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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 North America. The type specimen, recovered in 1971 from the Javelina Formation of Texas, United States, consists of several wing fragments and was described as Quetzalcoatlus northropi in 1975 by Douglas Lawson.
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]
Lawson began his synecological research during his master's degree studying the paleoecology of the Tornillo Formation in Big Bend National Park, Texas.During his study of this Late Cretaceous intermontane basin community, he discovered the fossil remains of the giant pterosaur, Quetzalcoatlus Northropi, which he named in honor of John K. Northrop because of its similarity to Northrop's flying ...
Cryodrakon rivaled Quetzalcoatlus, which also inhabited North America at the time, as the largest of the pterosaurs, which were cousins of the dinosaurs. Both had large heads with large toothless ...
They did claim it could have been twelve metres or more in wingspan but that was based on an estimated wingspan for Quetzalcoatlus itself of 11-12 metres. So when estimates for Quetzalcoatlus go down, Hatzegopteryx automatically shrinks with it. Witton's last published estimate for Quetzalcoatlus was a "mere" 9.64 metres.
Florida’s premier expert on the pesky insects weighs in.
The Tlaxcalteca, along with other city-states across the Plain of Puebla, then supplied the auxiliary and logistical support for the conquests of Guatemala and West Mexico while Mixtec and Zapotec caciques (Colonial indigenous rulers) gained monopolies in the overland transport of Manila galleon trade through Mexico, and formed highly lucrative ...
Florida’s current law banning most abortions after 15 weeks was passed prior to the Supreme Court’s momentous ruling. But the state could go further. But the state could go further.