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Size comparison of a human to Q. northropi (green) and Q. lawsoni (blue) When it was first named as a new species in 1975, scientists estimated that the largest Quetzalcoatlus fossils came from an individual with a wingspan as large as 15.9 m (52 ft). Choosing the middle of three extrapolations from the proportions of other pterosaurs gave an ...
Size comparison of Hatzegopteryx (red) with Pelagornis sandersi (orange) and royal albatross (green). The size of Hatzegopteryx was initially estimated by comparing the 236 mm (9.3 in) humerus fragment with that of Quetzalcoatlus northropi, which has a 544 mm (21.4 in)-long humerus.
Many pterosaurs were small but the largest had wingspans which exceeded 9 m (30 ft). The largest of these are estimated to have weighed 250 kilograms (550 lb). For comparison, the wandering albatross has the largest wingspan of living birds at up to 3.5 m (11 ft) but usually weighs less than 12 kilograms (26 lb).
The largest known bird of prey ever was the enormous Haast's eagle (Hieraaetus moorei), with a wingspan of 2.6 to 3 m (8 ft 6 in to 9 ft 10 in), relatively short for their size. [519][520] Total length was probably up to 1.4 m (4 ft 7 in) in female [521] and they weighed about 10 to 15 kg (22 to 33 lb). [522]
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). They ...
Specimen TMP 1980.16.1367, originally mistaken as a leg bone in 1982, is a fifth neck vertebra with an estimated original length of 50 centimeters (1.6 ft), indicating an animal equal in size to the holotype of Quetzalcoatlus northropi, [1] the wingspan of which has been initially estimated at 13 meters (43 ft), [5] but then moderated at 10 ...
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 ...
The relative size of the hands and feet in pterosaurs (by comparison with modern animals such as birds) may indicate the type of lifestyle pterosaurs led on the ground. Azhdarchid pterosaurs had relatively small feet compared to their body size and leg length, with foot length only about 25–30% the length of the lower leg.