1. Jurassic (Bathonian or early Callovian) ammonites from Alaska and Montana Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1962 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 372-374. Access & Availability: Loading
2. Late Jurassic ammonites from the western Sierra Nevada, California Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1961 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 372-374. Access & Availability: Loading
3. 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
4. Early Cretaceous (Albian) ammonites from the Chitina Valley and Talkeetna Mountains, Alaska 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. 353-355. Access & Availability: Loading
5. Succession and speciation of the pelecypod Aucella, Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1959 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 314 A-H. Access & Availability: Loading
6. Characteristic Jurassic mollusks from northern Alaska Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1955 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 274. Access & Availability: Loading
7. Characteristic marine Jurassic fossils from the western interior of the United States Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1948 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 214. Access & Availability: Loading