| Abra Lamarck, 1818 |
| Abra aequalis (Say, 1822) |
| Abra californica Knudsen, 1970 |
| Abra lioica (Dall, 1881) |
| Abra longicallus (Scacchi, 1835) |
| Abra longicallus subsp. americana Verrill & Bush, 1898 |
| Abra pacifica Dall, 1915 |
| Abra palmeri Dall, 1915 |
| Abra protextus (Conrad, 1841) |
| Abra tepocana Dall, 1915 |
| Amphidesma Lamarck, 1818 |
| Amphidesma aequale Say, 1822 |
| Amphidesma bellastriata Conrad, 1837 |
| Amphidesma bicolor C. B. Adams, 1852 |
| Amphidesma californica Reeve, 1853 |
| Amphidesma decisa Conrad, 1837 |
| Amphidesma flavescens Gould, 1851 |
| Amphidesma formosum G. B. Sowerby I, 1833 |
| Amphidesma jovis Reeve, 1853 |
| Amphidesma laeve G. B. Sowerby I, 1833 |