullus pullus
 - Tricolia pullus pullus (Linnaeus, 1758) [ACCEPTED SUBSPECIES 9910:7V3MR nidx=null]
 + Tricolia pullus pullus (Linnaeus, 1758) [SYNONYM SUBSPECIES 9911:7KVCT nidx=null parent=58MSR]
Trigonia (Myophorella) alina
 - Trigonia (Myophorella) alina (Contejean, 1859) [SYNONYM SPECIES 9910:7TDJP nidx=null parent=7S8R9]
 + Trigonia (Myophorella) alina (Contejean, 1860) [SYNONYM SPECIES 9911:BHGPC nidx=null parent=BH535]
Trigonostoma (Ventrilia)
 - Trigonostoma (Ventrilia) [ACCEPTED SUBGENUS 9910:B93TL nidx=null]
 + Trigonostoma (Ventrilia) Jousseaume, 1887 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ3Q nidx=null]
 + Trigonostoma (Ventrilia) Jousseaume, 1887 [SYNONYM SUBGENUS 9911:BFJ3R nidx=null parent=84QLJ]
Triloculina inflata
 - Triloculina inflata d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9910:7Z6DK nidx=null]
 + Triloculina inflata d'Orbigny, 1846 [PROVISIONALLY_ACCEPTED SPECIES 9911:857CC nidx=null]
Triloculina tricarinata
 - Triloculina tricarinata d'Orbigny in Deshayes, 1832 [PROVISIONALLY_ACCEPTED SPECIES 9910:B8JSP nidx=null]
 - Triloculina tricarinata d'Orbigny in Deshayes, 1832 [PROVISIONALLY_ACCEPTED SPECIES 9910:BCLBN nidx=null]
 + Triloculina tricarinata d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:BHGS8 nidx=null]
Triphora (Inella)
 - Triphora (Inella) [ACCEPTED SUBGENUS 9910:8VYHH nidx=null]
 + Triphora (Inella) Bayle, 1879 [SYNONYM SUBGENUS 9911:BDTDX nidx=null parent=7P5RS]
 + Triphora (Inella) Bayle, 1879 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDTDY nidx=null]
Triticites subgen. Rauserites
 - Triticites subgen. Rauserites [ACCEPTED SUBGENUS 9910:7ZWRM nidx=null]
 + Triticites subgen. Rauserites Rozovskaya, 1948 [SYNONYM SUBGENUS 9911:BFH9G nidx=null parent=7ZWRN]
 + Triticites subgen. Rauserites Rozovskaya, 1950 [SYNONYM SUBGENUS 9911:BFH9H nidx=null parent=7ZWRN]
 + Triticites subgen. Rauserites Rozovskaya, 1950 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH9J nidx=null]
Trochalosoma (Trochalosoma)
 - Trochalosoma (Trochalosoma) [ACCEPTED SUBGENUS 9910:82PK nidx=null]
 + Trochalosoma (Trochalosoma) Lambert, 1897 [SYNONYM SUBGENUS 9911:BFHY4 nidx=null parent=7Q5B9]
 + Trochalosoma (Trochalosoma) Lambert, 1897 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHY5 nidx=null]
Trochammina subgen. Ammodiscus
 - Trochammina subgen. Ammodiscus [ACCEPTED SUBGENUS 9910:6298J nidx=null]
 + Trochammina subgen. Ammodiscus Reuss, 1862 in Berthelin, 1878 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZL2 nidx=null]
 + Trochammina subgen. Ammodiscus Reuss, 1862 in Berthelin, 1878 [SYNONYM SUBGENUS 9911:BDZL3 nidx=null parent=7NNTP]
Trochammina subgen. Webbina
 - Trochammina subgen. Webbina [ACCEPTED SUBGENUS 9910:87P4 nidx=null]
