Leporimetis rostellata (FOSSIL) (Clark, 1918 †)
Tellina rostralina (FOSSIL) G.P. Deshayes, 1825 †
Tellina rostralis (FOSSIL) J.B.P.A. Lamarck, 1806 †
Tellina rostrata (C. Linnaeus, 1758)
Tellina rousi G.B. III Sowerby, 1892
Tellinella rovala (FOSSIL) A.A. Olsson, 1922 †
Tellina rubella G.P. Deshayes, 1855
Tellina rubescens (S.C.T. Hanley, 1844)
Tellina rubicincta A. Römer, 1870
Tellina ruderata (FOSSIL) G.P. Deshayes, 1857 †
Moerella rutila (R.W. Dunker, 1860)
Atlantella ryalli M. Huber, A. Langleit& K. Kreipl, 2015
Tellina saccularia A.A. Gould, 1861
Tellina sacyi (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1910 †
Tellina sadeghianae (E.V. Coan& P.H. Valentich-Scott, 2010)
Megangulus sakhalinensis (FOSSIL) (L.S. Zhidkova, 1972 †)
Aeretica salisburyi (FOSSIL) Glibert & van de Poel 1967 †,
Moerella salmonea (FOSSIL) (Carpenter, 1864 †)
Nelltia salsa (FOSSIL) Saul, 1973 †
Tellina sandix (K.J. Boss, 1968)
Exotica sanguinealba (FOSSIL) (M. Huber, A. Langleit& K. Kreipl, 2015 †)
Psammotreta sanguinolenta (G.P. Deshayes, 1855)
Arcopagia saucatsensis (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1910 †
Tellina saucatsensis (FOSSIL) É.A. Benoist in A.E.M. Cossmann& M.A. Peyrot, 1910 †
Macaliopsis scalaroides (FOSSIL) (J.B.P.A. Lamarck,1806 †)
Indentina scalpellum (S.C.T. Hanley, 1844)
Macoma scarlatoi (FOSSIL) A.I. Kafanov& K.A. Lutaenko, 1997 †
Macoma schultzei K.H.J. Thiele, 1910
Tellina scitula (FOSSIL) W.H. Dall, 1900 †
Merisca sclera (FOSSIL) (Woodring 1925) †
Scutarcopagia scobinata (C. Linnaeus, 1758)
Scutarcopagia scobinata delicatula R. Selli, 1973
Pharaonella scripta (C. Linnaeus, 1758)
Macoma secta (T.A. Conrad, 1837)
Macoma sectior (K. Oyama, 1950)