Big Bend National Park Service U.S. Department of the Interior Big Bend National Park

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Date: 2006-08-04 21:32:17 Quetzalcoatlus Pterosaur Javelina Formation Wann Langston Jr. Alamosaurus Cretaceous–Tertiary extinction event Douglas A. Lawson Hatzegopteryx Phanerozoic Mesozoic Geologic time scale		Big Bend National Park Service U.S. Department of the Interior Big Bend National Park Add to Reading List Source URL: www.nps.gov Download Document from Source Website File Size: 639,14 KB Share Document on Facebook

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