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20 авг 488300000 г. до нашей эры - 1st mass extinction: Ordovician Period

Описание:

http://www.ucmp.berkeley.edu/ordovician/ordovician.php

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Science Period 5 timeline

26 окт 2018

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20 авг 488300000 г. до нашей эры

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~ 5883516 г назад

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