Their whole splendid world, built on bones that were hollow and with paper-thin walls, has long since collapsed into dust. Scarcity is especially the rule for Quetzalcoatlus, which is known from ...

Quetzalcoatlus with its 40-foot wingspan was ... we can put skin on the bones of animals we will never see in our lifetimes,” said Dr. Natalia Jagielska, lead author of the study that solved ...