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First Discoveries THE CLIMATE, LIFE, AND LANDSCAPE OF JURASSIC TIME How Do We Know? Why So Many? WHY DID DINOSAURS BECOME EXTINCT? HISTORY AND DEVELOPMENT OF THE QUARRY Discovery and Early Years The National Park System, of which Dinosaur National Monument is a unit, is dedicated to conserving the scenic, scientific, and historic heritage of the United States for the benefit and enjoyment of its people. | |||||||||||
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