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Spatial Coverage
- Powder River Basin (Wyo. and Mont.)25
- Montana15
- Utah6
- Emery County4
- Powder River Basin.4
- United States4
- Carbon County3
- Colorado2
- Mesaverde Group2
- Sanpete County2
- Wasatch Plateau (Utah)2
- Alberta1
- Beaverhead County1
- Mexico, Gulf of1
- Moose Mountain Region1
- Moose Mountain Region (Alta.)1
- Niobrara Formation1
- North Dakota1
- Pioneer Mountains1
- Powder River Watershed (Wyo. and Mont.)1
