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

Bibliographic Details
Main Author:	Cobban, William A., 1916-2015 (Author)
Format:	Government Document eBook
Language:	English
Published:	[Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1990.
Series:	Evolution of sedimentary basins--Powder River Basin ; ch. B. U.S. Geological Survey bulletin ; 1917-B.
Subjects:	Ammonoidea > Wyoming > Natrona County. Bivalves, Fossil > Wyoming > Natrona County. Geology, Stratigraphic > Cretaceous. Paleontology > Wyoming > Natrona County. Frontier Formation. Ammonoidea. Bivalves, Fossil. Cretaceous Geologic Period. Geology, Stratigraphic. Paleontology. United States > Frontier Formation. Wyoming > Natrona County. From 65 to 140 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo68304

by Cobban, William A., 1916-2015
Published 1990

Government Document Book