Sentinel Butte Formation

Sentinel Butte Formation Stratigraphic range: Paleocene
Type	Formation
Underlies	Golden Valley Formation
Overlies	Bullion Creek Formation
Location
Region	North Dakota
Country	United States

The Sentinel Butte Formation is a geologic formation of Paleocene age in the Williston Basin of western North Dakota. It preserves significant assemblages of nonmarine plant and animal fossils.