Earth’s ‘dead zone’ was way too hot
The “dead zone” period that followed the worst extinction of all time lasted 5 million years because it was simply too hot to survive.
The end-Permian mass extinction, which occurred around 250 million years ago in the pre-dinosaur era, wiped out nearly all the world’s species. Typically, the period during which new species are not seen following a mass extinction lasts for tens of thousands of years—not 5 million.
“Global warming has long been linked to the end-Permian mass extinction, but this study is the first to show extreme temperatures kept life from re-starting in Equatorial latitudes for millions of years,” says lead author Yadong Sun, who is based at the University of Leeds.
Full story at Futurity.
More research news from top universities.
Photo credit: FotoliaPosted by Futurity