I WONDER - How Big Was The Quetzalcoatlus?

The Ketzel Cutlass was a massive pterosaur from the Late Cretaceous period, about 68 million years ago, in North America. It had a wingspan over 30 feet, making it one of the largest flying animals. On the ground, it stood as tall as a giraffe, with a long neck and specialized bones for flight.

In which region of the world did the Ketzel Cutlass live?

What is the significance of the specialized airfoil bones in the Ketzel Cutlass?