Ranularia boschi (R.T. Abbott & H. Lewis,1970)
Charonia bourdoti (FOSSIL) (A.E.M. Cossmann, 1897 †)
Biplex bozzettii A.G. Beu, 1998
Fusitriton brasiliensis T. Cossignani& V. Cossignani, 2003
Charonia buccinoides (FOSSIL) Martin, 1879 †
Charonia bureaui (FOSSIL) (A.E.M. Cossmann, 1897 †)
Ranella cancellata (FOSSIL) J.P.S. Grateloup, 1840 †
Sassia carlea (FOSSIL) D.T. Dockery, 1993 †
Reticutriton carlotate (FOSSIL) (A. Ferreira & da Cunha,1957 †)
Sassia carmenensis (FOSSIL) Clark & J.W. Durham,1946 †
Argobuccinum casus (FOSSIL) B.F. Kensley & Pether,1986 †
Linatella caudata (J.F. Gmelin, 1791)
Ranularia caudata (J.F. Gmelin, 1791)
Cymatium cecilianum (FOSSIL) W.H. Dall, 1916 †
Monoplex cercadicus (FOSSIL) C.J. Maury, 1917 †
Gyrineum cfmarginatum (J.F. Gmelin, 1790)
Ranella chilena (FOSSIL) A.G. Beu, 2010 †
Monoplex chlorostomoides (FOSSIL) C.J. Maury, 1924 †
Linatella cingulatum (J.F. Gmelin, 1791)
Sassia ciofali (FOSSIL) (Gregorio, 1880 †)
Charonia clifdenensis Marshall & Murdoch 1923
Septa closeli (A.G. Beu, 1987)
Sassia colubrina (FOSSIL) (J.B.P.A. Lamarck,1803 †)
Cymatiella columnaria (C. Hedley & W.L. May,1908)
Monoplex comptus (A. Adams, 1855)
Gyrineum concinnum (R.W. Dunker, 1862)
Charonia connectens (FOSSIL) Wood, 1872 †
Sassia conradiana (FOSSIL) (T.H. Aldrich, 1885 †)
Monoplex corrugatus (J.B.P.A. Lamarck, 1816)
Crassicymatium crassicordatum (FOSSIL) A.G. Beu, 2010 †
Sassia crassicostatus (FOSSIL) R. Tate, 1888 †
Charonia cribrosus (FOSSIL) R. Tate, 1888 †
Sassia cuneata (FOSSIL) A.E.M. Cossmann, 1885 †
Gyrineum cuspidatum (L.A. Reeve, 1844)
Cabestana cutacea (C. Linnaeus, 1767)