Lot 123

Fossilized Juvenile Oreodont Merycoidodontoidea Skull

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Fossilized Juvenile Oreodont Merycoidodontoidea Skull

Estimate: $1,600 - $2,400

Starting Bid: $800

(0 Bids)

June 5, 2026 9:00 AM MDT
Live Auction
Louisville, CO, US

Description:

North America, United States, Wyoming, White River Formation, ca. late Eocene to early Miocene period, ca. 35 to 5 million years ago. A fantastic, fossilized skull from a juvenile oreodont (Merycoidodontoidea) a prehistoric mammal that roamed across North America. This skull is beautifully preserved with white plaster on the interior cavities. Both orbits (ocular cavities) are intact. The upper and lower jaws are slightly parted to reveal the rows of teeth, from which the oreodont name is derived. The molar teeth are an interesting high crown shape - pointy and triangular, and their name translates to "mountain tooth." The front canines are pointy; however, these mammals were herbivores and had traits that often were described as sheep, rhino, or pig like. Oreodonts roamed the prehistoric North America grasslands in herds grinding up the plants with their "mountainous" teeth. Size: 5" L x 2.75" W x 3.5" H (12.7 cm x 7 cm x 8.9 cm)

Provenance: private Texas, USA Collection, private Lakewood, Colorado, USA collection, acquired 2017; ex Alexander Sachs collection, a board member of the American Museum of Natural History in New York City, New York, USA

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Item # 201806

  • Condition: Excellent. Restoration to the skull on back tips of mandibles and mandible joints. Restoration on the orbital bones and central arch/ridge. Excellent preservation of teeth!

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Bid Increments
From: To: Increments:
$0 $299 $25
$300 $999 $50
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 $199,999 $10,000
$200,000 + $20,000