Ferocious theropod dinosaurs had skin that covered their teeth, new research suggests.
The research team studied tooth wear across a range of theropod species and compared it to the state of tooth wear in modern reptilian groups that both have and lack coverings for their teeth, such as alligators, iguanas, and monitor lizards. Their research isTechnically, the soft tissue tooth coverings are actually labial scales, not lips in the mammalian sense. They’re more akin to the soft tissue structures on a Komodo dragon, the extant, endangered monitor lizard native to Indonesia.
“Besides the idea that the teeth would be too large to be covered, the closest living toothed relatives of dinosaurs are crocs, hence the incorrect assumption that the same condition prevailed in theropods,” Robert Reisz, a paleontologist at the University of Toronto and co-author of the paper, wrote in an email to Gizmodo. “As the paper shows, however, ancient terrestrial crocs had theropod-like teeth, rather than the peculiar teeth of living crocs.
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