| Phylum: | MOLLUSCA | |
| Classe: | BIVALVIA | Linneo, 1758 |
| Ordine: | VENEROIDA | Adams H. & A., 1858 |
| Superfamiglia: | LEPTONOIDEA | Gray, 1847 |
| Leptonidae | Gray, 1847 | Erycinidae | Deshayes, 1850 |
| Galeommatidae | Gray, 1840 | Kelliidae | Forbes & Hanley, 1848 |
| Montacutidae | Clark, 1855 |