Surf these sites: Eocene Fossils -- These specimens are adjunct to a larger collection (15,500 pieces of rock on which are contained perhaps as many as 65,000 individual specimens), donated to and housed at the USNM-Smithsonian Institution, Washington, D.C. Fossil Butte National Monument -- This 50-million year old lake bed is one of the richest fossil localities in the world. Green River Formation -- From the U.C. Museum of Paleontology Green River Formation Room -- Museum of Western Colorado
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