Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the western interior of the United States /

Bibliographic Details
Main Author:	Cobban, William A., 1916-2015 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : Department of the Interior, U.S. Geological Survey, 1987.
Series:	U.S. Geological Survey professional paper ; 1445.
Subjects:	Acanthoceratidae > Frontier Formation. Ammonoidea > Frontier Formation. Paleontology > Cretaceous. Paleontology > United States. Acanthoceratidae. Cretaceous Geologic Period. Paleontology. United States. From 65 to 140 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo105875

by Cobban, William A., 1916-2015
Published 1987

Government Document Book