| Brachidontes exustus (Linnaeus, 1758) |
| Brachidontes modiolus (Linnaeus, 1767) |
| Brachidontes playasensis (Pilsbry & Olsson, 1935) |
| Brachidontes recurvum (Rafinesque, 1820) |
| Brachidontes semilaevis (Menke, 1848) |
| Brachidontinae Nordsieck, 1969 |
| Brachydontes Gray, 1847 |
| Brachydontes granosissimus G. B. Sowerby III, 1914 |
| Choromytilus Soot-Ryen, 1952 |
| Choromytilus palliopunctatus (P. P. Carpenter, 1857) |
| Crenella T. Brown, 1827 |
| Crenella coarctata P. P. Carpenter, 1857 |
| Crenella columbiana Dall, 1897 |
| Crenella decussata (Montagu, 1808) |
| Crenella divaricata (d' Orbigny, 1853) |
| Crenella divaricata Yokoyama, 1922 |
| Crenella glandula (Totten, 1834) |
| Crenella inflata P. P. Carpenter, 1864 |
| Crenella megas Dall, 1902 |
| Crenellinae J. E. Gray, 1840 |