illustration shows t. rex skull with its true eye socket shape compared to skull with circular eye socket, which can hold a far larger eyeball

Not just tiny arms: T. rex also had super small eyes to accommodate its big bite

The powerful jaws of Tyrannosaurus rex snapped together with such force that they would splinter the bones of the dinosaur’s prey. But to gain such a powerful bite, the king of the dinosaurs had to make an evolutionary trade-off: It had to settle for smaller eyes.

Based on an analysis of 410 fossilized reptile specimens from the Mesozoic period (252 to 66 million years ago), a scientist concluded that T. rex and other flesh-eaters of similar ilk evolved smaller, narrower eyes over time, likely to compensate for their bites becoming more and more forceful. In particular, carnivores with skulls longer than 3.2 feet (1 meter) tended to have elongated, keyhole-like eye sockets — or orbits — as adults, while the carnivores’ young offspring and herbivores of all ages had circular eye sockets. 

#tiny #arms #rex #super #small #eyes #accommodate #big #bite

Leave a Comment

Your email address will not be published.