Mercenaria gardnerae (FOSSIL) Kellum, 1926 †
Mercenaria hartae E.J. Petuch, 2013
Mercenaria langdoni (FOSSIL) W.H. Dall, 1900 †
Mercenaria mercenaria (C. Linnaeus, 1758)
Mercenaria mercenaria notata T. Say, 1822
Mercenaria nannodes (FOSSIL) Gardner, 1947 †
Mercenaria plena (FOSSIL) T.A. Conrad, 1869 †
Mercenaria prodroma (FOSSIL) Gardner, 1947 †
Mercenaria stimpsoni (FOSSIL) G.P. Deshayes, 1863 †
Mercenaria stimpsoni (A.A. Gould, 1861)
Mercenaria texana (W.H. Dall, 1902)
Placamen altum (G.B. II Sowerby, 1853)
Placamen berrii (W. Wood, 1828)
Placamen chloroticum (R.A. Philippi, 1849)
Placamen flindersi B.C. Cotton & F.C. Godfrey,1938
Placamen foliaceum (R.A. Philippi, 1846)
Placamen gilvum (R.A. Philippi, 1849)
Placamen gravescens (K.T. Menke, 1843)
Placamen isabellina (R.A. Philippi, 1849)
Placamen lamellatum (P.F. Röding, 1798)
Placamen lamellatum calophyllum (R.A. Philippi, 1846)
Placamen lamellosum (G.B. I Sowerby, 1825)
Placamen morgani (FOSSIL) (J. Marwick, 1924 †)
Placamen placidum (R.A. Philippi, 1844)
Placamen retroversum (G.P. Deshayes, 1853)
Placamen roseotinctum (W. Bairdin G.A. Brenchley, 1873)
Protocallithaca adamsi (L.A. Reeve, 1863)
Puberella crenata (J.F. Gmelin, 1791)
Puberella intapurpurea (T.A. Conrad, 1849)
Tawera assimilis (FOSSIL) (F.W. Hutton, 1873 †)
Tawera australiana M. Huber, 2010
Tawera bartrumi (FOSSIL) J. Marwick, 1927 †
Tawera carri (FOSSIL) (J. Marwick, 1927 †)
Tawera coelata (K.T. Menke, 1843)