Pterosaurs were highly successful reptiles that lived between 210 and 65 million years ago. They were the first vertebrates to evolve powered flight, but their origin has remained an unresolved enigma in paleontology since the 19th century. With the help of pterosaur skulls and skeletons that were unearthed in North America, Brazil, Argentina, and Madagascar in recent years, a team of paleontologists has now demonstrated that flightless dinosaur precursors...
