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21 agos 1795455 año aC - A eurypterid became extinct about 408 million years agp

Descripción:

http://www.ucmp.berkeley.edu/arthropoda/chelicerata/eurypterida.html

Añadido al timeline:

laura nguyen timeline

26 oct 2018

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21 agos 1795455 año aC

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~ 1798675 years ago

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