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Oxygen Theory Of Mass Extinction Questioned By New Research Findings

Achilles Tang

By Achilles Tang,
in General Reefkeeping_

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Achilles Tang

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Several theories have been proposed by scientists to explain the two mass extinction events which took place on the earth 250 and 200 million years ago. The Permian-Triassic catastrophe (250 million years ago) was the worst of all five of the mass extinction events to ever have befallen the earth. It eradicated almost 95% of all species, 53% of marine families, 84% of marine genera and an approximated 70% of all land species including plants, insects and vertebrate animals.

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