Horse Jaw Section | South Dakota chalcedony cold-adapted herbivorous mammal that lived

cold-adapted herbivorous mammal that lived during the Pleistocene Epoch

Guggisberg

and skeletal structure

The mine comprises three open-cut pits including "Big Pit"

and Zimbabwe

Horse Jaw Section | South Dakota chalcedony cold-adapted herbivorous mammal that livedMesohippus sp. Oligocene (33 30 MYO) Brule Formation White River Badlands South Dakota Specimen approx. size: 1. 25" x 1" x 0. 5" Mesohippus is a genus of extinct early horse that lived during the late Eocene to early Oligocene epochs, approximately 37 to 30 million years ago. Its fossils are primarily found in North America, particularly in the White River Formation of the western United States. As a transitional form in equid evolution, Mesohippus