An article published in the journal “Royal Society Open Science” describes a research on the mouth and in particular the opening of the jaws of various dinosaurs belonging to the suborder of theropods (Theropoda). Many of them were carnivores and especially the famous ones such as the Tyrannosaurus rex or Allosaurus are generally depicted with their mouth wide open, in a menacing pose.

However, so far there had never been a study to understand how wide those animals could open their jaws. Research conducted by a team led by Dr. Stephan Lautenschlager of the University of Bristol showed a clear relationship between their diet and their maximum jaw gape.