Ocean Acidification triggered the Great Dying about 250 million years ago annihilating 90 per cent of marine species

April 10, 2015 6:10 PM

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A new study has found that acidic oceans triggered the greatest extinction of all time 252 million-years-ago which saw annihilation of 90 per cent of marine species and more than two-thirds of the terrestrial animals at the time. Research now suggests that the Permian-Triassic extinction event — aptly called the “Great Dying” — was caused, at least in part, by ocean acidification.

“Scientists have long suspected that an ocean acidification event occurred during the greatest mass extinction of all time, but direct evidence has been lacking until now,” lead author Matthew Clarkson, a geochemist at the University of Otago in Dunedin, New Zealand, said in a statement.

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