Vetigastropoda
Family: Calliostomidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Calliostoma bullatum | (Philippi, 1844) | - | (rediscovered) | NE Atlantic Ocean | Rediscovered | Access |
|
Calliostoma torrei |
Clench & Aguayo, 1940 | - | (rediscovered) | Cuba & Florida, USA | Rediscovered | Access |
Family: Fissurellidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Tugali superba | Powell, 1934 | - | Late Pleistocene | North Island, New Zealand | Extinct | Access |
Family: Haliotidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Haliotis sorenseni | Bartsch, 1940 | - | ? | North America | Missing | Access |
Family: Seguenziidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Basilissa superba | Watson, 1879 | - | - | Australia & Japan | Rediscovered | Access |
Family: Trochidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Clanculus largillierti | Philippi, 1849 | - | - | Mascarene Islands | Rediscovered | Access |
| Steromphala nivosa | (A. Adams, 1853) | Maltese topshell | - | Maltese Islands, Mediterranean | Rediscovered | Access |