Mesosaccella rogovi (FOSSIL) Hryniewicz & al., 2014 †
Portlandella rosa (FOSSIL) (G.D. Hanna, 1927 †)
Nuculana rostellata (FOSSIL) T.A. Conrad, 1841 †
Nuculana rostratruncata (FOSSIL) Gardner, 1916 †
Phestia rugodorsata (FOSSIL) Easton, 1962 †
Phestia sabattinae (FOSSIL) Pagani, 2004 †
Nuculana sadoensis T. Habe, 1961
Nuculana sakhalinensis (FOSSIL) (L. Krishtofovich,1964 †)
Ledella sandersi Z.A. Filatova& A.A. Schileyko, 1984
Lamellileda sandersi F.R. Bernard, 1989
Litorhadia santaanai (FOSSIL) Gardner, 1945 †
Nuculana scalata B. Prashad, 1932
Adrana scaphoides H.A. Rehder, 1939
Nuculana scarburgensis (FOSSIL) Cox & Arkell †
Propeleda schmidti (FOSSIL) L. Krishtofovich, 1964 †
Nuculana sculpta (A. Issel, 1869)
Nuculana seeleyi (FOSSIL) (Gardner) †
Adrana seguinensis (FOSSIL) Garvie, 2013 †
Saccella sematensis (M. Suzuki & Ishizuka,1943)
Calorhadia semen (FOSSIL) (Lea, 1883 †)
Multidentata semenovi (FOSSIL) (Pronina, 1980 †)
Saccella semibistriata (FOSSIL) F.E. Eames, 1951 †
Nuculana semicrenulata (FOSSIL) C.T. Trechmann, 1918 †
Saccella semiteres (FOSSIL) (F.W. Hutton, 1877 †)
Lamellileda sibogaensis (B. Prashad, 1932)
Nuculana sibogai B. Prashad, 1932
Nuculana silicula (K.H.J. Thiele& S.G.A. Jaeckel, 1931)
Saccella silvestris (FOSSIL) (Cotter, 1923 †)
Ledella similis J.A. Allen & G. Hannah,1989
Glyptoleda simplicata (FOSSIL) C.O. Waterhouse, 1964 †
Saccella sinelnikovae (FOSSIL) A.I. Kafanov, 2002 †
Nuculana sinensis F.S. Xu, 1984
Phestia sinuata (FOSSIL) (Dembskaja, 1972 †)
Dacryomya skorochodi (FOSSIL) Kiparisova, 1938 †
Nuculana slodkewitschi (FOSSIL) Slodkewitsch,1938 ex Kogan MS †