The Jurassic Period.
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Dinosaurs then. |
The Jurassic Period was in the middle of the Mesozoic Era, somewhere around 200 million to 145 million years ago. In this era, dinosaurs roamed the Earth.
What was changed in that period?
More floods of lava occurred from fissures and volcanoes. There were more Archosaurian reptiles; the population of dinosaurs, pterosaurs, and marine reptiles all increased, gymnosperms were the most dominant plants, and small mammals began appearing.
What was changed from then to now?Dinosaurs now. |
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