Why aren't pterosaurs classed as dinosaurs? - BBC Science Focus Magazine

Quetzalcoatlus and Other Giant Pterosaurs were Short-Range Flyers

Pterosaurs Flight In The Age of Dinosaurs Exhibit Catalogue

Why a Pterosaur is Not a Dinosaur, Science

How Did Pteranodon Walk?

The evolution of depictions of Quetzalcoatlus, showing that the genus (and azhdarchids in general) were pterosaurs that hunted on foot rather than being aerial predators like most (though not all) predatory birds.

Pteranodons

Pterodactyl or Pteranodon flying over the ocean, Stock Photo, Picture And Low Budget Royalty Free Image. Pic. ESY-061325401

Flying Dinosaurs': The Prehistoric Rulers of the Sky

The Myth of the Bat Wing Pterosaur

Australia's Oldest Pterosaur Bones Prove They Soared Below The Antarctic Circle