Description of a new fossil fern of the genus Gleichenia from the Upper Cretaceous of Wyoming
By: by F.H. Knowlton
Publisher: Government Printing Office
Published: 1913
Place of publication: Washington
Language: eng
Number of pages: 558
Subjects: Gleichenia; Paleobotany
Notes: "No. 1994.--From the Proceedings of the United States National Museum, Vol. 45, pages 555-558, with Plate 44."

"Published June 21, 1913."