FANEROZOICO panel - Quetzalcoatlus lurking Quetzalcoatlus lawsoni is a genus of azhdarchid pterosaur known from the Late Cretaceous Maastrichtian age of North America. They were the largest known flying animals of all time, is a family of advanced toothless pterosaurs with unusually long, stiffened necks and giant wingspans. There have been a number of different ideas proposed about the lifestyle of Quetzalcoatlus.One of them is that they scavenged, similar to the marabou stork (which will scavenge, but is more of a terrestrial predator of small animals).