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 Date: 2012-11-04 13:21:49Jurassic Phytosaur Trace fossil Grallator Morrison Formation Aetosaur Navajo Sandstone Ceratosaurus Hettangian Mesozoic Geography of the United States Phanerozoic |
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| First Page | Document Content | |
|---|---|---|
Date: 2012-11-04 13:21:49Jurassic Phytosaur Trace fossil Grallator Morrison Formation Aetosaur Navajo Sandstone Ceratosaurus Hettangian Mesozoic Geography of the United States Phanerozoic |
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Global Jurassic tetrapod biochronology 99