Smallest and Largest Caseid (IMAGE) PLOS Caption Smallest and largest caseid: This is a reconstruction of 300 million year old tiny carnivorous Eocasea in the footprint of 270 million year old largest known herbivore of its time, Cotylorhynchus. Credit Danielle Dufault Usage Restrictions Danielle Dufault 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.