Filter by: Subject
Now showing items 1-8 of 1
| Cretaceous - Fox Hills sandstone; Pierre shale; Niobrara formation; Carlile formation; Greenhorn formation; Graneros shale; Dakota Sandstone; Fuson formation; Lakota sandstone; Morrison shale (1) |
| Geology -- United States --Maps (1) |
| Geology -- Wyoming -- Crook County -- Maps (1) |
| Groundwater -- Wyoming -- Crook County -- Maps (1) |
| Jurassic - Morrison shale; Sundance formation (1) |
| Neogene - unnamed strata (1) |
| Paleogene - unnamed strata (1) |
| Triassic - Spearfish formation (1) |