Complete Oreodont Fossil.
A complete Oreodont skelton from the Brule Formation of Scenic, South Dakota. A rare fossil from the Oligocene Epoch and has the scientific name Merycoidodon culbertsoni. A large and very displayable piece measuring 22.3" x 14.2" x 3.5". The specimen exhibits excellent preservation of teeth and bones. A superb articulated piece.
Sometimes called a prehistoric "ruminating hog," (although they were neither Ruminants nor hogs), the typical oreodont ("Mountain teeth") was a sheep-sized (though some genera grew to the size of cattle), cud-chewing plant-eater with a short face, tusk-like canine teeth, heavy body, long tail, short feet, and four-toed hooves.
The animals would have looked rather sheep-like, but features of their teeth indicate that they were more closely related to camelids. They were most likely woodland and grassland browsers, and were widespread in North America during the Oligocene and Miocene.
Later forms diversified to suit a range of different habitats. For example, Promerycochoerus had adaptations suggesting a semi-amphibious lifestyle, similar to that of modern hippos..