Shieldcroc Illustration (IMAGE) University of Missouri-Columbia Caption MU assistant professor Casey Holliday nicknamed Aegisuchus witmeri “Shieldcroc” because of its thick skinned shield. Credit Henry Tsai/University of Missouri 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.