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North Dakota is underlain by Precambrian crystalline basement rock, although these rocks are less well understood than in neighboring states. In the Proterozoic, a mountain range known as the Western Dakota Mobile Belt formed between two billion and 1.8 billion years ago in connection with the Trans-Hudson orogeny, stretching north into Manitoba and Saskatchewan before eroding almost entirely ...
The Wannagan Creek site is a fossil site found just west of the South Unit of Theodore Roosevelt National Park of North Dakota, US. The site is Paleocene in age, approximately 60 million years old. Paleontologists of the Science Museum of Minnesota have studied the site for nearly thirty years.
North Dakota, South Dakota: Country: United States: The Ludlow Formation is a geologic formation in western North Dakota. [1] It preserves fossils dating back to the ...
The fossil was collected in 2015 by the North Dakota Geological Survey, a state agency dedicated to geology and public education about minerals and fossils. In fact, Zietlow said, NDGS 10838 was ...
North Dakota: Country: United States: The Cannonball Formation is a geologic formation in western North Dakota. [1] It preserves fossils dating back to the Paleogene ...
Lemke, Richard Walter; Preliminary geologic map showing boundaries of glacial Lake Souris, North Dakota; Report 52-02; U.S. Geological Survey; Reston, VA; 1952; doi:10.3133/ofr5292 The Glacial Lake Souris occupied the basin of the Souris River from the most southern portion of this river's loop in North Dakota to its elbow in Manitoba , where ...
The Sentinel Butte Formation is a geologic formation of Paleocene age in the Williston Basin of western North Dakota. [1] It preserves significant assemblages of non-marine plant and animal fossils .
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 ]