Tropical collapse in Early Triassic caused by lethal heat: Extreme temperatures blamed for 'Dead Zone'
Thursday, October 18, 2012 - 14:00
in Paleontology & Archaeology
Scientists have discovered why the 'broken world' following the worst extinction of all time lasted so long -- 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, a mass extinction is followed by a 'dead zone' during which new species are not seen for tens of thousands of years. In this case, the dead zone, during the Early Triassic period which followed, lasted for a perplexingly long period: five million years.