Patellogastropoda (True Limpets)
Family: Lottiidae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Lottia alveus | (Conrad, 1831) | Eelgrass limpet | 1929 (1933?) | Canada (Labrador) & USA (Maine, Massachusetts, Connecticut, New York) | Extinct | Access |
| Lottia edmitchelli | Lipps, 1966 | Rocky shore limpet | 1861 | California, USA | Extinct | Access |