Gliding on its leathery wings, Eudimorphodon was one of the first pterosaurs to take to the skies. Its front limbs had grown very long, its fourth fingers had stretched out, and together they formed the front edges of a pair of wings. Thin membranes of skin and muscle stretched back toward its hind legs. Powered by strong chest and arm muscles, these reptiles became masters of the air.
■ When: 210 million years ago (Late Triassic)
■ Fossil location: Italy, Greenland
■ Habitat: Coasts
■ Length: 3 ft (1 m)
■ Diet: Fish
This small reptile is one of the earliest pterosaurs. It had a long tail and a short neck, features that were lost in later species of pterosaur. Eudimorphodon glided through the skies, snatching fish near the surface of the water and probably insects, too. A diamond-shaped flap at the end of its bony tail helped it to steer while in flight.
Eudimorphodon had more than 100 teeth packed into a jaw that was as short as a human finger. The front teeth were like fangs and faced outward, making it easier to catch slippery fish. The rear teeth had many little points, like human cheek teeth, that helped Eudimorphodon to chew its food.