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Massive die-off may have occurred 2B years ago
9/4/2019

Researchers have found clues that point to a massive die-off of single-celled organisms that existed on Earth about 2 billion years ago, according to findings published in Proceedings of the National Academy of Sciences. "This shows that even when biology on Earth is comprised entirely of microbes, you can still have what could be considered an enormous die-off event that otherwise is not recorded in the fossil record," said study author Malcolm Hodgskiss.

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