Where did Quetzalcoatlus live?

The Quetzalcotlus lived in the plains of Texas and hunted the small and helpless like dinosaur hatching's, they lived by their own rules and were not scared of anything they were brave enough to scope out a T-rex's nest and eat the hatching's. With a wing span of 40ft they could reach up to 30mph when flying and weighing 4oolb they had a hard time getting off the ground.