1. Early and middle Bajocian (middle Jurassic) ammonites from southern Alaska Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Alexandria, VA : For sale by the Distribution Branch, U.S. Geological Survey Resource Type: Book Access & Availability: Loading
2. 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
3. Early Jurassic ammonites from Alaska Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: For sale by the Supt. of Docs., U.S. G.P.O.. Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1145-1149. Access & Availability: Loading