Revision of the fossil ferns from the Potomac group which have been referred to the genera Cladophlebis and Thyrsopteris
By: by Edward W. Berry
Publisher: Government Printing Office
Published: 1911
Place of publication: Washington
Language: eng
Number of pages: 332
Subjects: Fossil Ferns; Paleobotany
Notes: From the Proceedings of the U. S. National Museum, v. 41, p. 307-332, October 1911.