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6 dic 520 año aC - признак начала Палеозойской эры. В многочисленных мелководных морях процветали морская флора и фауна. Особенно широко были распространены трилобиты.

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Водопьянова Олеся ЭБ17-02Б

ByОлеся Водопьянова
28 oct 2018

fecha:

6 dic 520 año aC
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~ 2547 years ago
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