Subhyracodon sp. | Brule Formation, Badlands, South Dakota, USA

This fossil includes a rib cage and snout of Subhyracodon sp., an ancient rhinoceros that lived during the Oligocene in North America. The rib cage is robust, providing structural support, while the snout is wide and elongated, adapted for eating various plants.

• The description claims that fossils of Subhyracodon sp. are important for understanding the evolution and diversity of early rhinoceroses during the Oligocene.