WASHINGTON — A dinosaur fossil at the Smithsonian's National Museum of Natural History is celebrating a big achievement for one of its fossils. Its fossilized skeleton of the Jurassic dinosaur ...
The Smithsonian National History Museum’s fossil specimen of Allosaurus fragilis is perched like a nesting bird guarding a clutch of fossilized eggs. (Courtesy USNM V 4734, Department of Paleobiology, ...
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