Stratigraphy of the Niobrara formation at Pueblo, Colorado /

The fauna of the Ripley formation on Coon creek, Tennessee /
by: Wade, Bruce, 1889-
Published: (1926)

The flora of the Denver and associated formations of Colorado /
by: Knowlton, Frank Hall, 1860-1926
Published: (1930)

Shorter contributions to paleontology and stratigraphy /
Published: (1990)

Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1960)

Contributions to Late Cretaceous paleontology and stratigraphy of New Mexico : part I /
by: Wolberg, Donald L.
Published: (1985)

Molluscan fossils and stratigraphic descriptions from the Upper Cretaceous Mancos Shale, west-central Colorado /
by: Merewether, E. A. (Edward Allen), 1930-
Published: (2006)

Stratigraphy of the Upper Cretaceous rocks north of the Arkansas river in eastern Colorado /
by: Dane, C. H. (Carle Hamilton), 1900-1968
Published: (1937)

Geologic and biostratigraphic map of the Pierre shale between Jarre Creek and Loveland, Colorado /
by: Scott, Glenn R., 1918-2012
Published: (1965)

Upper Cretaceous rocks and ammonite faunas of southwestern New Mexico /
by: Cobban, William A., 1916-2015
Published: (1989)

Scaphitoid cephalopods of the Colorado group. : Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.
by: Cobban, William A., 1916-2015
Published: (1951)

The Frontier Formation and associated rocks of northeastern Utah and northwestern Colorado /
by: Molenaar, C. M.
Published: (1990)

Cretaceous environments of Asia /
Published: (2000)

The late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States /
by: Cobban, William A., 1916-2015
Published: (1969)

The Upper Cretaceous ammonite Watinoceras Warren in the western interior of the United States /
by: Cobban, William A., 1916-2015
Published: (1988)

The Lower Cretaceous ammonite Schloenbachia leonensis Conrad var. equidistans Cragin /
by: Cobban, William A., 1916-2015
Published: (1985)

The Pierre shale near Kremmling, Colorado : and its correlation to the east and the west /
by: Izett, Glen Arthur, 1928-, et al.
Published: (1971)

Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada /
by: Reeside, John B. (John Bernard), 1889-1958, et al.
Published: (1960)

Cretaceous ammonites from the lower part of the Matanuska formation, southern Alaska /
by: Jones, David Lawrence, 1930-
Published: (1967)

Contributions to Late Cretaceous paleontology and stratigraphy of New Mexico.
Published: (1988)

Microfossils of the Niobrara formation of southeastern South Dakota.
by: Bolin, Edward J.
Published: (1952)

Geologic, biostratigraphic, and structure map of the Pierre Shale between Loveland and Round Butte, Colorado /
Published: (1986)

Cenomanian and Lower Turonian echinoderms from Wilmington, south- east Devon, England /
Published: (1988)

Cretaceous research.
Published: (1980)

Archeogastropoda, Mesogastropooda and stratigraphy of the Ripley, Owl Creek, and Prairie Bluff formations /
by: Sohl, Norman F. (Norman Frederick), 1924-
Published: (1960)

Cretaceous and Tertiary formations of the Book Cliffs, Carbon, Emery, and Grand Counties, Utah, and Garfield and Mesa Counties, Colorado /
by: Fisher, D. Jerome, 1896-1988
Published: (1960)

The Late Cretaceous cephalopod Haresiceras Reeside and its possible origin /
by: Cobban, William A., 1916-2015
Published: (1964)

Ammonite faunas of the Sarten sandstone (Cretaceous), Luna County, New Mexico /
by: Cobban, William A., 1916-2015
Published: (1987)

The ammonite Metengonoceras Hyatt, 1903, from the Mowry Shale (Cretaceous) of Montana and Wyoming /
by: Cobban, William A., 1916-2015
Published: (1989)

Variations in vitrinite reflectance values for the Upper Cretaceous Mesaverde Formation, Southeastern Piceance Basin, northwestern Colorado : implications for burial history and potential hydrocarbon generation /
by: Nuccio, Vito F.
Published: (1989)

Invertebrate fauna and environment of deposition of the Niobrara Formation (Cretaceous) of Kansas /
by: Miller, Halsey W.q(Halsey Wilkinson), 1930-
Published: (1968)

Characteristic Lower Cretaceous megafossils from northern Alaska.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1960)

Ammonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming /
by: Cobban, William A., 1916-2015
Published: (1990)

Biostratigraphic studies in the Comanche : (Cretaceous) series of Northern Mexico and Texas.
by: Perkins, Bob F. (Bob Frank), 1929-1999
Published: (1961)

Foraminifera and stratigraphy of the upper part of the Pierre Shale and lower part of the Fox Hills Sandstone (Cretaceous) north-central South Dakota /
by: Mello, James F., 1936-
Published: (1969)

The cephalopods of the Eagle sandstone and related formations in the western interior of the United States /
by: Reeside, John B. (John Bernard), 1889-1958
Published: (1927)

Dinosaurs under the aurora /
by: Gangloff, Roland A.
Published: (2012)