u/Impressive_Guy188

I know it might sound a bit like nonsense, but people always think that middle age people just looked at massive dinosaur bones, mistook them for dragons, and made up their lore. But as we know, dinosaurs are actually the ancestors of birds.

With evolution processing over such a long period of time ( 300.000 years for human to appear ), what if there was another branch of dinosaurs that became bird like creatures and survived much longer but then became extinct early on?

This would perfectly explain why dragons in many different countries have reptile skin but also fur or manes. Because their bones became hollow (like birds), they wouldn't fossilize well and that branch eventually went extinct.