Mined from: Badlands region / White River Badlands, Brule Formation (within the White River Group), Pennington County area, South Dakota, U.S.A.

Era: Oligocene, Cenozoic
Geological Age: 23–34 mya

Description: This one of a kind Unworked Oreodont Merycoidodon culbertsoni bone fossil specimen features a naturally preserved section of fossilized bone and skull material held in a rugged tan-brown matrix. The specimen shows exposed curved bone elements, scattered dark brown fossil teeth, pale beige bone surfaces, and a rough sedimentary texture across the surrounding rock. The white mineral-like surface deposits and natural cracking add to its authentic fossil character, making it a distinctive display piece for collectors of prehistoric mammal fossils.

Oreodonts were extinct, sheep-to-pig-sized hoofed mammals that lived across North America during the Oligocene epoch, roughly 23–34 million years ago. Merycoidodon culbertsoni is one of the most recognized oreodont species and is strongly associated with the White River Formation, especially fossil-bearing deposits of the Badlands region in South Dakota, Nebraska, and Wyoming. These animals were herbivorous mammals that likely lived in herds across ancient plains and open woodland environments.

This piece is best suited for collectors, fossil preparation hobbyists, educational use, or display as a natural field specimen. Its partially exposed surface, surrounding host rock, and unworked condition make it a rewarding preparation candidate for those interested in hands-on fossil work, while still retaining the rugged character of a genuine fossil in matrix.

Quantity: 1pc

With this product, you will get the actual stone in the photograph. We do what we can to buy good quality products and price them honestly. The rocks may differ from the photos, but we hope we do them justice.