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The Tongue River Member is the uppermost geologic member of the
{{Paleogene-stub
Mudstones and sandstone, Tongue River Member, exposed in a roadcut, US Highway 87
Fort Union Formation
The Fort Union Formation is a geologic unit containing sandstones, shales, and coal beds in Wyoming, Montana, and parts of adjacent states. In the Powder River Basin, it contains important economic deposits of coal, uranium, and coalbed methane.
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in Montana, North Dakota, Wyoming. The strata are yellow or light-colored massive sandstones and numerous thick coal beds.
The vertebrate fossil fauna includes fishes, turtles, crocodiles, and mammals. Mammalian genera known from rocks of both the Torrejonian and the Tiffanian land mammal ages (middle and late Paleocene) are present.
See also
*List of fossiliferous stratigraphic units in North Dakota
This article contains a list of fossil-bearing stratigraphic units in the state of North Dakota, U.S.
Sites
See also
* Paleontology in North Dakota
References
*
{{DEFAULTSORT:Fossiliferous stratigraphic units in North Dakota
North Dak ...
* Paleontology in North Dakota
Paleontology in North Dakota refers to paleontological research occurring within or conducted by people from the U.S. state of North Dakota. During the early Paleozoic era most of North Dakota was covered by a sea home to brachiopods, corals, and ...
* Paleontology in Wyoming
Paleontology in Wyoming includes research into the prehistoric life of the U.S. state of Wyoming as well as investigations conducted by Wyomingite researchers and institutions into ancient life occurring elsewhere. The fossil record of the US sta ...
References
Paleogene Montana Paleogene geology of North Dakota
{{Paleogene-stub
Mudstones and sandstone, Tongue River Member, exposed in a roadcut, US Highway 87
