Brontops sp.
Oligocene
Brule Formation
White River Badlands
South Dakota, USA.

Brontotheres were herbivorous mammals characterized by their massive bodies, pillar like limbs, and distinctive paired nasal horn structures in some species. They inhabited subtropical floodplains and forested environments, feeding on soft vegetation and browsing within dense ancient habitats.
Big 58mm titanothere tooth in 80mm jaw section