Quetzalcoatlus /kɛtsəlkoʊˈætləs/ is a pterosaur known from the Late Cretaceous of North America (Maastrichtian stage) and one of the biggest known flying animals of all time. It is a member of the family Azhdarchidae, a family of advanced toothless pterosaurs with unusually long, stiffened necks. Its name comes from the Aztec feathered serpent god, Quetzalcoatl. The type and only species is Q. northropi.
The Animated Documentary Series was based on the other documentary dinosaur tv shows which is Walking with Dinosaurs, Dinosaur Planet, Planet Dinosaur, and Dinosaur Revolution. featuring 22 episodes