The Jurassic version of jumbo jets — huge flying creatures weighing hundreds of pounds is a mystery of dinosaur-era flight: How did something so big get off the ground? What people think of as flying dinosaurs but are technically giant reptiles didn't launch into the air like birds they leap into the air off all four legs, informed as from the university’s Center for Functional Anatomy and Evolution. Only vampire bats do something like that. The flying creatures are called pterosaurs. They were a group of flying reptiles that could weigh more than 500 pounds and have bus-sized wingspans. Last year, researchers tried to figure out how they got off the ground by looking at the largest bird now flying, the albatross. They concluded that anything much bigger couldn't get off the ground the same way.
In birds, the hind legs were stronger than the front and in pterosaurs the front legs were several times stronger than the hind ones. It’s a lot like a leap frog; they kind of pitch forward at first, the legs kick off first, and then the arms take off. That allowed some of the giants to get into the air in less than a second. It is calculated that the 550-pound pterosaur, Hatzegopteryx thambema, launched at a speed of 42 miles per hour.
In birds, the hind legs were stronger than the front and in pterosaurs the front legs were several times stronger than the hind ones. It’s a lot like a leap frog; they kind of pitch forward at first, the legs kick off first, and then the arms take off. That allowed some of the giants to get into the air in less than a second. It is calculated that the 550-pound pterosaur, Hatzegopteryx thambema, launched at a speed of 42 miles per hour.