1. ⁴⁰Ar/³⁹Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2005 Resource Type: Book Access & Availability: Loading
2. Age and correlation of Cretaceous rocks previously assigned to the Morrison(?) Formation, Sanpete-Sevier Valley area, central Utah Author/Creator: Witkind, Irving Jerome, 1917- author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
3. Age of tephra beds at the Ocean Point dinosaur locality, North Slope, Alaska, based on K-Ar and ⁴⁰Ar/³⁹Ar analyses Author/Creator: Conrad, James E., author Publication/Creation: Washington, D.C. : U.S. G.P.O., 1992 Resource Type: Book Access & Availability: Loading
4. Age of tephra beds at the Ocean Point dinosaur locality, North Slope, Alaska, based on K-Ar and ⁴⁰Ar/³⁹Ar analyses Author/Creator: Conrad, James E., author Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992 Resource Type: Book Access & Availability: Loading
5. Allostratigraphy of the U.S. Middle Atlantic continental margin--characteristics, distribution, and depositional history of principal unconformity-bounded Upper Cretaceous and Cenozoic sedimentary units Author/Creator: Poag, C. Wylie Publication/Creation: Washington : U.S. G.P.O., 1993 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1540-1542. Access & Availability: Loading
6. Allostratigraphy of the U.S. Middle Atlantic continental margin--characteristics, distribution, and depositional history of principal unconformity-bounded Upper Cretaceous and Cenozoic sedimentary units Author/Creator: Poag, C. Wylie, author Publication/Creation: Washington : U.S. Department of the Interior, U.S. Geological Survey, 1993 Resource Type: Book Access & Availability: Loading
7. Ammonites and some characteristic bivalves from the Upper Cretaceous Frontier Formation, Natrona County, Wyoming Author/Creator: Cobban, William A., 1916-2015, author Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1990 Resource Type: Book Access & Availability: Loading
8. Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1960 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 334-337. Access & Availability: Loading
9. Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1960 Resource Type: Book Access & Availability: Loading
10. Aspects of mid-Cretaceous regional geology Publication/Creation: London ; New York : Academic Press, 1981 Resource Type: Book Access & Availability: Loading