Crassasulca burnupi (É. Lamy, 1920) South Africa, Natal62,4 mm
Crassatella camurus (FOSSIL) G.B. Pritchard, 1903 †
Anthonya cantiana (FOSSIL) Woods, 1906 † England, Kent
Crassatella capensis (É. Lamy, 1917) South Africa, Cape20,4 mm
Crassatella carcarensis (FOSSIL) O.G. Michelotti, 1847 † Italy, Friuli-Venezia Giulia
Talabrica carnea (R. Tate, 1891) South Australia
Crassatella carolinensis (FOSSIL) T.A. Conrad, 1875 †
Indocrassatella cherelae J. Poutiers, 1981 Taiwan9,6 mm
Kalolophus chipolanus (FOSSIL) (W.H. Dall, 1903 †) Florida
Crassatella cipitis (FOSSIL) Berezovsky † Ukraine28 mm
Crassatella cipitis curtus Berezovsky Ukraine27 mm
Bathytormus clarkensis (FOSSIL) † United States, Alabama, Clarke
Spissatella clifdenensis (FOSSIL) Finlay, 1926 †
Salaputium communis (FOSSIL) (Tate 1896) †
Crassatella compressa (FOSSIL) J.B.P.A. Lamarck, 1806 † France, Paris Basin23 mm
Crassatella compressissima (FOSSIL) Dufour, 1881 † France, Brittany14 mm
Crassatella concentrica (FOSSIL) F. Dujardin, 1837 † France, Aquitaine
Cypricardella concentrica (FOSSIL) Hind, 1899 † Germany
Crassatina contraria (J.F. Gmelin, 1791) Mozambique29 mm
Eucrassatella corbuloides (L.A. Reeve, 1842)
Crassatella corioensis (FOSSIL) R. Tate, 1886 †
Crassatella corrugata (FOSSIL) R. Tate, 1886 †
Crassatina corrugata (A. Adams & L.A. Reeve,1850)
Crassinella coxa A.A. Olsson, 1964
Crassatella crebrilirata G.B. II Sowerby, 1870 South Africa, Jeffreys Bay28,8 mm
Eucrassatella cumingii (C.B. Adams, 1854) Australia, Bowen58,4 mm
Crassatella curata (FOSSIL) G.P. Deshayes † France, Normandy8 mm
Bathytormus curatus (FOSSIL) (G.P. Deshayes, 1857 †) France, Paris Basin36 mm
Crassatella cygnea (FOSSIL) (J.H. Chemnitz, 1782 †)
Salaputium dakarense (R. von Cosel, 1995) Senegal, Dakar14,6 mm
Crassatella dalli (FOSSIL) C.S. Weaver, 1916 †
Eucrassatella decipiens (L.A. Reeve, 1842) Australia, Port Lincoln60 mm
Crassatella dennanti (FOSSIL) R. Tate, 1886 † Australia, Victoria57 mm
Crassatella dennati (FOSSIL) R. Tate, 1886 †
Crassatella densicostata (FOSSIL) Berezovsky † Ukraine44 mm