Polidevcia browni (FOSSIL) (A. Thomas, 1928 †)
Nuculana bushiana (A.E. Verrill, 1884)
Saccella calkinsi (FOSSIL) (E.W.J. Moore, 1963 †)
Jupiteria callimene (W.H. Dall, 1908)
Nuculana caloundra T. Iredale, 1929
Saccella canonica (FOSSIL) (W.H. Dall, 1890 †)
Propeleda carpenteri (W.H. Dall, 1881)
Saccella catasarca (FOSSIL) †
Nuculana caudata (E. Donovan, 1801)
Nuculana cellulita (W.H. Dall, 1896)
Portlandella cerussata (FOSSIL) Slodkewitsch, 1938 †
Nuculana cestrota (W.H. Dall, 1890)
Nuculana chahalisensis (FOSSIL) (C.S. Weaver †)
Nuculana chapmani (FOSSIL) Finlay, 1924 †
Saccella charanica (FOSSIL) A.A. Olsson, 1931 †
Dacromya chetaensis (FOSSIL) Sanin, 1976 †
Saccella chinaensis (FOSSIL) Ilyina, 1954 †
Saccella chiriquiana (FOSSIL) A.A. Olsson, 1942 †
Gonioleda chobaiensis (FOSSIL) Vukhuc & Huyen 1984 †
Pseudoportlandia clara (FOSSIL) (R.J.L. Guppy, 1873 †)
Nuculana claviformis (FOSSIL) Sowerby, 1824 †
Comitileda clifdenensis (FOSSIL) (Powell, 1935 †)
Nuculana cliftonensis (FOSSIL) (Clark & Martin, 1901 †)
Nuculana cochlearella (FOSSIL) A.E.M. Cossmann, 1883 †
Nuculana coelata (FOSSIL) T.A. Conrad, 1833 †
Nuculana coelatella (FOSSIL) †
Glyptoleda coleyi (FOSSIL) E.M. Fletcher, 1945 †
Nuculana comita (B.C. Cotton& F.C. Godfrey, 1938)
Saccella commutata (R.A. Philippi, 1844)
Calorhadia compsa (FOSSIL) †
Litorhadia compsa (FOSSIL) (W.M. Gabb, 1860 †)
Jupiteria concava (FOSSIL) (H.G. Bronn, 1831 †)
Nuculana concentrica (T. Say, 1824)
Zealeda concentrica (FOSSIL) J. Marwick, 1931 †
Ledella confinis (E.A. Smith, 1885)