Eratoidea costata (L. Bozzetti, 1997)
Eratoidea costatulata (K.H.J. Thiele, 1925)
Eratoidea costulata (K.H.J. Thiele, 1925)
Alaginella cottoni F. Boyer, 2001
Mesoginella coxi (FOSSIL) (J. Marwick, 1928 †)
Mesoginella cracens (R.K. Dell, 1956)
Granulina crassa C. Smriglio, F. Gubbioli& P. Mariottini, 2000
Dentimargo crenulata (FOSSIL) (G.P. Deshayes, 1865 †)
Volvarina criolla J. Espinosa & J.A. Ortea,2003
Serrata critha (FOSSIL) J. Gardner, 1937 †
Marginella croceus S.G. Veldsman, 2015
Marginella croukampi B. Hayes, 1996
Dentimargo cruzmoralai J. Espinosa & J.A. Ortea,2000
Granulina crystallina C. Smriglio, F. Gubbioli& P. Mariottini, 2000
Volvarina cubana J. Espinosa & J.A. Ortea,2015
Prunum cubanum H. Sarasúa & J. Espinosa,1977
Hyalina cubensis J. Espinosa & J.A. Ortea,1999
Marginella culleni (FOSSIL) A. Dey, 1961 †
Volvarina curazaoensis J. Espinosa & J.A. Ortea,2013
Prunum curtum (G.B. I Sowerby, 1832)
Volvarina cybelesae J. Espinosa & J.A. Ortea,2015
Balanetta cylichnella (W.L. May, 1918)
Marginella cylindracea (FOSSIL) (G.P. Deshayes, 1865 †)
Serrata cylindrata F. Boyer, 2008
Granulinopsis cylindrata (F. Boyer & E. Rolán,2004)
Hyalina cylindrica (G.B. II Sowerby, 1846)
Marginella cypraeaeformis (FOSSIL) S. Nardini, 1934 †
Hydroginella cypraeaformis F. Boyer, 2015
Cypraeolina dacria (FOSSIL) (W.H. Dall †)
Cryptospira dactylus (J.B.P.A. Lamarck, 1822)
Dentimargo dalli (FOSSIL) E.J. Petuch, 1997 †
Marginella dalli (FOSSIL) Bose, 1906 †
Volvarina dalli A. Wakefield & T. McCleery,2005
Marginella dalliana (FOSSIL) C.J. Maury, 1912 †
Prunum dallianum (FOSSIL) C.J. Maury, 1912 †