... The stratigraphic relations and paleontology of the "Hell creek beds", "Ceratops beds" and equivalents
Subtitle: and their reference to the FortUnion  formation
By: by F. H. Knowlton.
Series: Proceedings of the Washington academy of sciences.; vol. XI, no. 3
Publisher: Washington acakedmy of sciences
Published: 1909
Place of publication: Baltimore, Md
Language: eng
Number of pages: 238
Subjects: Geology -- West (U.S.); Geology, Stratigraphic -- Cretaceous.; Geology, Stratigraphic -- Eocene.