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History 21 Online
OpenStudy (anonymous):

sequence of events of Earth's history for the Mesozoic and Cenozoic eras. I know that the Mesozoic Era is an interval of geological time from about 252 to 66 million years ago. and people also call it the Age of Reptiles, And I know that the Cenozoic Era is the current and most recent of the three Phanerozoic geological eras, following the Mesozoic Era and occupied period from 65 million years ago to the present

OpenStudy (anonymous):

yes that is true. and i think that the first humans started to form in the mezizioc era

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