| Family | Genus | Species |
|---|---|---|
| Anatinellidae | 1 | 2 |
| Arcticidae | 1 | 1 |
| Chamidae | 3 | 30 |
| Cyrenidae | 6 | 503 |
| Glauconomidae | 1 | 8 |
| Glossidae | 1 | 1 |
| Kelliellidae | 1 | 2 |
| Mactridae | 15 | 49 |
| Mesodesmatidae | 8 | 13 |
| Neoleptonidae | 1 | 3 |
| Petricolidae | 2 | 8 |
| Sphaeriidae | 9 | 256 |
| Trapezidae | 2 | 16 |
| Turtoniidae | 1 | 1 |
| Veneridae | 71 | 282 |
| Vesicomyidae | 15 | 230 |