Stratigraphy, Structure, and Vertebrate Fossils of the Oligocene Brule Formation, Slim Buttes, Northwestern South Dakota
- 1 January 1970
- journal article
- Published by Geological Society of America in GSA Bulletin
- Vol. 81 (3), 831
- https://doi.org/10.1130/0016-7606(1970)81[831:ssavfo]2.0.co;2