Ancient flying reptiles may have lived alongside dinosaurs, but they weren't dinosaurs at all! Learn about the wonderfully wild world of pterosaurs, the kings of the sky during the age of the dinosaurs. Discover what made them so different from their land-dwelling counterparts and learn how scientists classify each different kind of pterosaur that has been discovered. From the smallest winged reptile, the peteinosaurus, to the biggest currently discovered, the Quetzalcoatlus, there's a lot to learn and discover about pterosaurs!.