Tritonoharpa coxi (J.W. Brazier, 1872)
Turehua crassispiralis (FOSSIL) A.G. Beu & P.A. Maxwell,1987 †
Cancellaria crassistriata (FOSSIL) Wood, 1879 †
Cancellaria crawfordiana W.H. Dall, 1891
Africotriton crebriliratus (G.B. III Sowerby, 1903)
Cancellaria cremata R.B. Hinds, 1843
Scalptia crenifera (G.B. I Sowerby, 1832)
Cancellaria crenulata A. Adams, 1855
Unitas crenulata (FOSSIL) (G.P. Deshayes, 1835 †)
Admete crispa H.P.C. Møller, 1842
Scalptia crispa (G.B. I Sowerby, 1832)
Scalptia crispatoides A. Verhecken, 2008
Trigonostoma crispatum J. de C. Sowerby, 1855
Waipaoa cristata (FOSSIL) (J. Marwick, 1926 †)
Scalptia crossei (C.G. Semper, 1861)
Cancellaria crossletensis (FOSSIL) Covacevich& D. Frassinetti, 1986 †
Massyla cubaguaensis B.M. Landau & al., 2007
Tritonoharpa cubapatriae (H. Sarasúa, 1975)
Brocchinia culminata (FOSSIL) A.G. Beu, 1970 †
Massyla cumingiana (S.A.A. Petit De La Saussaye, 1844)
Nipponaphera cyphoma P. Bouchet & R.E. Petit,2002
Trigonostoma damasoi T. Cossignani, 2015
Unitas danieli (FOSSIL) (L.J. Morlet, 1885 †)
Bivetiella dariena (FOSSIL) (F. Toula, 1908 †)
Cancellaria darwini R.E. Petit, 1970
Cancellaria dautzenbergi (FOSSIL) A.E.M. Cossmann, 1896 †
Brocchinia decapensis (K.H. Barnard, 1960)
Narona decaptyx (FOSSIL) J. Brown & H.A. Pilsbry,1911 †
Trigonostoma decorara (FOSSIL) R.B. Newton, 1922 †
Cancellaria decussata G.B. I Sowerby, 1832
Cancellaria defuniak (FOSSIL) Gardner, 1947 †
Unitas delecta (FOSSIL) (G.P. Deshayes, 1864 †)
Oamaruia deleta (FOSSIL) H.J. Finlay, 1930 †
Nothoadmete delicatula (E.A. Smith, 1907)
Inglisella delli (FOSSIL) (A.G. Beu, 1970 †)