Gadila sauridens (R.B. Watson, 1879)
Cadulus scarabinoi G. Steiner & A. Kabat,2004
Bathycadulus segonzaci V. Scarabino, C.H. Caetano& A. Carranza, 2011
Gadila senegalensis (É.A.A. Locard, 1898)
Cadulus siberutensis S.G.A. Jaeckel, 1932
Cadulus simillimus R.B. Watson, 1879
Gadila simpsoni J. Henderson, 1920
Gadila singaporensis B. Sharp & H.A. Pilsbry,1898
Cadulus sofiae V. Scarabino, 1995
Polyschides spectabilis (A.E. Verrill, 1885)
Gadilopsis spiniformis (FOSSIL) Gardner, 1947 †
Dischides splendens B.K. Raines, 2002
Gadila spreta (R. Tate & W.L. May,1900)
Gadila strangulata (É.A.A. Locard, 1897)
Gadila striata (H.A. Pilsbry & B. Sharp,1898)
Gadila subcolubridens (N.H. Ludbrook, 1954)
Cadulus subfusiformis (G.O. Sars, 1865)
Dischides subpolitus (FOSSIL) (A.E.M. Cossmann& M.A. Peyrot, 1916 †)
Gadila subtilis H.P. Plate, 1908
Gadila subula (J. Henderson, 1920)
Siphonodentalium summa (T.A. Okutani, 1964)
Polyschides sutherlandi K.L. Lamprell & J.M. Healy,1998
Cadulus teliger H.J. Finlay, 1926
Cadulus tersus J. Henderson, 1920
Polyschides tetraschistus (R.B. Watson, 1879)
Polyschides tetrodon (H.A. Pilsbry & B. Sharp,1898)
Cadulus thallus (FOSSIL) (T.A. Conrad, 1834 †)
Cadulus thielei H.P. Plate, 1908
Gadila tolmiei (W.H. Dall, 1897)
Cadulus transitorius J. Henderson, 1920
Cadulus tumidosus J.G. Jeffreys, 1877
Siphonodentalium tytthum R.B. Watson, 1879
Cadulus unilobatus V. Scarabino & F. Scarabino,2011
Cadulus valdiviae S.G.A. Jaeckel, 1932
Gadila vanuatuensis V. Scarabino, 2008