New Species of Tyrannosaur Dinosaur (IMAGE) University of New Mexico Caption Reconstruction of the outer layer of <i>Daspletosaurus horneri</i>, based on the distribution of texture on the facial bones. The face in tyrannosaurs was covered by an extensive mask of large, flat scales and regions of armor-like skin on the snout, jaws and ornamental horns. The large horn behind the eye was covered by horn, the same material that makes human fingernails. Credit @Dino 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.