Two new plant genera of Pennsylvanian age from Kansas coal balls /

Bibliographic Details
Main Author:	Mamay, Sergius H., 1920- (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1954.
Series:	Geological Survey professional paper ; 254-D. Shorter contributions to general geology.
Subjects:	Paleobotany > Pennsylvanian. Paleobotany > Kansas. Plant spores, Fossil. Seeds, Fossil. Coal balls > Kansas. Paleobotany. Pennsylvanian Geologic Period. Kansas. From 280 to 310 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo85308

Description
Item Description:	Title from title screen (viewed September 29, 2014). "Descriptions and illustrations of Tyliosperma and Sclerocelyphus fructifications."
Physical Description:	1 online resource (19 unnumbered pages, 3 unnumbered pages of plates) : illustrations.
Bibliography:	Includes bibliographical references (page 95) and index.