 + Trochammina subgen. Webbina Jones, Parker & Brady, 1866 [SYNONYM SUBGENUS 9911:BFGPX nidx=null parent=7Q6JD]
 + Trochammina subgen. Webbina Jones, Parker & Brady, 1866 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFGPY nidx=null]
Trochocyathus (Thecocyathus)
 - Trochocyathus (Thecocyathus) [ACCEPTED SUBGENUS 9910:7VGW nidx=null]
 + Trochocyathus (Thecocyathus) Milne Edwards & Haime, 1848 [SYNONYM SUBGENUS 9911:BFHTG nidx=null parent=84V84]
 + Trochocyathus (Thecocyathus) Milne Edwards & Haime, 1848 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHTH nidx=null]
Trochosmilia (Coelosmilia)
 - Trochosmilia (Coelosmilia) [ACCEPTED SUBGENUS 9910:85BFC nidx=null]
 + Trochosmilia (Coelosmilia) Milne Edwards & Haime, 1850 [SYNONYM SUBGENUS 9911:BFJDY nidx=null parent=84LFH]
 + Trochosmilia (Coelosmilia) Milne Edwards & Haime, 1850 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJDZ nidx=null]
Trochus (Lischkeia)
 - Trochus (Lischkeia) [ACCEPTED SUBGENUS 9910:62XXY nidx=null]
 + Trochus (Lischkeia) P. Fischer, 1879 [SYNONYM SUBGENUS 9911:BF62S nidx=null parent=7P7P6]
 + Trochus (Lischkeia) P. Fischer, 1879 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF62T nidx=null]
Trophonia arctica
 - Trophonia arctica Hansen, 1882 [SYNONYM SPECIES 9910:7D98W nidx=null parent=N4K8]
 + Trophonia arctica Hansen, 1880 [SYNONYM SPECIES 9911:BG7CR nidx=null parent=BHGFB]
Trophonia rugosa
 - Trophonia rugosa Hansen, 1882 [SYNONYM SPECIES 9910:7CX9D nidx=null parent=N4K8]
 + Trophonia rugosa Hansen, 1880 [SYNONYM SPECIES 9911:BG7D4 nidx=null parent=BHGFB]
Tropidauchenia (Grandinenia)
 - Tropidauchenia (Grandinenia) [ACCEPTED SUBGENUS 9910:4QR9 nidx=null]
 + Tropidauchenia (Grandinenia) Minato & D.-N. Chen, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF4T2 nidx=null]
 + Tropidauchenia (Grandinenia) Minato & D.-N. Chen, 1984 [SYNONYM SUBGENUS 9911:BF4T3 nidx=null parent=7P4JL]
Tropidophora
 - Tropidophora Troschel, 1847 [PROVISIONALLY_ACCEPTED GENUS 9910:87HL9 nidx=null]
 + Tropidophora Jeffreys, 1882 [SYNONYM GENUS 9911:BDVZF nidx=null parent=7PK5B]
Trypanosyllis (Trypanobia)
 - Trypanosyllis (Trypanobia) [ACCEPTED SUBGENUS 9910:63VV2 nidx=null]
 + Trypanosyllis (Trypanobia) Imajima & Hartman, 1964 [SYNONYM SUBGENUS 9911:BFHYH nidx=null parent=84VGZ]
 + Trypanosyllis (Trypanobia) Imajima & Hartman, 1964 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHYJ nidx=null]
Tuba
 - Tuba I. Lea, 1833 [PROVISIONALLY_ACCEPTED GENUS 9910:9XF27 nidx=null]
 + Tuba Verneuil, 1848 [SYNONYM GENUS 9911:BFBSQ nidx=null parent=7PK7N]
 + Tuba Duchassaing & Michelotti, 1864 [SYNONYM GENUS 9911:BFBSR nidx=null parent=85K5N]
 + Tuba Renier, 1807 [SYNONYM GENUS 9911:BFBSS nidx=null parent=84QNV]
Tubularia mesembryanthemum
 - Tubularia mesembryanthemum Allman, 1871 [SYNONYM SPECIES 9910:59K2W nidx=null parent=38QWY]
