Calliostoma cnidophilum J.F. Quinn, 1992
Calliostoma cochlias C. Vilvens, 2009
Photinula coerulescens (P.P. King & W.J. Broderip,1832)
Bruceina cognata (B.A. Marshall, 1988)
Calliostoma columnarium C. Hedley & W.L. May,1908
Calliostoma comptum (A. Adams, 1855)
Calliostoma connyae G.T. Poppe, S.P. Tagaro& C. Vilvens, 2014
Calliostoma conradi (FOSSIL) Gardner, 1948 †
Calliostoma consimile (E.A. Smith, 1881)
Fautor consobrinus A.W.B. Powell, 1958
Tristichotrochus consors (C.E. Lischke, 1872)
Calliostoma contextum (FOSSIL) G. Seguenza, 1885 †
Calliostoma conuliforme (FOSSIL) G. Seguenza, 1885 †
Calliostoma conulus (C. Linnaeus, 1758)
Calliostoma coppingeri (E.A. Smith, 1880)
Calliostoma coppingeri major Z.J.A. De Castellanos& C. Fernández
Bathyfautor coriolis B.A. Marshall, 1995
Falsimargarita coriolis B.A. Marshall, 2016
Falsimargarita coronata (J.F. Quinn, 1992)
Carinastele coronata B.A. Marshall, 1988
Maurea correlata (FOSSIL) C.A. Fleming, 1943 †
Otukaia covacevichi (FOSSIL) C. Nielsen & al., 2004 †
Calliostoma cragini (FOSSIL) Stanton, 1947 †
Calliostoma crassicostatum M.M. Schepman, 1908
Photinula crawshayi E.A. Smith, 1905
Margarella crebrilirulata (E.A. Smith, 1907)
Benthastelena cristata (B.A. Marshall, 1995)
Tristichotrochus crossleyae (E.A. Smith, 1910)
Otukaia crustulum C. Vilvens & J. Sellanes,2006
Calliostoma cubanum W.J. Clench & C.G. Aguayo,1940
Calliostoma cubense J.F. Quinn, 1992
Calliostoma debile J.F. Quinn, 1992
Calliostoma decamposi (FOSSIL) C.J. Maury, 1924 †
Laetifautor deceptus (E.A. Smith, 1899)
Calliostoma decipiens R.J.L. Guppy, 1867