Chlamys chathamensis (FOSSIL) (F.W. Hutton, 1873 †) New Zealand, South Island
Euvola chazaliei (P. Dautzenberg, 1900) Columbia, Gulf of Columbia35 mm
Merklinia chihuahuensis (FOSSIL) (Bose 1910) †
Lindapecten chipolanus (FOSSIL) (W.H. Dall, 1898 †) Florida
Chlamys choctavensis (FOSSIL) T.H. Aldrich, 1895 † United States, Virginia, York
Chlamys chosenica J.T. Kuroda, 1932 Japan, Hyogo75 mm
Palliolum cibaoense (FOSSIL) Waller, 2011 † Dominican Republic, Valverde
Chlamys cinnabarina J.F. Bolten, 1798
Periclaraia circularis (FOSSIL) Li & Ding, 1981 † New Zealand, Canterbury, Waitaki
Chlamys clarkeana (FOSSIL) † United States, Alabama, Covington
Palliolum clathratum (E.C. Von Martens, 1881)
Camptochlamys clathratus (FOSSIL) F.A. Roemer, 1836 † China, Qoima Co
Pseudamussium clavatum (G.S. Poli, 1795) Italy, Anzio36 mm
Pseudamussium clavatum dumasii (B.C.M. Payraudeau, 1826) Portugal30 mm
Indopecten clignetti (FOSSIL) (Krumbeck, 1913 †) United Arab Emirates, Khor Fakkan
Placopecten clintonius (FOSSIL) (T. Say, 1824 †) USA, North Carolina, Pamlico
Mimachlamys cloacata (L.A. Reeve, 1853) Thailand, Samui Island104,4 mm
Mimachlamys cloacata curtisiana T. Iredale, 1939 Australia, Cooya31 mm
Mimachlamys cloacata pelseneeri (P. Dautzenberg& A.R.J.B. Bavay, 1912) Philippines, Cebu39 mm
Flexopecten coarctatus (I. von Born, 1778)
Chlamys coatsi (FOSSIL) F.S. MacNeil, 1967 † Eastern Kamchatka
Chesapecten coccymelus (FOSSIL) (W.H. Dall, 1898 †) USA, Maryland
Adamussium cockburnensis (FOSSIL) H.A. Jonkers, 2003 †
Aequipecten cocoanus (FOSSIL) W.H. Dall, 1898 † USA, Mississippi
Leopecten cocosensis T.R. Waller, 2007 Costa Rica, Cocos Island
Euvola codercola (FOSSIL) G.F. Harris, 1927 † Venezuela, Falcón
Pecten coderensis (FOSSIL) G.F. Harris, 1927 † Venezuela, Falcón
Adamussium colbecki (Smith, 1902) Ross Sea80,7 mm
Nodipecten colinensis (FOSSIL) F. Hodson & F. Hodson,1927 † Dominican Republic
Pecten collapsus (FOSSIL) White, 1887 † Brazil, Sergipe
Oppenheimopecten colpotus (FOSSIL) W.P. Woodring, 1982 † Panama
Leochlamys columbiana (FOSSIL) Clark & R. Arnold, 1923 †
Aequipecten commutatus (T.A. de M. Monterosato,1875) Spain, Malaga30 mm
Aequipecten commutatus peripheralis H.H. Dijkstra& R.N. Kilburn, 2001 South Africa, Zululand
Chlamys comparalis (FOSSIL) (M. Tuomey & Holmes †) Florida