Bullion Creek Formation
| Bullion Creek Formation | |
|---|---|
| Stratigraphic range: Thanetian ~ | |
| 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.