...But the biggest flyining reptilian wasn't the Quetzalcoatlus or the Hatzegopteryx with 36-40 ft wingspan? (yeah! i know, pretty impossible name here).
This is not a dragon it's a wyvern. A dragon has 4 legs and a set of wings, and not just 2 legs and 2 wings. And btw, Skyrim also has wyverns instead of dragons, lies everywhere.
All according to the definitions set down in one single fantasy franchise. Ease back.