My all-time favorite pterosaur would be Quetzalcoatlus because it was one of the largest animals to ever fly in Earth’s skies. It had a forty foot wingspan and it was as tall as a giraffe when it walked on all fours. Despite its enormous size, this creature’s body was built to be extremely lightweight, which is very important when it comes to flying. In terms of diet, this beast feed on small animals, fish, and carrion. It is such a tragedy that this pterosaur joined the dinosaurs in the ash heap of history. If it was allowed to continue its evolution, it could have grown into an even larger flier possibly with a fifty or sixty foot wingspan. We will likely never see such a colossal flier again in our lifetime. One of my fictional dinosaur species in my dinosaur series will be as large as Quetzalcoatlus.