The max speed of a Tyrannosaurus rex was about 12 mph, according to scientists at University of Manchester. (Reuters) Fifty years ago, if you'd asked the dinosaur experts, they would have told you that Tyrannosaurus rex was a speed freak — a giant predator that could outrun racehorses. The paleontologists would have pointed to its 3-meter hind limbs, leggy for even a big dinosaur, and described the creature as sprinting after prey at speeds of 40 mph. But a better understanding of physics kneecapped the swift T. rex concept. Scientists, rather than looking at the bones alone, began to gauge dinosaur locomotion via models of skeletons and muscles. The picture that came into focus was a slower beast: T. rex, although no less of a predator, was certainly less fleet of foot. read more https://www.washingtonpost.com/news...t-was-a-speedy-walker/?utm_term=.7bcb81ee297c