Fossil wood

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81	PDF Document Add to Reading List Source URL: nature.nps.gov Language: English - Date: 2006-06-08 12:48:15 Arizona Paleobotany Petrified Forest National Park Petrified wood Fossil wood Florissant Fossil Beds National Monument Araucarioxylon arizonicum Agate Fossil Beds National Monument National Park Service Paleontology Fossils Biology
82	PDF Document Add to Reading List Source URL: si-pddr.si.edu Language: English - Date: 2011-05-04 03:10:54 Extinction Tyrannosaurs Fossil wood Specimens of Tyrannosaurus Wood Paleontology Biology Araucarioxylon arizonicum
83	PDF Document Add to Reading List Source URL: petrifiedwoodmuseum.org Language: English - Date: 2012-12-20 21:48:05 Matter Petrifaction Permineralization Opal Petrified wood Fossil wood Silicon dioxide Quartz Fossil Fossils Biology Geology