Modiolus stultorum (F.P. Jousseaume, 1893) Guinea Bissau44 mm
Lithophaga subalveata (FOSSIL) T.A. Conrad, 1866 † USA, New Jersey, Cumberland
Modiolula subangulata (FOSSIL) (G.P. Deshayes, 1858 †) France, Paris Basin
Modiolus subangustissimus (FOSSIL) Dacque, 1905 † Ethiopia, Oromia, Misraq Harerge
Lithophaga subattenuata (K.H. Kleemann& P. Maestrati, 2012) Philippines, Balicasag Island13 mm
Modiolus subcarinatus (FOSSIL) J.B.P.A. Lamarck, 1805 † France, Paris Basin
Lithophaga subcordata (FOSSIL) (Orbigny, 1850 †) France, Aquitaine
Modiolus subdirectus (FOSSIL) L. Krishtofovich † Western Kamchatka
Stavelia subdistorta (C.A. Récluz, 1852) Philippines, Mactan Island143 mm
Lithophaga subelliptica (FOSSIL) Sayre, 1931 † USA, New Mexico, Lincoln
Volsellina subelliptica (FOSSIL) (F.B. Meek, 1867 †) USA, Kansas, Greenwood
Solamen subfornicatum (FOSSIL) (Nagao) †
Aulacomya subfragilis (FOSSIL) (A.V.M.D. D'Orbigny,1847 †) Belgium
Lithophaga sublithophagus (FOSSIL) d'Orbigny, 1850 † France, Paris Basin
Mytilus submenkeanus (FOSSIL) R. Tate, 1886 †
Lecompteus subornatus (FOSSIL) (Etallon 1859) †
Modiolus subparallela (FOSSIL) (Portlock) † Ireland
Mytilus subpectinatus (FOSSIL) D'Orbigny, 1850 † Ethiopia, Oromia, Misraq Harerge
Musculus subpictus (F.J. Cantraine, 1835) Italy, Viareggio21 mm
Mytilus subpygmaeus (FOSSIL) d'Orbigny, 1849 †
Brachidontes subramosus (S.C.T. Hanley, 1843) Tasmania
Musculus subrostratus (FOSSIL) G.P. Deshayes, 1858 † France, Paris Basin
Modiolus subsimplex (FOSSIL) (A.V.M.D. D'Orbigny,1850 †) Argentina, Neuquen
Brachidontes subsulcatus (R.W. Dunker, 1857)
Modiolus sulcatus (FOSSIL) J.B.P.A. Lamarck 1805 †
Musculus svecicus (O. Fabricius, 1788) Alaska, Nunivak Island
Promytilus swallovi (FOSSIL) (McChesney, 1860 †)
Sinomytilus swinhoei (H. Adams, 1870)
Bathymodiolus taiwanensis R. von Cosel, 2008
Bathymodiolus tangaroa R. von Cosel& B.A. Marshall, 2003 Canada, Quebec, Anticosti Island
Botula tatei M. Huber, 2010 Western Australia
Gibbomodiola taurarcuata (FOSSIL) F. Sacco, 1898 †
Musculus taylori (W.H. Dall, 1897) America
Mytilus tener (FOSSIL) Devjatilova, 1981 † Western Kamchatka
Modiolus tenuiradiatus (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1914 † France, Aquitaine40 mm