| Phylum: | MOLLUSCA | |
| Classe: | GASTROPODA | Cuvier, 1797 |
| Ordine: | ARCHAEOGASTROPODA | Thiele, 1925 |
| COCCULINOIDEA | Thiele, 1909 | NERITOIDEA | Rafinesque, 1815 |
| FISSURELLOIDEA | Fleming, 1822 | PATELLOIDEA | Rafinesque, 1815 |
| PLEUROTOMARIOIDEA | Swainson, 1840 | TROCHOIDEA | Rafinesque, 1815 |