1. Cenozoic mammal horizons of western North America Author/Creator: Osborn, Henry Fairfield, 1857-1935, author Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1909 Resource Type: Book Access & Availability: Loading
2. Cenozoic mammal horizons of western North America Author/Creator: Osborn, Henry Fairfield, 1857-1935 Publication/Creation: Washington : Govt. Print. Off, 1909 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 361-370. Access & Availability: Loading
3. A Natural History of the New World : The Ecology and Evolution of Plants in the Americas Author/Creator: Graham, Alan, author Publication/Creation: Chicago : University of Chicago Press, [2010] Resource Type: Book Access & Availability: Loading
4. On the Mesozoic and Cenozoic paleontology of California Author/Creator: White, Charles A. 1826-1910, (Charles Abiathar), author Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1885 Resource Type: Book Access & Availability: Loading