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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.
Azhdarchids are mainly known for including some of the largest flying animals discovered, but smaller cat-size members have also been found. [2] Originally considered a sub-family of Pteranodontidae , Nesov (1984) [ 3 ] named the Azhdarchinae to include the pterosaurs Azhdarcho , Quetzalcoatlus , and Titanopteryx (now known as Arambourgiania ).
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). [378] Another close contender is Hatzegopteryx, also with a wingspan of 12 m (39 ft) or more. [378] This estimate is based on a skull 3 m (9.8 ft) long ...
However, its specific location within the group has been somewhat disputed. One of the closest relatives of Arambourgiania is Quetzalcoatlus, as both pterosaurs have consistently been found together in multiple phylogenetic analyses, either as sister taxa or close to each other.
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]
A troodontid theropod who is known from fossil teeth. Fossils have also been found in the Lance Formation in Wyoming. Pectinodon [96] [95] P. bakkeri [96] [95] Montana; UCM 38445, a fossilized tooth. Teeth of this genus have been found too. A troodontid theropod who is known from fossil teeth. Fossils have also been found in the Lance Formation ...
Holy dwarf geckos were found in “evergreen forest patches” near a temple, the study said. The nocturnal lizards emerged from “low stone walls and rock crevices” after dusk.
They assigned it to Quetzalcoatlus northropi and mistakenly identified it as a femur. A wingspan of 13 m (43 ft) was estimated. A wingspan of 13 m (43 ft) was estimated. [ 5 ] [ 2 ] However, nowadays, wingspan estimates for Q. northropi have been more moderate, at around 10 to 11 m (33 to 36 ft), which would still make it one of the largest ...