 + Tubularia mesembryanthemum Allman, 1872 [SYNONYM SPECIES 9911:BDY72 nidx=null parent=38QWY]
Turbellaria
 - Turbellaria [ACCEPTED CLASS 9910:7NF4Y nidx=null]
 + Turbellaria Ehrenberg, 1831 [PROVISIONALLY_ACCEPTED CLASS 9911:BDSSX nidx=null]
Turborotalia subgen. Acarinina
 - Turborotalia subgen. Acarinina [ACCEPTED SUBGENUS 9910:B8X7G nidx=null]
 + Turborotalia subgen. Acarinina Samuel, 1972 [SYNONYM SUBGENUS 9911:BDZBN nidx=null parent=7NMP2]
 + Turborotalia subgen. Acarinina Samuel, 1972 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BDZBP nidx=null]
Turborotalia subgen. Turborotalia
 - Turborotalia subgen. Turborotalia [ACCEPTED SUBGENUS 9910:B93SN nidx=null]
 + Turborotalia subgen. Turborotalia Cushman & Bermúdez, 1949 [SYNONYM SUBGENUS 9911:BFHZ8 nidx=null parent=7ZXBT]
 + Turborotalia subgen. Turborotalia Cushman & Bermúdez, 1949 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFHZB nidx=null]
Turcorientalia
 - Turcorientalia Radoman, 1973 [PROVISIONALLY_ACCEPTED GENUS 9910:87HLT nidx=null]
 + Turcorientalia Schütt, 1980 [SYNONYM GENUS 9911:BFBV5 nidx=null parent=7PKBF]
Turricula
 - Turricula Schumacher, 1817 [PROVISIONALLY_ACCEPTED GENUS 9910:9XF2K nidx=null]
 + Turricula H. Adams & A. Adams, 1853 [PROVISIONALLY_ACCEPTED GENUS 9911:BFBVK nidx=null]
 + Turricula H. Adams & A. Adams, 1853 [SYNONYM GENUS 9911:BFBVL nidx=null parent=7PKSD]
 + Turricula O. Fabricius, 1823 [SYNONYM GENUS 9911:BFBVM nidx=null parent=7PKSD]
 + Turricula H. Beck, 1837 [SYNONYM GENUS 9911:BFBVN nidx=null parent=7NH3L]
Turris
 - Turris Batsch, 1789 [PROVISIONALLY_ACCEPTED GENUS 9910:87HM3 nidx=null]
 + Turris Lesson, 1843 [SYNONYM GENUS 9911:BDXHP nidx=null parent=7PMBH]
Typhlops fletcheri
 - Typhlops fletcheri Wall, 1919: 556, Pl. 1 [AMBIGUOUS_SYNONYM SPECIES 9910:89BXN nidx=null parent=3PNW8]
 + Typhlops fletcheri Wall, 1919 [AMBIGUOUS_SYNONYM SPECIES 9911:BHL3Y nidx=null parent=3PNWB]
 + Typhlops fletcheri Wall, 1919: 556, Pl. 1 [AMBIGUOUS_SYNONYM SPECIES 9911:BHL3Z nidx=null parent=3PNW8]
Typosyllis (Typosyllis)
 - Typosyllis (Typosyllis) [ACCEPTED SUBGENUS 9910:84C2 nidx=null]
 + Typosyllis (Typosyllis) Langerhans, 1879 [SYNONYM SUBGENUS 9911:BFBWX nidx=null parent=84TZC]
 + Typosyllis (Typosyllis) Langerhans, 1879 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBWZ nidx=null]
Udeina
 - Udeina Michaelsen, 1910 [ACCEPTED GENUS 9910:84VKH nidx=null]
 + Udeina Michaelsen, 1912 [ACCEPTED GENUS 9911:BFHZP nidx=null]
Umbilia (Umbilia)
 - Umbilia (Umbilia) [ACCEPTED SUBGENUS 9910:84R6 nidx=null]
 + Umbilia (Umbilia) Jousseaume, 1884 [SYNONYM SUBGENUS 9911:BFBYT nidx=null parent=7PKGG]
 + Umbilia (Umbilia) Jousseaume, 1884 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBYV nidx=null]
Unio littoralis var. acarnanicus
