Graphidula cancellata (FOSSIL) (B. Wade, 1926 †)
Latirus candelabrum (L.A. Reeve, 1847)
Amiantofusus candoris K. Fraussen, Y.I. Kantor& R. Hadorn, 2007
Aurantilaria cantaurana (FOSSIL) B.M. Landau& G.J. Vermeij, 2014 †
Peristernia canthariformis J.C. Melvill, 1891
Fusinus caparti W. Adam & J. Knudsen,1955
Fasciolaria capelettii (FOSSIL) E.J. Petuch, 1994 †
Fusinus capelettii (FOSSIL) E.J. Petuch, 1994 †
Granulifusus captivus (E.A. Smith, 1889)
Leucozonia caribbaea (FOSSIL) N.E. Weisbord, 1962 †
Microfulgur carinatus W.F. Ponder, 1970
Hemipolygona carinifera (J.B.P.A. Lamarck, 1816)
Peristernia carlajoostae M. Lussi, 2014
Fasciolaria carminamaris (FOSSIL) C.J. Maury, 1917 †
Heilprinia carolinensis (FOSSIL) (W.H. Dall, 1892 †)
Peristernia carotiana (C.M. Tapparone-Canefri,1880)
Latirus carpentariensis C. Hedley, 1912
Hemipolygona carrizalensis (FOSSIL) B.M. Landau& G.J. Vermeij, 2012 †
Amiantofusus cartilago K. Fraussen, Y.I. Kantor& R. Hadorn, 2007
Fusinus carvalhoriosi O. Macsotay & B. Campos,2001
Latirus castaneus (J.E. Gray, 1839)
Peristernia castanoleuca C.M. Tapparone-Canefri,1879
Glaphyrina caudata (J.R.C. Quoy& J.P. Gaimard, 1833)
Dolicholatirus cayohuesonicus (G.B. II Sowerby, 1878)
Dolicholatirus celinamarumai S. Kosuge, 1981
Hemipolygona centrifuga (W.H. Dall, 1915)
Fasciolaria cepporum (FOSSIL) L.M.D. Bellardi, 1884 †
Lamellilatirus ceramidus (W.H. Dall, 1889)
Leucozonia cerata (W. Wood, 1828)
Dolicholatirus cervicrassus (FOSSIL) D.T. Dockery, 1984 †
Fusinus chehalisensis (FOSSIL) (C.S. Weaver, 1912 †)
Streptochetus cheruscus (FOSSIL) (P. Nyst, 1843 †)
Streptochetus cheruscus elongatus (FOSSIL) (P. Nyst, 1843 †)
Conradconfusus chesapeakensis (FOSSIL) (E.J. Petuch, 1988 †)
Peristernia chlorostoma (G.B. I Sowerby, 1825)