Full of hot air: The T-rex had more air space
than brain cavity
The researchers said the air
spaces could have lightened the dinosaurs' heads by as much as 18 per
cent, than if they had been fully solid structures.
estimated that a fully fleshed-out T.rex head weighed more than
1,100lbs (500kg) and would have weighed a couple of hundred pounds more
saving could have helped the predators to move around, put on more
bone-crushing muscle and even take larger prey.
'Sinuses may be performing different roles in different
species,' Mr Witmer said.