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Quetzalcoatlus (/ k ɛ t s əl k oʊ ˈ æ t l ə s /) is a genus of azhdarchid pterosaur that lived during the Maastrichtian age of the Late Cretaceous in what is now North America. The first specimen, recovered in 1971 from the Javelina Formation of Texas, United States, consists of several wing fragments.
Buffetaut and colleagues suggested that, in order to fly, the skull weight of Hatzegopteryx must have been reduced in some way. The necessary weight reduction may have been accomplished by the internal structure of the skull bones, which were full of small pits and hollows (alveoli) up to 10 mm (0.39 in) long, separated by a matrix of thin bony ...
Azhdarchidae (from the Persian word azhdar, اژدر, a dragon-like creature in Persian mythology) is a family of pterosaurs known primarily from the Late Cretaceous Period, though an isolated vertebra apparently from an azhdarchid is known from the Early Cretaceous as well (late Berriasian age, about 140 million years ago). [1]
Although it is widely thought that Quetzalcoatlus reached the size limit of a flying animal, the same was once said of Pteranodon. The heaviest living flying animals are the kori bustard and the great bustard with males reaching 21 kilograms (46 lb).
Katsufumi Sato, a Japanese scientist, did calculations using modern birds and concluded that it was impossible for a pterosaur to stay aloft. [159] In the book Posture, Locomotion, and Paleoecology of Pterosaurs it is theorized that they were able to fly due to the oxygen-rich, dense atmosphere of the Late Cretaceous period. [161]
The Quetzalcoatlus' huge wings hamper its escape in the forest as the T. rex bites its foot. The Quetzalcoatlus pecks at the T. rex's eye and flies away. One hatchling survives the attack. Two T. Rexes hear a mating fight between two Triceratops and attack the loser. Working together, they bring down the Triceratops and eat it.
Fear isn’t rare—we all have things we’re scared of, whether that’s heights (hey!), spiders, open water, snakes, or, well, anything and everything. A phobia you may have heard a little less ...
Azhdarchoidea (or azhdarchoids) is a group of pterosaurs within the suborder Pterodactyloidea, more specifically within the group Ornithocheiroidea.Pterosaurs belonging to this group lived throughout the Early and Late Cretaceous periods, with one tentative member, Tendaguripterus, that lived in the Late Jurassic period.