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1ºSeres vivos con registro fósil. 1ºContinentes y océanos. Atmósfera secundaria. Producción de O2 fotosintético. (4h 44min, mar 4, 2500 y – 8h 30min, aug 21, 4500 y)
Added to timeline:
21 Nov 2017
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Date:
4h 44min, mar 4, 2500 y
8h 30min, aug 21, 4500 y
~ 2001 years
