An enormous cache of almost 20,000 fossils, exemplifying a near complete ecosystem from the Triassic period, has given scientists a rare view into life after a mass extinction.After massive volcanic eruptions and devastating global warming wiped out 90 percent of life on earth nearly 250 million years ago, life found itself on the brink of nonexistence, according to Yahoo news.The discovery of these fossils gives the clearest look into life after the cataclysmic end-Permian events.