In the late Jurassic period, this fleet-footed plant eater, known as Dryosaurus altus, needed those powerful hindquarters to scurry away from its many predators.

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Though the Dryosaurus is in good shape, with 80% of its skeleton intact, Miles says he's afraid Chait's estimate is overly optimistic in this climate.

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At just nine feet long, the Dryosaurus' relatively petite size could make it attractive to a private collector interested in displaying a Jurassic specimen in his living room.

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The Dryosaurus skeleton is the star of the sale.

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