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A comment on Lost Advanced Civilizations. Parent comment

Re:Lost Advanced Civilizations by hansbo on Wednesday August 19, 2020 @03:14AM (#24207964)
Eukaryote life did not appear until after the Oxygen Catastrophe though.
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Re:Lost Advanced Civilizations by madhadron on Sunday August 23, 2020 @09:22PM (#24256785)
That's true, but how much earlier might it have occurred if the oxygen catastrophe had not occurred and caused a mass extinction? Hard to say...
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