rex-around seven tons-along with the mechanical properties of bone. Sellers and his team developed their new model using the total body weight of a T. A bone can only handle so much pressure while running before it shatters. One of the new factors taken into account in this model was bone stress. Just looking at morphology alone won’t get you there,” says John Hutchinson, an evolutionary biomechanics expert at the Royal Veterinary College in London who was not involved in the study. “You need to put all parts together to get a full picture. ( Also see our best look yet at a tyrannosaur’s face.) With the advent of more complex biomechanical models, though, scientists can get much closer to an answer. ( Here’s what it would feel like to pet a T. rex limbs to ostrich limbs, for instance, it stood to reason that the 40-foot-long dinosaur could have been quick. rex skeleton and say it proved that the dinosaur was either fast or slow. Slow and Steadyĭecades ago, paleontologists would point to individual parts of the T. Any faster, and its bones would have shattered. rex probably could only reach around 12 miles an hour. According to paleontologist and National Geographic grantee Jack Horner, it also stands to reason that dinosaurs had similar courting behaviors as today’s birds.Īccording to their results, published this week in the journal PeerJ, the lower end of the estimate is more accurate: T. Fossil research has shown that birds and dinosaurs shared behaviors such as brooding and nest building.
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