Aequipecten comparilis (FOSSIL) (M. Tuomey & Holmes,1855 †)
Pecten complanatus (FOSSIL) J. de C. Sowerby, 1828 †
Lyriochlamys complexicostata (FOSSIL) (W.M. Gabb, 1869 †)
Yabepecten condoni (FOSSIL) (Hertlein 1925) †
Nodipecten condylomatus (FOSSIL) W.H. Dall, 1912 †
Talochlamys contorta H.H. Dijkstra, 1993
Mesopeplum convexum (J.R.C. Quoy, 1835)
Chlamys cookei (FOSSIL) Kellum, 1926 †
Patinopecten coosensis (FOSSIL) (Shumard, 1858 †)
Neithea coquandi (FOSSIL) (F. Péron, 1877 † †)
Loxochlamys corallina (FOSSIL) Waller 2005 †
Bractechlamys corallinoides (A.V.M.D. D'Orbigny,1840)
Hinnites corallinus G.B. I Sowerby, 1827
Pecten coralliphila (FOSSIL) A.A. Olsson, 1922 †
Austrohinnites corioensis (FOSSIL) (McCoy, 1879 †)
Lentipecten corneus (FOSSIL) (Sowerby, 1818 †)
Lentipecten corneus coxi (FOSSIL) M. Glibert & Poel, 1965 †
Hinnites cortesyi J.L.M. Defrance, 1821
Chlamys corteziana (FOSSIL) J.W. Durham, 1950 †
Pascahinnites coruscans (R.B. Hinds, 1845)
Pascahinnites coruscans hawaiensis (W.H. Dall, P. Bartsch& H.A. Rehder, 1938)
Chlamys cosibensis (FOSSIL) M. Yokoyama, 1911 †
Pecten cossmanni (FOSSIL) A. von Koenen, 1893 †
Mesopeplum costatostriatum (FOSSIL) (P. Marshall, 1918 †)
Juxtamusium coudeini (A.R.J.B. Bavay, 1903)
Chesapecten covepointensis (FOSSIL) Ward, 1992 †
Indoweyla coxi (FOSSIL) Fursich& Heinze in Jaitly & al. 1995 †
Leptopecten cracens (FOSSIL) Olsson 1964 †
Mirapecten cranmerorum (T.R. Waller, 1986)
Lyropecten crassicardo (FOSSIL) (T.A. Conrad, 1856 †)
Mimachlamys crassicostata (G.B. II Sowerby, 1842)
Argopecten crassiradiatus (FOSSIL) Clark, 1915 †
Delectopecten crassistriatus A.G. Beu & T.A. Darragh,2001
Gloripallium crassivenium (FOSSIL) (Yokoyama, 1929 †)
Mesopeplum crawfordi (FOSSIL) (F.W. Hutton, 1873 †)