Bullion Creek Formation

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Bullion Creek Formation
Stratigraphic range: Paleogene
Type Formation
Underlies Sentinel Butte Formation
Overlies Slope and Cannonball formations
Region North Dakota
Country United States

The Bullion Creek Formation is a geologic formation in western North Dakota.[1] It preserves bones and tracks of an extinct crocodile and other fossils of Late Paleocene age [2].

See also[edit]


  1. ^ Bluemle, John P. 1988. "Generalized Bedrock Geological Map of North Dakota" (PDF). North Dakota Geological Survey, Miscellaneous Map 28. Retrieved 2017-02-03. 
  2. ^ Erickson, B.R., 2005. Crocodile and Arthropod Tracks from the Late Paleocene Wannagan Creek Fauna of North Dakota, USA. Ichnos, 12(4):3 03-308.