"Lower Heterobranchia"
Family: Acteonidae
Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
Pupa obliquicostulata | Smith, 1892 | St. Helena pupa snail | ? | Saint Helena | Extinct | Access |
Family: Valvatidae
Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
Borysthenia goldfussiana | Wüst, 1901 | Middle Pleistocene? | Britain | Extinct | Access | |
Valvata klemmi | Schütt, 1962 | 1982 | Lake Trichonis, Lake Ozeros, and Lake Lysimachia, Greece | Missing | Access | |
Valvata virens virens | Tryon, 1863 | Emerald valvata | ? | California, USA | Missing | Access |