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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]
Diagram showing specialized skulls and teeth of various ctenochasmatid pterosaurs. Compared to the other vertebrate flying groups, the birds and bats, pterosaur skulls were typically quite large. [24] Most pterosaur skulls had elongated jaws. [24] Their skull bones tend to be fused in adult individuals. [24]
Thanatosdrakon is known from two specimens, the holotype, consisting of a partial postcranial skeleton, and the paratype, consisting of a left humerus. The holotype includes material that is previously undescribed in giant azhdarchid pterosaurs. Thanatosdrakon was a giant pterosaur.
Due to the skeleton's initial description only being partial, a more detailed description of was made in 2005 by Currie and Eva Koppelhus. [7] [2] This partial skeleton, specimen TMP 1992.83, lacks the skull and consists of a fourth cervical (neck) vertebra, a rib, a humerus, a pteroid (wing) bone, a fourth metacarpal, a tibia and a metatarsal ...
Skeletal diagrams showing Zhejiangopterus (left, as preserved without skull, right, as reconstructed), one of the two other azhdarchids known preserved with a relatively complete neck (the other is Quetzalcoatlus)
Cast of an assigned wrist bone. The first pterosaur remains from Romania were identified by Franz Nopcsa in 1899, and the first remains of Hatzegopteryx were found during a student dig in the late 1970s from the upper part of the Middle Densuş Ciula Formation of Vălioara, northwestern Hațeg Basin, Transylvania, western Romania, which has been dated to the late Maastrichtian stage of the ...
T. navigans skeleton showing soft tissue crest impression. Tupandactylus imperator is known from four nearly complete skulls. The holotype specimen is MCT 1622-R, a skull and partial lower jaw, found in the Crato Formation, dating to the boundary of the Aptian-Albian stages of the early Cretaceous period, about 112 Ma ago. [1]