Now more than 250 million years of the Permian and Triassic crossing the geological periods, the earth was shaken by the largest extinction known, disappearing when up to 96% of all marine species, 70% of terrestrial vertebrate species and insects disappeared almost entirely.
With this extinction, the full spectrum of biodiversity was so much affected, that the recovery of life on earth became, emphatically, the largest and most difficult objective faced nature. Restoring nature lasted about 10 million years after the event.
It's time horizon than the 10 million years, but finaly, the crisis of the late Permian, by far the most dramatic biological crisis that affected life on Earth, was triggered by a series of physical and environmental shocks, such as global warming, acid rain, ocean acidification, and finally, death by suffocation (anoxia) a marine life. These cases were sufficient to kill more than 90 percent of everything that lived then on land and sea.
Was extremely high which was then the turn in even life on our planet due to dismal conditions that were created and current research shows that these dire conditions have continued to meet, since the natural environment, causing numerous outbreaks that occurred while five to six million years after the initial crisis, the effect of increased carbon and oxygen repeated crises, increased warming and also other adverse effects, once burst, were uncontrollable and were have shown disastrous.
Much worse is the fact that after this devastating event, when life returned to normal gradually after several million years, it was possible a new beginning, significant elements that caused the disaster - global warming, acid rain, ocean acidification - sounds strangely familiar to us today.