T. rex may have had lips like a modern lizard’s
Like most reptiles, the dinosaurs could have kept their chompers hidden
![An illustration of a Tyrannosaurus eating a smaller dinosaur with half of that dino's body visible.](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/03/032923_JB_dino-lips_feat.jpg?fit=1030%2C580&ssl=1)
A Tyrannosaurus engulfs a young Edmontosaurus with its huge, lipped mouth. Dinosaurs like Tyrannosaurus have long been portrayed as lipless, but new research suggests this wasn’t so.
Mark P. Witton