Huge Museum White River Eporeodon major Skull

Eporeodon major

Class Mammalia, Order Artiodactyla, Suborder Oreodonta, Family Oreodontidae

Geological Time: Oligocene – (35 million years ago)

Size: The skull is 265 mm in length by 140 mm in height by 155 mm wide (10 ¼” x 5 1/2” x 5 7/8”)

Fossil Site: Upper Brule Formation, White River Badlands, Chadron Nebraska Area


EporeodonDescription: Believe me; you wouldn’t want to have tangled with this growling, nasty little beast when it roamed the grasslands and plains of ancient America. The skull is solid and heavy in the hand. It most certainly would be a centerpiece for a private collection, or museum display grade fossil.

The Eporeodon skull has approximately 5% restoration. The crest, and enamel repair on part of upper canines and about half of incisors were repaired or reconstructed. The restoration work is well within the expected norms for specimens of this showcase quality. The front of the jaw rests comfortably on what appears to be the top of a thighbone.

Eporeodon major OreodontThe badlands of the western US are particularly rich in mammal fossils from the late Eocene to Miocene. The Brule Formation is exposed over a huge area including Nebraska, North and South Dakota, Wyoming, and Colorado, and yields abundant fossils as layers are eroded. This diverse group of stocky prehistoric mammals grazed amid the grasslands, prairies or savannas of North and Central America throughout much of the Cenozoic era.

The Oreodonta is an extinct mammal group distantly related to pigs, hogs, camels, Oreodonthippopotamuses, and the pig-like peccaries. Over 50 species of Oreodonta have been described. They first appeared some 50 million years ago during the warm Eocene and were widely prevalent during the Oligocene in the grasslands, prairies or savannas of what is now the North American badlands. The Oreodonts mysteriously disappeared some four million years ago during the Pliocene. Today, fossil jaws and teeth of the Oreodonta are commonly found in the White River badlands in South Dakota, Nebraska, and Wyoming. Oreodonts have a unique place in the evolution of ruminant teeth and with peccary-like attributes. Oreodonts are Artiodactyls, even toed ungulates, sometimes called a cross between a pig and a sheep. Note that they have both large canine front teeth, but also molars for chewing.

 


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