Tellina carinulata (FOSSIL) J.B.P.A. Lamarck, 1806 †
Macoma carlottensis J.J.F. Whiteaves, 1880
Strigilla carnaria (C. Linnaeus, 1758)
Strigilla carnaria rombergii O.A.L. Mörch, 1853
Clathrotellina carnicolor (S.C.T. Hanley, 1846)
Macoma carolinensis (FOSSIL) Gardner & T.H. Aldrich,1919 †
Liothyris carolinensis (FOSSIL) T.A. Conrad, 1875 †
Tellina carpenteri (W.H. Dall, 1900)
Abranda casta (S.C.T. Hanley, 1844)
Angulus castacana (FOSSIL) Anderson & G.D. Hanna,1925 †
Temnoconcha cercadica (FOSSIL) (C.J. Maury, 1917 †)
Macoma cerina C.B. Adams, 1845
Psammotreta chakeensis (FOSSIL) (Cox 1927) †
Indotellina chariessa (A.E. Salisbury, 1934)
Tellina charlottae E.A. Smith, 1885
Macoma chejsliensis (FOSSIL) V.N. Sinelnikova, 1990 †
Tellina chevallieri (FOSSIL) A.E.M. Cossmann, 1886 †
Macomopsis chinensis (S.C.T. Hanley, 1845)
Tellinella chipolana (FOSSIL) W.H. Dall, 1900 †
Panacoma chiriquiensis (FOSSIL) A.A. Olsson, 1942 †
Laciolina chloroleuca (J.B.P.A. Lamarck, 1818)
Laciolina chloroleuca quoyi (G.B. Sowerby, 1868)
Tellina christovalis E.A. Smith, 1876
Strigilla chroma A.E. Salisbury, 1934
Tellina chrysogona W.H. Dall, 1908
Tellina chudeaui P. Dautzenberg
Eurytellina cibaoica (FOSSIL) C.J. Maury, 1917 †
Strigilla cicercula (R.A. Philippi, 1846)
Bathytellina citrocarnea J.T. Kuroda & T. Habe,1958
Tellina clathrata (G.P. Deshayes, 1835)
Bathyangulus claudia (J.C. Melvill & R. Standen,1907)
Macoma cleryana (A.V.M.D. D'Orbigny,1846)
Moerella cloneta (FOSSIL) W.H. Dall, 1900 †
Macoma coani A.I. Kafanov& K.A. Lutaenko, 1999
Moerella coani A.M. Keen, 1971