"The skin appears to have internal structures inside of the scales," Clarke said. "These could be some kind of ligament attachments."

"A CAT scan of the skull, since it's so complete, could reveal the brain cavity, which could then tell us about the shape of its brain," said Richard Kissel, a dinosaur education specialist at the Field Museum in Chicago, who is not involved with the research. "It might then be determined how good the dinosaur's sense of smell and eyesight were."