Samarangia quadrangularis (A. Adams & L.A. Reeve,1850)
Petricola quadrasi (J.G. Hidalgo, 1886)
Venus quadrata (FOSSIL) G.P. Deshayes, 1857 †
Dosinia queenslandica J.M. Healy & K.L. Lamprell,1992
Gomphina queenslandica (M. Huber, 2010)
Pitar queenslandicus K.L. Lamprell & J.M. Healy,1997
Loxo quintense (FOSSIL) L.R. Saul, 1993 †
Aphrodina quintucoensis (FOSSIL) (C.S. Weaver, 1931 †)
Pitar quirosanus (FOSSIL) F. Hodson, 1927 †
Lirophora quirosensis (FOSSIL) F. Hodson, 1927 †
Circe quoyi (S.C.T. Hanley, 1844)
Chamelea radiata (FOSSIL) (G.B. Brocchi, 1814 †)
Periglypta rawesi (FOSSIL) (Hislop, 1859 †)
Marcia recens (H.S. Holten, 1802)
Marcia recens marmorata (J.B.P.A. Lamarck, 1818)
Pullastra recondita (FOSSIL) Phillips, 1829 †
Pitar rectodorsalis K.L. Lamprell& R.N. Kilburn, 1999
Meretrix reeveana (J.G. Hidalgo, 1903)
Pitar reeveanum J.G. Hidalgo, 1903
Irus reflexus (J.E. Gray, 1843)
Costellipitar regularis (E.A. Smith, 1885)
Tivela rejecta E.A. Smith, 1914
Macrocallista rekinnensis (FOSSIL) V.N. Sinelnikova, 1990 †
Macrocallista reposta (FOSSIL) (T.A. Conrad, 1834 †)
Antigona resticulata (G.B. II Sowerby, 1853)
Clementia restinensis (FOSSIL) A.A. Olsson, 1928 †
Leukoma restorationensis (D.L. Frizzell, 1930)
Periglypta reticulata (C. Linnaeus, 1758)
Placamen retroversum (G.P. Deshayes, 1853)
Chione retugida (FOSSIL) W.P. Woodring, 1925 †
Callista reussi (FOSSIL) (Speyer, 1866 †)
Periglypta rhaetica (FOSSIL) (Henry, 1876 †)
Protapes rhamphodes (P.G. Oliver & E.A. Glover,1996)
Polititapes rhomboides (T. Pennant, 1777)
Lioconcha richerdeforgersi K.L. Lamprell & J. Stanisic,1996