The tyrant's mouth - 19 Mar 2012
How T.rex ate
Tyrannosaurus rex has got to be one of the most heavily-studied dinosaurs, but clearly there's still a lot to be learned. The T.rex dentition has been looked at many times, but this new paper focuses on the serration and angling of the teeth rather than simply the size and positioning. See the article here for more details.
Unlike those of some large therapods, tyrannosaurs' teeth were broad and round in cross-section. The risk in having bladed teeth - like those of Carcharodontosaurus, for example - is that they may snap if the prey struggles. The short arms of tyrannosaurs meant they would not really be able to hold their prey still when making the kill, so perhaps sturdier teeth were necessary.