The authors strengthened their claim by comparing the teeth of a close T. rex relative, the Daspletosaurus (which has yet to be included as a foe of Chris Pratt), with those of an American alligator. While the enamel on the external side of an alligator’s teeth tends to use down rapidly due to direct exposure to the aspects, the enamel of the Daspletosaurus tooth evidenced no such pattern. This recommends the possibility that the dino’s teeth were secured behind lips.
The last piece of proof the research study depends on is the resemblance in between particular functions of theropod dinosaur skulls and the skulls of lipped lizards like iguanas. While lipless crocodiles and alligators have little holes (called “dome pressure sensing unit pores”) over the whole of their snouts, lizards like iguanas have bigger holes (called “foramina”) lined up above their teeth. Theropod dinosaur skulls are more comparable to the latter, recommending that their facial structure was closer to that of lipped lizards.
Case closed? Well, just like whatever dinosaur-related, paleontologists draw their conclusions based upon ancient and insufficient information, and other dino scholars aren’t so sure about the entire T. rex lips circumstance.
