Specimen Details
Species
Megacerops sp.
Age
Late Eocene
(~34-54 Million Years)
Location
Pennington County, South Dakota
Formation
Chadron Formation
20.7" long
Size
Description
This Megacerops jaw tells the story of one of North America's strangest extinct mammals. Five massive molars line the bone, built for grinding tough Eocene vegetation. Despite looking like a rhinoceros, Titanotheres were more closely related to horses. They stood over eight feet tall at the shoulder and sported paired horns on their snouts.
Recovered from South Dakota's Chadron Formation, this specimen comes from the final chapter of Titanothere history. These giants dominated North American grasslands for 20 million years before vanishing completely at the Eocene-Oligocene boundary. Climate change transformed their world, replacing lush forests with drier plains. The powerful jaw and worn molars preserve the last days of an animal that ruled its ecosystem, then disappeared forever.
Condition & Restoration
Typical preparation for large terrestrial mammal fossils. Gap fill restoration applied along the gum line below teeth and within repaired cracks throughout the jaw to ensure stability. The most significant restoration is present along the mandibular angle. All five original molars are preserved. Overall restoration is minimal and consistent with standard paleontological conservation practices.
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