The I.M. Chait Gallery says the fossil of the 9-foot-long dryosaurus dating from the Jurassic era is one of only two of its kind in the world. The gallery said it could bring up to $500,000 at Saturday's auction.
Gallery operator Josh Chait says the fossil was taken from private land in Wyoming in 1993 and is being sold by Utah-based Western Paleontological Laboratories.
The auction also included the 7-foot-tall complete skeleton of a 20,000-year-old, juvenile wooly mammoth, and the fossilized skeleton of 20-foot-long marine lizard.
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On The Net:
I.M. Chait Gallery: http://www.chait.com/
Western Paleontological: http://www.westernpaleolabs.com/