 - Unio littoralis var. acarnanicus Kobelt, 1879 [SYNONYM VARIETY 9910:5RYTV nidx=null parent=4M6YG]
 + Unio littoralis var. acarnanicus Kobelt, 1878 [SYNONYM VARIETY 9911:BHNMC nidx=null parent=BFS33]
Unio phaseolus
 - Unio phaseolus Kobelt, 1879 [AMBIGUOUS_SYNONYM SPECIES 9910:7TJXV nidx=null parent=7DLCV]
 + Unio phaseolus Kobelt, 1878 [SYNONYM SPECIES 9911:BHHN4 nidx=null parent=7DLCV]
Uroteuthis (Aestuariolus)
 - Uroteuthis (Aestuariolus) [ACCEPTED SUBGENUS 9910:8BL4 nidx=null]
 + Uroteuthis (Aestuariolus) Alexeyev, 1992 [SYNONYM SUBGENUS 9911:BFC82 nidx=null parent=7PKJZ]
 + Uroteuthis (Aestuariolus) Alexeyev, 1992 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFC83 nidx=null]
Uroteuthis (Photololigo)
 - Uroteuthis (Photololigo) [ACCEPTED SUBGENUS 9910:8FFC nidx=null]
 + Uroteuthis (Photololigo) Natsukari, 1984 [SYNONYM SUBGENUS 9911:BFCCH nidx=null parent=7PKJZ]
 + Uroteuthis (Photololigo) Natsukari, 1984 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFCCJ nidx=null]
Uroteuthis (Uroteuthis)
 - Uroteuthis (Uroteuthis) [ACCEPTED SUBGENUS 9910:85CD nidx=null]
 + Uroteuthis (Uroteuthis) Rehder, 1945 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:7PR5N nidx=null]
 + Uroteuthis (Uroteuthis) Rehder, 1945 [SYNONYM SUBGENUS 9911:BDYGV nidx=null parent=7PKJZ]
Urtica dioica subvar. horrida
 - Urtica dioica subvar. horrida (Wedd.) Wedd. [AMBIGUOUS_SYNONYM SUBVARIETY 9910:8SL87 nidx=null parent=8SFYF]
 + Urtica dioica subvar. horrida (Wedd.) Wedd. [AMBIGUOUS_SYNONYM SUBVARIETY 9911:BHQ2V nidx=null parent=8SFYF]
 + Urtica dioica subvar. horrida Wedd. [AMBIGUOUS_SYNONYM SUBVARIETY 9911:BHQ2W nidx=null parent=8SFYF]
Uterotrema
 - Uterotrema [ACCEPTED GENUS 9910:85HF nidx=null]
 + Uterotrema Platt & Pichelin, 1994 [PROVISIONALLY_ACCEPTED GENUS 9911:7Q5ZH nidx=null]
Uvigerina subgen. Uhligina
 - Uvigerina subgen. Uhligina [ACCEPTED SUBGENUS 9910:B94DT nidx=null]
 + Uvigerina subgen. Uhligina Schubert, 1899 [SYNONYM SUBGENUS 9911:BFK6B nidx=null parent=7Q622]
 + Uvigerina subgen. Uhligina Schubert, 1899 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFK6C nidx=null]
Uvigerina subgen. Uvigerinella
 - Uvigerina subgen. Uvigerinella [ACCEPTED SUBGENUS 9910:85KM nidx=null]
 + Uvigerina subgen. Uvigerinella Cushman, 1926 [SYNONYM SUBGENUS 9911:BFJ2G nidx=null parent=7Q623]
 + Uvigerina subgen. Uvigerinella Cushman, 1926 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFJ2H nidx=null]
Vaginula subgen. Vaginulina
 - Vaginula subgen. Vaginulina [ACCEPTED SUBGENUS 9910:B8ZV9 nidx=null]
 + Vaginula subgen. Vaginulina Roemer, 1838 [SYNONYM SUBGENUS 9911:BFBZV nidx=null parent=7Q62J]
 + Vaginula subgen. Vaginulina Roemer, 1838 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFBZW nidx=null]
Vaginulina subgen. Dentalina
