1. New and little-known ammonites from the Upper Cretaceous (Cenomanian and Turonian) of the western interior of the United States, Author/Creator: Cobban, William A., 1916-2015 Publication/Creation: Washington : U.S. Govt. Print. Off, 1971 Format: Book Is Part Of: U.S. Geological Survey professional paper, no. 692-699. Access & Availability: Loading