Contributions to Late Cretaceous stratigraphy and paleontology, western Montana.
Contributors: Dyman, T. S.; Tysdal, Russell G.; Cobban, William Aubrey, 1916-
Series: U.S. Geological Survey bulletin ;; 1962
Publisher: U.S. G.P.O.; For sale by the Books and Open-File Reports Section, U.S. Geological Survey
Published: 1991
Place of publication: Washington, D.C; Denver CO
Language: eng
Number of pages: 26
Subjects: Geology, Stratigraphic -- Cretaceous.; Paleontology -- Cretaceous.; Geology -- Montana.; Geology -- Idaho.; Paleontology -- Montana.
Notes: Includes bibliographical references.
"This volume is published as chapters A-C. These chapters are not available separately."
Table of contents: value: A. Redefinition of Frontier Formation-Beaverhead Group contact, Lima Peaks area, southwestern Montana and southeastern Idaho / by T.S. Dyman, J.C. Haley, and W.J. Perry, Jr.; value: Biostratigraphic correlation of Santonian and Campanian formations in the northwestern part of Yellowstone National Park, Madison Range, and Livingston area of southwestern Montana / by R.G. Tysdal and D.J. Nichols; value: Occurrence and significance of the middle Turonian (Upper Cretaceous) belemnite Actinocamax in central western Montana / by William A. Cobban.