Chlamys chathamensis (FOSSIL) (F.W. Hutton, 1873 †)
Euvola chazaliei (P. Dautzenberg, 1900)
Merklinia chihuahuensis (FOSSIL) (Bose 1910) †
Lindapecten chipolanus (FOSSIL) (W.H. Dall, 1898 †)
Chlamys choctavensis (FOSSIL) T.H. Aldrich, 1895 †
Chlamys chosenica J.T. Kuroda, 1932
Palliolum cibaoense (FOSSIL) Waller, 2011 †
Chlamys cinnabarina J.F. Bolten, 1798
Periclaraia circularis (FOSSIL) Li & Ding, 1981 †
Chlamys clarkeana (FOSSIL) †
Palliolum clathratum (E.C. Von Martens, 1881)
Camptochlamys clathratus (FOSSIL) F.A. Roemer, 1836 †
Pseudamussium clavatum (G.S. Poli, 1795)
Pseudamussium clavatum dumasii (B.C.M. Payraudeau, 1826)
Indopecten clignetti (FOSSIL) (Krumbeck, 1913 †)
Placopecten clintonius (FOSSIL) (T. Say, 1824 †)
Mimachlamys cloacata (L.A. Reeve, 1853)
Mimachlamys cloacata curtisiana T. Iredale, 1939
Mimachlamys cloacata pelseneeri (P. Dautzenberg& A.R.J.B. Bavay, 1912)
Flexopecten coarctatus (I. von Born, 1778)
Chlamys coatsi (FOSSIL) F.S. MacNeil, 1967 †
Chesapecten coccymelus (FOSSIL) (W.H. Dall, 1898 †)
Adamussium cockburnensis (FOSSIL) H.A. Jonkers, 2003 †
Aequipecten cocoanus (FOSSIL) W.H. Dall, 1898 †
Leopecten cocosensis T.R. Waller, 2007
Euvola codercola (FOSSIL) G.F. Harris, 1927 †
Pecten coderensis (FOSSIL) G.F. Harris, 1927 †
Adamussium colbecki (Smith, 1902)
Nodipecten colinensis (FOSSIL) F. Hodson & F. Hodson,1927 †
Pecten collapsus (FOSSIL) White, 1887 †
Oppenheimopecten colpotus (FOSSIL) W.P. Woodring, 1982 †
Leochlamys columbiana (FOSSIL) Clark & R. Arnold, 1923 †
Aequipecten commutatus (T.A. de M. Monterosato,1875)
Aequipecten commutatus peripheralis H.H. Dijkstra& R.N. Kilburn, 2001
Chlamys comparalis (FOSSIL) (M. Tuomey & Holmes †)