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Date: 2011-02-11 12:46:55Paleontology Geology of the Rocky Mountains Eocene Green River Formation Lagerstätten Fossil Butte National Monument Dinosaurs Fossil Specimens of Tyrannosaurus Geologic time scale Phanerozoic Geology | Add to Reading ListSource URL: www.nps.govDownload Document from Source WebsiteFile Size: 3,60 MBShare Document on Facebook |