Illustration of an <i>ankylosaur</i> (IMAGE) Canadian Museum of Nature Caption This is an illustration of Euoplocephalus, an ankylosaur. Ankylosaurids are sometimes called the 'tanks of the Cretaceous' given their squat bodies and armored hides. Credit Brett Booth © Brett Booth Usage Restrictions Illustration to be used in association with this story about ankylosaur fossils. 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.