Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho -- a graptolite zone reference section /

Bibliographic Details
Main Author:	Carter, Claire (Author)
Other Authors:	Churkin, Michael, 1932-
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1977.
Series:	Geological Survey professional paper ; 1020.
Subjects:	Graptolites > Idaho > Custer County. Graptolites > Idaho > Blaine County. Paleontology > Ordovician. Paleontology > Silurian. Paleontology > Idaho > Custer County. Paleontology > Idaho > Blaine County. Graptolites. Ordovician Geologic Period. Paleontology. Silurian Geologic Period. Idaho > Blaine County. Idaho > Custer County. From 405 to 500 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo89685

Description
Physical Description:	1 online resource (iv, 37 pages, 7 unnumbered leaves of plates) : illustrations, map.
Bibliography:	Includes bibliographical references (pages 32-33) and index.