Bearizia songoeensis (FOSSIL) (K. Martin, 1914 †)
Amalda southlandica (C.A. Fleming, 1948)
Eburna speciosa (FOSSIL) R.F. Rutsch, 1934 †
Amalda spinigera (FOSSIL) (P. Marshall, 1918 †)
Ancilla spissa (FOSSIL) M. Rouault, 1849 †
Olivula staminea (FOSSIL) (T.A. Conrad, 1832 †)
Olivula staminea maternae (FOSSIL) (K.V.W. Palmer, 1937 †)
Olivula staminea punctulifera (FOSSIL) W.M. Gabb, 1860 †
Olivula staminea reklawensis (FOSSIL) (Garvie, 1996 †)
Ancilla sticta R.N. Kilburn, 1981
Amalda stortha (FOSSIL) (Olson, 1956 †)
Ancilla studeri (FOSSIL) Hébert & Renevier, 1856 †
Turrancilla stupaeformis (FOSSIL) (C. Beets, 1942 †)
Ancilla suavis M. Yokoyama, 1926
Ancilla subampliata (FOSSIL) R. Tate, 1889 †
Ancilla subcanalifera (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Ancillista subgradata (FOSSIL) (R. Tate, 1889 †)
Amalda subhebera (FOSSIL) (J. Marwick, 1926 †)
Amalda subobesa (FOSSIL) A.L. Chavan, 1965 †
Ancilla sultana F. Boyer, 2015
Ancillina sumatrana (K.H.J. Thiele, 1925)
Amalda tankervillii (W.J. Swainson, 1825)
Baryspira tatei (FOSSIL) (J. Marwick, 1924 †)
Ancilla taylori R.N. Kilburn, 1981
Amalda telaaraneae R.N. Kilburn, 1993
Amalda tenuis T. Ninomiya, 1991
Turrancilla teschi (FOSSIL) (E.J. Koperberg, 1931 †)
Ancilla testudae (R.N. Kilburn, 1977)
Amalda tholiculus (FOSSIL) (J. Marwick, 1931 †)
Ancilla thomassini R.N. Kilburn, 1981
Amalda tindalli (J.C. Melvill, 1898)
Baryspira tirangiensis (FOSSIL) J. Marwick, 1926 †
Ancilla tornata (FOSSIL) A.E.M. Cossmann, 1903 †
Ancilla tournoueri (FOSSIL) A.E.M. Cossmann, 1919 †
Amalda trachyzonus R.N. Kilburn, 1975