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The first Quetzalcoatlus fossils were discovered in Texas from the Maastrichtian Javelina Formation at Big Bend National Park (dated to around 68 million years ago [1]) in 1971 by Douglas A. Lawson, who was then a geology graduate student from the Jackson School of Geosciences at the University of Texas, Austin.
Hatzegopteryx (A-B), Arambourgiania (C) and Quetzalcoatlus sp. (D-E) The largest known pterosaur was Quetzalcoatlus northropi, at 127 kg (280 lb) and with a wingspan of 10–12 m (33–39 ft). [375] Another close contender is Hatzegopteryx, also with a wingspan of 12 m (39 ft) or more. [375] This estimate is based on a skull 3 m (9.8 ft) long ...
A Mesozoic reptile is believed to have been the largest flying animal that ever existed: the pterosaur Quetzalcoatlus northropi, from North America during the late Cretaceous. This species is believed to have weighed up to 126 kg (278 lb), measured 7.9 m (26 ft) in total length (including a neck length of over 3 m (9.8 ft)) and measured up to ...
Lawson was at Big Bend searching for the bones of titanosaur sauropods, such as Alamosaurus, when the pterosaur bones, which he later named Quetzalcoatlus, were discovered. When the discovery of the fossils was reported in 1975, Quetzalcoatlus was the largest flying creature known to have lived. [3]
Size comparison of Q. northropi (green), Q. lawsoni. (blue), and a human. This is a list of pterosaurs with estimated maximum wingspan of more than 5 meters (16 feet): ...
Within Azhdarchoidea, two big groups have largely been consistent, the first one consisting of pterosaurs more closely related to tapejarids, such as Tapejara, while the second one comprising pterosaurs more closely related to azhdarchids, such as Quetzalcoatlus. Over the years, new clades within Azhdarchoidea have been named following the ...
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The outcrop, situated in the middle strata of the formation about 90 meters below the K-Pg boundary and within the local range of Alamosaurus fossils and below two sites that have yielded Quetzalcoatlus fossils, was dated to 69.0 plus or minus 0.9 million years old in 2010. [2] Indeterminate chasmosaurinae fossils have also been as well. [5]