Additions to the flora of the Spotted Ridge Formation in central Oregon /

Bibliographic Details
Main Authors:	Mamay, Sergius H., 1920- (Author), Read, C. B. (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1956.
Series:	Geological Survey professional paper ; 274-L. Shorter contributions to general geology.
Subjects:	From 280 to 310 million years ago Paleobotany > Oregon, Central. Paleobotany > Pennsylvanian. Formations (Geology) > Oregon, Central. Paleobotany. Pennsylvanian Geologic Period. Oregon, Central.
Online Access:	https://purl.fdlp.gov/GPO/gpo86141

Description
Item Description:	"The U.S. Geological Survey' s previously undescribed collection of fossil plants from the Spotted Ridge formation is fully described and illustrated, including three new species."
Physical Description:	1 online resource (22 unnumbered pages, 4 unnumbered pages of plates) : illustrations.
Bibliography:	Includes bibliographical references (pages 223-224) and index.