Middle Jurassic (Bathonian) ammonites from southern Alaska /

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1980.
Series:	Geological Survey professional paper ; 1091.
Subjects:	From 140 to 190 million years ago Ammonoidea. Paleontology > Jurassic. Paleontology > Alaska. Jurassic Geologic Period. Paleontology. Alaska.
Online Access:	https://purl.fdlp.gov/GPO/gpo89954

Description
Item Description:	Title from title screen (viewed October 6, 2014). "Studies of Bathonian ammonites from southern Alaska provide correlations with the arctic region in general, with the Pacific coast and western interior regions of North America, and with the early Bathonian of some other parts of the world."
Physical Description:	1 online resource (iv, 42 pages, 24 unnumbered pages of plates) : illustrations, map.
Bibliography:	Includes bibliographical references (pages 38-39) and index.