• Abyssocythere carpathica Pokorny, 1975 †
• Acanthocythereis ascolii (Puri, 1963) †
• Acanthocythereis dunelmensis (Norman, 1865) accepted as Actinocythereis dunelmensis (Norman, 1865)
• Acanthocythereis hystrix (Reuss, 1850) Sissingh, 1972 †
• Acanthocythereis ornata (Mueller, 1894)
• Acetabulastoma hyperboreum (Scott, 1899)
• Actinocythereis dunelmensis (Norman, 1865)
• Aglaiocypris complanata (Brady & Robertson, 1869) accepted as Paracypris complanata (Brady & Robertson, 1869)
• Aglaiocypris rara (Mueller, 1894) Reys, 1961 accepted as Hansacypris rara (Mueller, 1894)
• Alacia alata (G.W. Müller, 1906)
• Alacia alata alata (G.W. Müller, 1906)
• Alacia leptothrix (G.W. Müller, 1906)
• Alacia valdiviae (G.W. Müller, 1906)
• Anchistrocheles acerosa (Brady, 1868) Brady & Norman, 1889
• Angulorostrum segonzaci Kornicker, 1981
• Archiconchoecemma simula (Deevey, 1982)
• Archiconchoecia bifurcata Deevey, 1978
• Archiconchoecia bimucronata Deevey, 1978
• Archiconchoecia bispicula Deevey, 1978
• Archiconchoecia cucullata (Brady, 1902)
• Archiconchoecia cucullata cucullata (Brady, 1902)
• Archiconchoecia cuneata G.W. Müller, 1908
• Archiconchoecia fabiformis Deevey, 1978
• Archiconchoecia falcata Deevey, 1978
• Archiconchoecia gastrodes Deevey, 1978
• Archiconchoecia longiseta Deevey, 1978
• Archiconchoecia pilosa Deevey, 1978
• Archiconchoecia simula Deevey, 1982 accepted as Archiconchoecemma simula (Deevey, 1982)
• Archiconchoecia striata G.W. Müller, 1894
• Archiconchoecia ventricosa G.W. Müller, 1906
• Archiconchoecia versicula Deevey, 1978
• Archypolycope punctata (Sars, 1869)
• Argilloecia (Robustoargilloecia) acuminata Mueller, 1894 accepted as Robustoargilloecia acuminata Mueller, 1894
• Argilloecia acuminata Mueller, 1894 accepted as Robustoargilloecia acuminata Mueller, 1894
• Argilloecia bulbifera Mueller, 1894
• Argilloecia caudata Mueller, 1894
• Argilloecia conoidea Sars, 1923
• Argilloecia cylindrica Sars, 1866
• Argilloecia levis Mueller, 1894
• Argilloecia micra Bonaduce, Ciampo & Masoli, 1976 accepted as Australoecia micra (Bonaduce, Ciampo & Masoli, 1976)
• Argilloecia minor Mueller, 1894
• Argilloecia propinqua Brady, 1904
• Argilloecia robusta Bonaduce, Ciampo & Masoli, 1976
• Argulus arcassonensis Cuénot, 1912
• Argulus foliaceus (Linnaeus, 1758)
• Argulus purpureus (Risso, 1826) accepted as Argulus vittatus (Rafinesque-Schmaltz, 1814)
• Argulus vittatus (Rafinesque-Schmaltz, 1814)
• Aspidoconcha humilis (Brady & Norman, 1889) Mckenzie, 1972
• Aspidoconcha limnoriae de Vos, 1953
• Asterope abyssicola Sars, 1869 accepted as Prionotoleberis abyssicola (Sars, 1869)
• Asterope mariae (Baird, 1850) accepted as Cylindroleberis mariae (Baird, 1850)
• Asterope muelleri Skogsberg, 1920 accepted as Parasterope muelleri (Kornicker, 1958)
• Asterope norvegica Sars, 1869 accepted as Prionotoleberis norvegica (Sars, 1869)
• Asterope teres (Norman, 1861) accepted as Parasterope muelleri (Kornicker, 1958)
• Aurila arborescens (Brady, 1865) accepted as Hemicythere arborescens (Brady, 1865) Robinson, 1978
• Aurila convexa (Baird, 1850)
• Aurila cymbaeformis (Seguenza, 1883)
• Aurila glyptica Barbeito-Gonzalez, 1971
• Aurila interpretis Uliczny, 1969 †
• Aurila prasina Barbeito-Gonzalez, 1971
• Aurila punctata (Muenster, 1830) represented as
• Aurila speyeri (Brady, 1868)
• Aurila woodwardii (Brady, 1868)
• Aurila woutersi Horne, 1986
• Australoecia micra (Bonaduce, Ciampo & Masoli, 1976)
• Azygocypridina imperator (Brady, 1880)
• Azygocypridina imperialis (Stebbing, 1901)
• Baffinicythere emarginata (Sars, 1866)
• Baffinicythere howei (Hazel, 1967) Hazel, 1967
• Basslerites berchoni (Brady, 1870)
• Basslerites teres (Brady, 1869)
• Bathyconchoecia arctica Angel, 1976
• Bathyconchoecia caini Ellis, 1989
• Bathyconchoecia darcythompsoni (Scott, 1909) accepted as Scottoecia darcythompsoni (Scott, 1909)
• Bathyconchoecia deeveyae Kornicker, 1970
• Bathyconchoecia diacantha Deevey, 1975
• Bathyconchoecia foveolata Deevey, 1968 accepted as Scottoecia foveolata (Deevey, 1968)
• Bathyconchoecia galerita Deevey, 1968
• Bathyconchoecia hardingae Deevey, 1975
• Bathyconchoecia kornickeri Deevey, 1968
• Bathyconchoecia laqueata Deevey, 1968
• Bathyconchoecia latrostris Poulsen, 1972
• Bathyconchoecia longispinata Ellis, 1987
• Bathyconchoecia nodosa Poulsen, 1972
• Bathyconchoecia paulula Deevey, 1968
• Bathyconchoecia sagittarius Deevey, 1968
• Bathyconchoecia septemspinosa Angel, 1970
• Bathyconchoecia subrufa Angel, 1970 accepted as Scottoecia subrufa (Angel, 1970)
• Bathynocythere styx Malz & Jellinek, 1994
• Bonnyannella robertsoni (Brady, 1868)
• Boreostoma variabile (Baird, 1835) †
• Boroecia borealis (Sars, 1866)
• Boroecia maxima (Brady & Norman, 1896)
• Bosquetina carinella (Reuss, 1850) Ruggieri, 1962 †
• Bosquetina dentata (Mueller, 1894)
• Bosquetina pectinata (Bosquet, 1852) Keij, 1957 †
• Brunneostoma breve (Mueller, 1894) Schornikov, 1993
• Brunneostoma incongruens (Mueller, 1894) Schornikov, 1993
• Buntonia (Rectobuntonia) subulata (Ruggieri, 1954) Sissingh, 1972 † accepted as Rectobuntonia subulata (Ruggieri, 1954) Ruggieri, 1992 †
• Buntonia dertonensis (Ruggieri, 1954) Ciampo, 1972 †