Acanthocythereis Howe, 1963 (basis of record)
Acanthocythereis dunelmensis (Norman, 1865) accepted as Actinocythereis dunelmensis (Norman, 1865) (basis of record)
Acetabulastoma Schornikov, 1970 (basis of record)
Acetabulastoma hyperboreum (Scott, 1899) (basis of record)
Alacia Poulsen, 1973 (basis of record)
Argilloecia Sars, 1866 (basis of record)
Argilloecia conoidea Sars, 1923 (basis of record)
Aspidoconcha De Vos, 1953 (basis of record)
Aspidoconcha limnoriae de Vos, 1953 (basis of record)
Baffinicythere Hazel, 1967 (basis of record)
Baffinicythere howei (Hazel, 1967) Hazel, 1967 (basis of record)
Bathyconchoecia Deevey, 1968 (basis of record)
Bathyconchoecia arctica Angel, 1976 (basis of record)
Boroecia Poulsen, 1973 (basis of record)
Boroecia borealis (Sars, 1866) (basis of record)
Boroecia maxima (Brady & Norman, 1896) (basis of record)
Bythocythere Sars, 1866 (basis of record)
Bythocythere constricta Sars, 1866 (basis of record)
Bythocythere dromedaria Sars, 1866 (basis of record)
Bythocytheridae Sars, 1926 (basis of record)
Cluthia Neale, 1973 (basis of record)
Cluthia cluthae (Brady, Crosskey & Robertson, 1874) † (basis of record)
Cyprideis Jones, 1857 (basis of record)
Cyprideis torosa (Jones, 1850) (basis of record)
Cypridinidae Baird, 1850 (basis of record)
Cythere Mueller, 1785 (basis of record)
Cythere lutea Müller, 1785 (basis of record)
Cythereis Jones, 1849 (basis of record)
Cytherella Jones, 1849 (basis of record)
Cytherella abyssorum Sars, 1866 (basis of record)
Cytherellidae Sars, 1866 (basis of record)
Cytheretta Müller, 1894 (basis of record)
Cytherettidae Triebel, 1952 accepted as Cytherettinae Triebel, 1952 (basis of record)
Cytheridae Baird, 1850 (basis of record)
Cytherideidae Sars, 1925 (basis of record)
Cytheroidea Baird, 1850 (basis of record)
Cytheroidea incertae sedis (basis of record)
Cytherois Müller, 1884 (basis of record)
Cytherois arenicola Klie, 1929 (basis of record)
Cytherois pusilla Sars, 1928 (basis of record)
Cytherois vitrea (Sars, 1866) Sars, 1890 (basis of record)
Cytheromorpha Hirschmann, 1909 (basis of record)
Cytheropteron Sars, 1866 (basis of record)
Cytheropteron alatum Sars, 1866 (basis of record)
Cytheropteron angulatum Brady & Robertson, 1872 (basis of record)
Cytheropteron arcticum Neale & Howe, 1973 (basis of record)
Cytheropteron dromedaria (Sars, 1866) (basis of record)
Cytheropteron hamatum Sars, 1869 (basis of record)
Cytheropteron inflatum Brady, Crosskey & Robertson, 1874 (basis of record)
Cytheropteron latissimum (Norman, 1865) (basis of record)
Cytheropteron nodosoalatum Neale & Howe, 1973 (basis of record)
Cytheropteron nodosum Brady, 1868 † accepted as Oculocytheropteron nodosum (Brady, 1868) (basis of record)
Cytheropteron pseudoinflatum Whatley & Eynon, 1996 (basis of record)
Cytheropteron punctatum Brady, 1868 (basis of record)
Cytheropteron pyramidale Brady, 1868 (basis of record)
Cytheropteron testudo Sars, 1869 (basis of record)
Cytherura Sars, 1866 (basis of record)
Cytherura cochlearis Klie, 1929 (basis of record)
Cytherura gibba (Müller, 1785) (basis of record)
Cytheruridae Müller, 1894 (basis of record)
Discoconchoecia Martens, 1979 (basis of record)
Discoconchoecia elegans (Sars, 1866) (basis of record)
Elofsonella Pokorny, 1955 (basis of record)
Elofsonella concinna (Jones, 1857) Pokorny, 1955 (basis of record)
Elofsonia Wagner, 1957 (basis of record)
Elofsonia baltica (Hirschmann, 1909) (basis of record)
Eucythere Brady, 1868 (basis of record)
Eucythere anglica Brady, 1868 (basis of record)
Eucythere argus (Sars, 1866) (basis of record)
Eucythere declivis (Norman, 1865) (basis of record)
Eucytheridae Puri, 1954 (basis of record)
Eucytherura Müller, 1893 (basis of record)
Eucytherura delineata Whatley & Eynon, 1996 (basis of record)
Finmarchinella Swain, 1963 (basis of record)
Finmarchinella (Barentsovia) Neale, 1974 (basis of record)
Finmarchinella (Barentsovia) angulata (Sars, 1866) (basis of record)
Finmarchinella (Barentsovia) barenzovensis (Mandelstam, 1957) (basis of record)
Finmarchinella finmarchica (Sars, 1866) (basis of record)
Halocyprididae Dana, 1853 (basis of record)
Hemicytheridae Puri, 1953 (basis of record)
Hemicytherura Elofson, 1941 (basis of record)
Hemicytherura clathrata (Sars, 1866) (basis of record)
Henryhowella Puri, 1957 (basis of record)
Heterocyprideis Elofson, 1941 (basis of record)
Heterocyprideis fascis (Brady & Norman, 1889) Hazel, 1968 (basis of record)
Heterocyprideis sorbyana (Jones, 1857) (basis of record)
Hirschmannia Elofson, 1941 (basis of record)
Hirschmannia viridis (Müller, 1785) (basis of record)
Jonesia Brady, 1866 (basis of record)
Krithe Brady, Crosskey & Robertson, 1874 (basis of record)
Krithe producta Brady, 1880 (basis of record)
Krithidae Mandelstam, 1958 (basis of record)
Leptocythere Sars, 1925 (basis of record)
Leptocythere castanea (Sars, 1866) (basis of record)
Leptocythere lacertosa (Hirschmann, 1912) (basis of record)
Leptocythere pellucida (Baird, 1850) (basis of record)
Leptocytheridae Hanai, 1957 (basis of record)
Loxocauda Schornikov, 1969 (basis of record)
Loxoconcha Sars, 1866 (basis of record)
Loxoconcha rhomboidea (Fischer, 1855) (basis of record)