jan 1, 251900000 BC - Permian–Triassic extinction event
Description:
It is Earth's most severe known extinction event, with the extinction of 57% of biological families, 83% of genera, 81% of marine species and 70% of terrestrial vertebrate species. It is also the greatest known mass extinction of insects. It is the greatest of the "Big Five" mass extinctions of the Phanerozoic.Added to timeline:
Date:
jan 1, 251900000 BC
Now
~ 5883516 years ago