North American species of Tempskya and their stratigraphic significance /

Bibliographic Details
Main Authors:	Ash, Sidney R., 1928- (Author), Read, C. B. (Author), Zeller, Robert A. (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1976.
Series:	Geological Survey professional paper ; 874.
Subjects:	Paleobotany > Cretaceous. Paleobotany > New Mexico > Hidalgo County. Ferns, Fossil. Geology, Stratigraphic > Cretaceous. Cretaceous Geologic Period. Geology, Stratigraphic. Paleobotany. New Mexico > Hidalgo County. From 65 to 140 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo89166

Description
Item Description:	Title from title screen (viewed October 2, 2014). "A description of two new species of the Early Cretaceous tree fern Tempskya and a discussion of the characters and distribution of the other North American species."
Physical Description:	1 online resource (iii, 42 pages) : illustrations, maps.
Bibliography:	Includes bibliographical references (pages 36-40) and index.