Middle Jurassic (Bajocian and Bathonian) ammonites from northern 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, 1976.
Series:	Geological Survey professional paper ; 854.
Subjects:	Ammonoidea. Paleontology > Jurassic. Paleontology > Alaska. Jurassic Geologic Period. Paleontology. Alaska. From 140 to 190 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo89202

Description
Item Description:	Title from title screen (viewed October 2, 2014). "An ammonite succession nearly identical with that in northern Canada is correlated with a more varied ammonite succession in southern Alaska."
Physical Description:	1 online resource (iii, 22 pages, 4 unnumbered pages of plates) : illustrations, maps.
Bibliography:	Includes bibliographical references (pages 18-19) and index.