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:	From 280 to 310 million years ago Paleobotany > Pennsylvanian. Paleobotany > Kansas. Plant spores, Fossil. Seeds, Fossil. Coal balls > Kansas. Paleobotany. Pennsylvanian Geologic Period. Kansas.
Online Access:	https://purl.fdlp.gov/GPO/gpo85308