1. 
   Quetzalcoatlus
   Quetzalcoatlus (pronounced KET-sal-koh-AHT-lus) was a giant pterosaur from the late Cretaceous period , and the largest flying animal ever. It was named by Lawson in 1975. Classification: Pterodactyloidea, Azhdarchidae.
   Found op http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
   
   
2. 
   Quetzalcoatlus
   (from the article `Cretaceous Period`) In the air, the flying reptiles called pterosaurs dominated. One pterosaur, Quetzalcoatlus, from the latest Cretaceous of what is now Texas (U.S.), ...
   Found op http://www.britannica.com/eb/a-z/q/7
   
   
3. 
   Quetzalcoatlus
   Quetzalcoatlus (s) was a pterodactyloid pterosaur known from the Late Cretaceous of North America (Maastrichtian stage, about 68–65.5 million years ago), and one of the largest known flying animals of all time. It was a member of the Azhdarchidae, a family of advanced toothless pterosaurs with un...
   Found op http://en.wikipedia.org/wiki/Quetzalcoatlus
   
   

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