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The top documents tagged [age of reptiles gymnosperms]
13 Chapter 13 Earth’s History. Precambrian History 13.1 Precambrian Time 4.56 billion years ago until the start of the Cambrian period, over 4 billion
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Geologic Time Scale. Mesozoic Era 13.3 Mesozoic Era: Age of Reptiles Dinosaurs were land-dwelling reptiles that thrived during the Mesozoic era. Mesozoic
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18.2 Precambrian Time: Vast and Puzzling
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