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Hesperornis ("western bird") a toothed aquatic bird of the extinct genus Hesperornis, fossils of which are found in rocks of Cretaceous age in Kansas, having the rear legs modified for swimming and reaching a length of more than 4 feet.
March 14th, 2013
Viewed 6 Times - Last Visitor from Beverly Hills, CA on 07/23/2014 at 9:46 AM
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