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Relations of late Paleozoic and early Mesozoic formations of southwestern Montana and adjacent parts of Wyoming
The object of this paper is twofold - to present evidence found in southwestern Montana concerning the great Jurassic base-leveling and its bearing on the solution of certain stratigraphic problems involving late Paleozoic, Triassic, and Jurassic formations, and to set forth the relations of those formations to beds in western Wyoming.
Authors
D. Dale Condit
Reptilian faunas of the Torrejon, Puerco, and underlying Upper Cretaceous formations of San Juan County, New Mexico
No abstract available.
Authors
Charles W. Gilmore
Some American Cretaceous fish scales, with notes on the classification and distribution of Cretaceous fishes
Fish remains are extremely abundant in several Cretaceous formations of the Rocky Mountains and Great Plains, but except in the Niobrara formation of Kansas, a fish skeleton well enough preserved for description or identification is the greatest rarity. The fishes are represented by separate scales, in some places associated with a few vertebrae and other fragmentary bones or by isolated teeth.
Authors
T.D.A. Cockerell
Some American Jurassic ammonites of the genera Quenstedticeras, Cardioceras, and Amoeboceras, family Cardioceratida
The species cordiforme Meek and Hayden, distans Whitfield, canadense Whiteaves, and dubium Hyatt (probably including whitneyi J. P. Smith), variously assigned to the genera Amaltheus, Quenstediceras, Amoeboceras, and Cardioceras, and subtumidum Whitfield and Hovey, assigned to Aegoceras, include all the previously described species of Jurassic ammonites that are considered in this paper. Material
Authors
John B. Reeside
Surface water supply of the United States, 1916 : Part 12. North Pacific drainage basins : B. Snake River basin
No abstract available.
Authors
Surface water supply of the United States, 1916 : Part X. The Great Basin
No abstract available.
Authors