Major Extinction Events (IMAGE) University of Bristol Caption Summary of major extinction events through time, highlighting the new, Carnian Pluvial Episode at 233 million years ago. Credit D. Bonadonna/ MUSE, Trento Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.