The Ocean in Devonian times (IMAGE) U.S. National Science Foundation Caption The ocean in Devonian times: is the past a prologue in biodiversity collapse? Credit University of Michigan Museum of Paleontology 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.