Modiolus bipartitus (FOSSIL) Sowerby, 1818 †
Gibbomodiola biradiata (S.C.T. Hanley, 1843)
Brachidontes blakeanus (J.C. Melvill & R. Standen,1914)
Brachidontes blanckenhorni (FOSSIL) El Qot, 2006 †
Modiolus blanfordi (FOSSIL) Weir, 1929 †
Modiolus bolodekensis (FOSSIL) Voronetz, 1938 †
Bathymodiolus boomerang R. von Cosel & K. Olu,1998
Promytilus borealis (FOSSIL) Kurushin, 1989 †
Crenella bourdoti (FOSSIL) A.E.M. Cossmann, 1904 †
Bathymodiolus brevior R. von Cosel, B. Métivier& J. Hashimoto, 1994
Mytilus brewsterensis (FOSSIL) Hassan, 1953 †
Brachidontes brochii (FOSSIL) G.P. Deshayes, 1866 †
Bathymodiolus brooksi R.G. Gustafson, R.D. Turner, R.A. Lutz& R.C. Vrijenhoek, 1998
Modiolus buckmani (FOSSIL) Rollier, 1914 †
Solamen bulla (R.W. Dunker, 1857)
Perna burdigalensis (FOSSIL) A.E.M. Cossmann& M.A. Peyrot, 1914 †
Mytilus bussoni (FOSSIL) M. Collignon, 1971 †
Musculus calceatus (J.C. Melvill & R. Standen,1907)
Lithophaga calcifer T. Iredale, 1939
Mytilus californianus T.A. Conrad, 1837
Adula californiensis (R.A. Philippi, 1847)
Perna canaliculus (J.F. Gmelin, 1791)
Lithophaga canalifera (S.C.T. Hanley, 1843)
Rhomboidella canariensis (N.H. Odhner, 1932)
Promytilus cancellatus (FOSSIL) P.A. Maxwell, 1964 †
Mytilus canoasensis (FOSSIL) A.A. Olsson, 1931 †
Modiolus capax T.A. Conrad, 1837
Arcuatula capensis (C.F.F. von Krauss, 1848)
Aulacomya capensis (R.W. Dunker, 1846)
Rhomboidella capensis K.H.J. Thiele& S.G.A. Jaeckel, 1931
Lithophaga caperata (R.A. Philippi, 1849)
Arcoperna capillaris (FOSSIL) (G.P. Deshayes, 1858 †)
Leiosolenus carmenae (R. von Cosel, 1995)
Modiolus carpenteri T. Soot-Ryen, 1963
Modiolus carvalhoi M.A. Klappenbach, 1966