Pterosaur: could they fly as soon as they hatched Pterosaurs were the first vertebrates to attain powered flight, and lived between 228 and 66 million years ago. They aren't on the line to modern birds, which evolved well after pterosaurs appeared, and they appear to have gone extinct without leaving descendants. Often called "pterodactyls" or "flying dinosaurs", they weren't really in the group that included dinosaurs. As you almost certainly know, they looked like this: (from Wikipedia ): While learning about these creatures this morning, I found that some of them were huge—as big as giraffes when they stood upright! One of them, Quetzalcoatlus northropi , had a wingspan of up to 16 meters, or 52 feet! Here's some diagrams of that creature (the first two are from Wikipedia ): It was a big as a small plane! Here's a comparison of Q. northropi with a Cessna 172 light aircraft: Ambling about on four limbs, they are estima
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