| |
Species |
Oreohelix vortex (Whorled Mountainsnail) |
Whorled Mountainsnail, Vortex Banded Mountain Snail, Whorled Mountain Snail |
|
Species |
Oreohelix waltoni (Lava Rock Mountainsnail) |
Lava Rock Mountainsnail, Lava Rock Mountain Snail, Walton's Banded Mountain Snail |
|
Species |
Oxychilus alliarius (Garlic Glass-snail) |
Garlic Glass-snail, Garlic Snail, Garlic Glass Snail |
|
Species |
Oxychilus cellarius (Cellar Glass-snail) |
Cellar Glass-snail, Cellar Glass Snail |
|
Species |
Oxychilus draparnaudi (Dark-bodied Glass-snail) |
Dark-bodied Glass-snail, Drapanaud's Glass Snail |
| |
Species |
Oxyloma hawkinsi (Boundary Ambersnail) |
Boundary Ambersnail |
|
Species |
Oxyloma haydeni (Niobrara Ambersnail) |
Niobrara Ambersnail |
| |
Species |
Oxyloma nuttallianum (Oblique Ambersnail) |
Oblique Ambersnail |
| |
Species |
Oxyloma sillimani (Humboldt Ambersnail) |
Humboldt Ambersnail |
| |
Species |
Paralaoma servilis (Pinhead Spot) |
Pinhead Spot |
| |
Species |
Planogyra clappi (Western Flat-whorl) |
Western Flat-whorl |
| |
Species |
Polygyrella polygyrella (Humped Coin) |
Humped Coin |
| |
Species |
Pristiloma arcticum (Northern Tightcoil) |
Northern Tightcoil |
| |
Species |
Pristiloma chersinella (Black-footed Tightcoil) |
Black-footed Tightcoil |
| |
Species |
Pristiloma idahoense (Thinlip Tightcoil) |
Thinlip Tightcoil |
