Ordovician fossils from wells in the Williston basin, eastern Montana
By: by Reuben James Ross, Jr.
Series: Contributions to general geology; Geological Survey bulletin -- 1021-M
Publisher: U.S. G.P.O.
Published: 1957
Place of publication: Washington
Language: eng
Number of pages: 510
Subjects: Geology, Stratigraphic -- Ordovician.; Stratigraphic correlation -- Montana.; Stratigraphic correlation -- Williston Basin.; Geology -- Montana.; Geology -- Williston Basin.; Paleontology -- Ordovician.; Paleontology -- Montana -- Ordovician.; Paleontology -- Williston Basin -- Ordovician.; Williston Basin.
Notes: One folded plate in pocket (plate 44).

Includes index.

Bibliography: p. 504-506.

Library's copy lacks plate 44.