Sites
| Site Identifier | Name | Location | Samples |
|---|---|---|---|
| 48NO11 | Rawhide Butte Mammoth | Niobrara County | 1 |
| 48NO158 | Niobrara County | 1 | |
| 48NO201 | Agate Basin | Niobrara County | 18 |
| 48NO203 | Betty Greene | Niobrara County | 2 |
| 48NO204 | Lance Creek | Niobrara County | 1 |
| 48NO211 | Sheaman | Niobrara County | 16 |
| 48NO426 | Niobrara County | 1 | |
| 48NO65 | Niobrara County | 2 |