The term 'Flying Dinosaur' is often used to refer to the Pterodactyl, an extinct species of flying reptile that lived during the late Jurassic and Cretaceous periods. Pterodactyls had wings made of skin stretched between their long fourth finger and their body, and were the first vertebrates known to have evolved powered flight. They were also the largest flying animals of all time, with some species having wingspans of up to 10 meters.