 - Vaginulina subgen. Dentalina [ACCEPTED SUBGENUS 9910:4383 nidx=null]
 + Vaginulina subgen. Dentalina Beutler, 1910 [SYNONYM SUBGENUS 9911:BF3KC nidx=null parent=7NVRJ]
 + Vaginulina subgen. Dentalina Beutler, 1910 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF3KD nidx=null]
Valvulina triangularis
 - Valvulina triangularis d'Orbigny in Guérin-Méneville, 1832 [PROVISIONALLY_ACCEPTED SPECIES 9910:8FXMX nidx=null]
 + Valvulina triangularis d'Orbigny, 1826 [PROVISIONALLY_ACCEPTED SPECIES 9911:BHHWY nidx=null]
Veenia (Nigeria)
 - Veenia (Nigeria) [ACCEPTED SUBGENUS 9910:85GWL nidx=null]
 + Veenia (Nigeria) Reyment, 1963 [SYNONYM SUBGENUS 9911:BFDRH nidx=null parent=85GWM]
 + Veenia (Nigeria) Reyment, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFDRJ nidx=null]
Verbeekina subgen. Armenina
 - Verbeekina subgen. Armenina [ACCEPTED SUBGENUS 9910:7ZR84 nidx=null]
 + Verbeekina subgen. Armenina Sheng, 1963 [SYNONYM SUBGENUS 9911:BF2SD nidx=null parent=7ZR85]
 + Verbeekina subgen. Armenina Sheng, 1963 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BF2SF nidx=null]
Verbeekina subgen. Quasiverbeekina
 - Verbeekina subgen. Quasiverbeekina [ACCEPTED SUBGENUS 9910:7ZWQQ nidx=null]
 + Verbeekina subgen. Quasiverbeekina Wang, Sheng & Zhang, 1981 [SYNONYM SUBGENUS 9911:BFH8S nidx=null parent=7ZWQR]
 + Verbeekina subgen. Quasiverbeekina Wang, Sheng & Zhang, 1981 [PROVISIONALLY_ACCEPTED SUBGENUS 9911:BFH8T nidx=null]
Vexillum
 - Vexillum Röding, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B7VWW nidx=null]
 - Vexillum Röding, 1798 [PROVISIONALLY_ACCEPTED GENUS 9910:B8V35 nidx=null]
 + Vexillum Fol, 1869 [SYNONYM GENUS 9911:BDTVN nidx=null parent=7Q67T]
Vietsoma
 - Vietsoma [ACCEPTED GENUS 9910:845VM nidx=null]
 + Vietsoma Van Cleave & Mueller, 1932 [PROVISIONALLY_ACCEPTED GENUS 9911:BFJ4K nidx=null]
Weinmannia microphylla
 - Weinmannia microphylla Ruiz & Pav. ex López [ACCEPTED SPECIES 9910:B73XC nidx=null]
 + Weinmannia microphylla Ruiz & Pav. ex López [ACCEPTED SPECIES 9911:BFTCH nidx=null]
 + Weinmannia microphylla Ruiz & Pav. [SYNONYM SPECIES 9911:BFTCJ nidx=null parent=5BWKJ]
Willinachoides
 - Willinachoides Lima, Aguilera & Tavares, 2022 [ACCEPTED GENUS 9910:BC8JH nidx=null]
 + Willinachoides Lima, Aguilera & Tavares, 2021 [ACCEPTED GENUS 9911:BHBHR nidx=null]
Willinachoides santanai
 - Willinachoides santanai Lima, Aguilera & Tavares, 2022 [ACCEPTED SPECIES 9910:BDF8K nidx=null]
 + Willinachoides santanai Lima, Aguilera & Tavares, 2021 [ACCEPTED SPECIES 9911:BHQTK nidx=null]
Xenocidaris
 - Xenocidaris [ACCEPTED GENUS 9910:88PW nidx=null]
 + Xenocidaris Schultze, 1866 [PROVISIONALLY_ACCEPTED GENUS 9911:BFJ5W nidx=null]
Yonganospira
 - Yonganospira [ACCEPTED GENUS 9910:9H9WB nidx=null]
 + Yonganospira Youluo, 1978 [PROVISIONALLY_ACCEPTED GENUS 9911:7PL8J nidx=null]