Where Dragons Come From "With fiery breath, razor-sharp claws, scales as hard as shields and a vast underground lair, ... where did the idea for such a bizarre beast - with such an odd mixture of traits - come from in the first place?" Probably not from dinosaur fossils, for starters. (Merlin, the wizard of the King Arthur stories, does seem to have a role, though.)
The Wall Street Journal 11/03/12