Scaphitoid cephalopods of the Colorado group /

Bibliographic Details
Main Author:	Cobban, William A., 1916-2015 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1951.
Series:	Geological Survey professional paper ; 239.
Subjects:	Ammonoidea > West (U.S.) Scaphitidae > West (U.S.) Paleontology > Cretaceous. Ammonoidea. Cretaceous Geologic Period. Paleontology. Scaphitidae. Middle West. From 65 to 140 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo85174

Description
Item Description:	Title from title screen (viewed September 29, 2014). "Evolution of scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States."
Physical Description:	1 online resource (iii, 42 pages, 21 pages of plates) : illustrations, maps.
Bibliography:	Includes bibliographical references (page 39) and index.