Grandidieria burtoni singularis J.R. Bourguignat, 1888
Grandidieria burtoni smithi J.R. Bourguignat, 1885
Radiatula caerulea (I. Lea, 1831)
Unio caffer (C.F.F. von Krauss, 1848)
Nephronaias calamitarum (P.M.A. Morelet, 1849)
Barynaias caldwellii (I. Lea, 1858)
Anodonta californiensis I. Lea, 1852
Sphenonaias callosa (I. Lea, 1841)
Physunio cambodiensis (I. Lea, 1856)
Pseudodon cambodjensis (S.A.A. Petit De La Saussaye, 1865)
Pseudodon cambodjensis tenerrimus R.A.M. Brandt, 1974
Leoparreysia canefrii Vikhrev,Bolotov & Kondakov, 2017
Potamilus capax J. Green, 1832
Cuneopsis capitatus (P.M. Heude)
Dysnomia capsaeformis (I. Lea, 1834)
Lampsilis cardium C.S. Rafinesque, 1820
Solenaia carinata (P.M. Heude, 1877)
Pilsbryoconcha carinifera (T.A. Conrad, 1837)
Lampsilis cariosa (T. Say, 1817)
Uniomerus carolinianus (L.A.G. d'A. Bosc, 1801)
Unio carteri (FOSSIL) Hislop, 1859 †
Anodonta cataracta T. Say, 1817
Caudiculatus caudiculatus (E.C. Von Martens, 1866)
Lamprotula caveata (P.M. Heude, 1877)
Cuneopsis celtiformis (P.M. Heude, 1874)
Fusconaia cerina (T.A. Conrad, 1838)
Nephronaias championi (E.C. Von Martens, 1900)
Pseudodon chaperi (J.J.M. de Morgan, 1885)
Radiatula chaudhurii H.B. Preston, 1912
Nitia chefneuxi (H. Neuville& J.G. Anthony, 1906)
Acuticosta chinensis (I. Lea, 1868)
Acuticosta chinensis laevis (P.M. Heude, 1883)
Acuticosta chinensis squammosus (P.M. Heude, 1883)
Scabies chinensis Y.Y. Liu, Y.H. Duan& K.Y. Lai, 1991
Elliptio chipolaensis B. Walker, 1905