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Dinosaur Fossils

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Duck-Billed Dinosaur

Utah paleontologist Terry Gates holds the fossilized bill, left, and jawbone of a new species of a duck-billed dinosaur in front of an artist's rendition of the beast at a news conference Tuesday, Feb. 12, 2008, in the Utah Museum of Natural History at the University of Utah in Salt Lake City. The indentations in the jaw once held teeth. (AP Photo/Douglas C. Pizac)

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