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November 13 2012

Flying Dino Too Weak to Lift Off?


Bad news dragon riders: Your dragon can't take off.

A new analysis of the largest of pterodactyls suggests they were too big and their muscles too weak to vault into the air and fly. Instead, they were right at the upper limit of animal flight and needed a hill or stiff breeze so they could soar like hang gliders.

The new analysis was done on the enormous pterosaur Quetzalcoatlus from Late Cretaceous rocks of Big Bend, Texas. Quetzalcoatlus had a wingspan of about 35 feet (10.6 meters), or about the wingspan of a F-16 fighter. It was among the last pterodactyls to look down on dinosaurs 65 million years ago.

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