- North America38 objects
- The Americas38 objects
- United States38 objects
- Nevada37 objects
- Churchill County, Nevada30 objects
- NV-Ch-35 (Humboldt Cave), Churchill County, Nevada28 objects
- Elko County, Nevada6 objects
- NV-El-24, Elko County, Nevada3 objects
- NV-El-25, Elko County, Nevada3 objects
- Humboldt Lake region, Churchill County, Nevada1 objects
- Lander County, Nevada1 objects
- NV-Ch-19 (Fish Cave), Churchill County, Nevada1 objects
- NV-La-1 (Potts Cave), Lander County, Nevada1 objects
- Northern Utah1 objects
- Site 4, Tooele County, Utah1 objects
- Southwestern United States1 objects
- Tooele County, Utah1 objects
- Utah1 objects