Skulls (casts) of the oreodont Oreodon from Jones Fossil Farm, Worthington, MN.
Souvenir postcard showing a mounted skeleton of the oreodont Merycoidodon culbertsoni mounted at the Science Museum. St. Paul, MN, photo by Don Harding.
Black and white reproduction of a color painting by Robert Bruce Horfall published in The White River Badlands, by Cleophas C. O’Harra (South Dakota School of Mines Bulletin No. 13, November 1920, now a collectors item). The painting — which originally appeared in the 1913 book A History of Land Mammals in the Western Hemisphere, by W. B. Scott — depicts the common oreodont Merycoidodon (Oreodon) culburtsoni.