Acanthocythereis Howe, 1963 (basis of record)
Acanthocythereis dunelmensis (Norman, 1865) accepted as Actinocythereis dunelmensis (Norman, 1865) (basis of record)
Argilloecia Sars, 1866 (basis of record)
Argilloecia cylindrica Sars, 1866 (basis of record)
Argilloecia propinqua Brady, 1904 (basis of record)
Aspidoconcha De Vos, 1953 (basis of record)
Aspidoconcha humilis (Brady & Norman, 1889) Mckenzie, 1972 (basis of record)
Aspidoconcha limnoriae de Vos, 1953 (basis of record)
Asterope Philippi, 1840 accepted as Cylindroleberis Brady, 1867 (basis of record)
Asterope mariae (Baird, 1850) accepted as Cylindroleberis mariae (Baird, 1850) (basis of record)
Aurila Pokorny, 1955 (basis of record)
Aurila arborescens (Brady, 1865) accepted as Hemicythere arborescens (Brady, 1865) Robinson, 1978 (basis of record)
Aurila convexa (Baird, 1850) (basis of record)
Aurila woutersi Horne, 1986 (basis of record)
Azygocypridina Sylvester-Bradley, 1950 (basis of record)
Baffinicythere Hazel, 1967 (basis of record)
Bairdiidae Sars, 1865 (basis of record)
Bairdioidea Sars, 1888 (basis of record)
Bythocyprididae Maddocks, 1969 (basis of record)
Bythocypris Brady, 1880 (basis of record)
Bythocypris bosquetiana (Brady, 1866) Brady & Norman, 1889 (basis of record)
Bythocypris obtusata (Sars, 1866) (basis of record)
Bythocythere Sars, 1866 (basis of record)
Bythocythere bradleyi Athersuch, Horne & Whittaker, 1983 (basis of record)
Bythocythere bradyi Sars, 1926 (basis of record)
Bythocythere constricta Sars, 1866 (basis of record)
Bythocythere intermedia Elofson, 1938 (basis of record)
Bythocythere robinsoni Athersuch, Horne & Whittaker, 1983 (basis of record)
Bythocythere turgida Sars, 1866 (basis of record)
Bythocythere zetlandica Athersuch, Horne & Whittaker, 1983 (basis of record)
Bythocytheridae Sars, 1926 (basis of record)
Callistocythere Ruggieri, 1953 (basis of record)
Callistocythere badia (Norman, 1862) (basis of record)
Callistocythere littoralis (Müller, 1894) accepted as Sagmatocythere littoralis (Müller, 1894) (basis of record)
Callistocythere murrayi Whittaker, 1978 † (basis of record)
Candonidae Kaufmann, 1900 (basis of record)
Carinocythereis Ruggieri, 1956 (basis of record)
Carinocythereis carinata (Roemer, 1838) (basis of record)
Carinocythereis whitei (Baird, 1850) (basis of record)
Celtia Neale, 1973 † (basis of record)
Celtia quadridentata (Baird, 1850) (basis of record)
Conchoecia Dana, 1849 (basis of record)
Conchoecia hyalophyllum Claus, 1890 accepted as Hyalocoecia hyalophyllum (Claus, 1890) (basis of record)
Conchoecia magna Claus, 1874 (basis of record)
Conchoecilla Claus, 1890 (basis of record)
Conchoecilla daphnoides Claus, 1890 (basis of record)
Conchoecissa Claus, 1890 (basis of record)
Conchoecissa imbricata (Brady, 1880) (basis of record)
Costa Neviani, 1928 † (basis of record)
Costa runcinata (Baird, 1850) (basis of record)
Cuneocythere Lienenklaus, 1894 † (basis of record)
Cuneocythere semipunctata (Brady, 1868) (basis of record)
Cuneocytheridae Mandelstam, 1959 (basis of record)
Cushmanideidae Puri, 1974 in Hartmann & Puri, 1974 (basis of record)
Cyprideis Jones, 1857 (basis of record)
Cyprideis torosa (Jones, 1850) (basis of record)
Cypridina Milne Edwards, 1840 (basis of record)
Cypridina megalops Sars, 1872 accepted as Skogsbergia megalops (Sars, 1872) (basis of record)
Cypridinidae Baird, 1850 (basis of record)
Cypridoidea Baird, 1845 (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)
Cytherella serrulata Brady & Norman, 1896 (basis of record)
Cytherellidae Sars, 1866 (basis of record)
Cytheridae Baird, 1850 (basis of record)
Cytheridea Bosquet, 1852 (basis of record)
Cytheridea angustata (Baird, 1850) (basis of record)
Cytherideidae Sars, 1925 (basis of record)
Cytheroidea Baird, 1850 (basis of record)
Cytherois Müller, 1884 (basis of record)
Cytherois fischeri (Sars, 1866) (basis of record)
Cytherois pusilla Sars, 1928 (basis of record)
Cytherois stephanidesi Klie, 1938 (basis of record)
Cytherois vitrea (Sars, 1866) Sars, 1890 (basis of record)
Cytheropteron Sars, 1866 (basis of record)
Cytheropteron alatum Sars, 1866 (basis of record)
Cytheropteron crassipinnatum Brady & Norman, 1889 (basis of record)
Cytheropteron depressum Brady & Norman, 1889 accepted as Microxestoleberis depressa (Brady & Norman, 1889) Whatley & Maybury, 1988 (basis of record)
Cytheropteron dorsocostatum Whatley & Masson, 1979 (basis of record)
Cytheropteron inflatum Brady, Crosskey & Robertson, 1874 (basis of record)
Cytheropteron inornatum Brady & Robertson, 1872 (basis of record)
Cytheropteron latissimum (Norman, 1865) (basis of record)
Cytheropteron nodosum Brady, 1868 † accepted as Oculocytheropteron nodosum (Brady, 1868) (basis of record)
Cytheropteron punctatum Brady, 1868 (basis of record)
Cytheropteron pyramidale Brady, 1868 (basis of record)
Cytheropteron subcircinatum Sars, 1866 (basis of record)
Cytherura Sars, 1866 (basis of record)
Cytherura gibba (Müller, 1785) (basis of record)
Cytheruridae Müller, 1894 (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)
Elofsonia pusilla (Brady & Robertson, 1870) (basis of record)
Eucythere Brady, 1868 (basis of record)
Eucythere anglica Brady, 1868 (basis of record)
Eucythere argus (Sars, 1866) (basis of record)