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Ammonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming /

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Bibliographic Details
Main Author: Cobban, William A., 1916-2015
Corporate Author: Geological Survey (U.S.)
Format: Government Document Book
Language:English
Published: [Reston, Va.] : Dept. of the Interior, U.S. Geological Survey ; 1990.
Series:U.S. Geological Survey bulletin ; 1917-B.
Evolution of sedimentary basins--Powder River Basin ; ch. B.
Subjects:
Ammonoidea > Wyoming > Natrona County.
Bivalves, Fossil > Wyoming > Natrona County.
Geology, Stratigraphic > Cretaceous.
Paleontology > Wyoming > Natrona County.
Frontier Formation.
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