Bullion Creek Formation Stratigraphic range: Paleogene |
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Type | Formation |
Underlies | Sentinel Butte Formation |
Overlies | Slope and Cannonball formations |
Location | |
Region | North Dakota |
Country | United States |
The Bullion Creek Formation is a geologic formation in western North Dakota. It preserves bones and tracks of an extinct crocodile and other fossils of Late Paleocene age .