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Himalayasaurus

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Himalayasaurus Temporal range: Late Triassic, 215.56–212.0 Ma^[1] PreꞒ Ꞓ O S D C P T J K Pg N ↓

Life reconstruction of Himalayasaurus tibetensis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Ichthyosauria
Family:	†Shastasauridae
Genus:	†Himalayasaurus Dong, 1972
Type species
†Himalayasaurus tibetensis Dong, 1972

Himalayasaurus is an extinct genusofichthyosaur from the Late Triassic Qulonggongba FormationofTibet. The type species Himalayasaurus tibetensis was described in 1972 on the basis of fragmentary remains, including teeth, limb bones, and vertebrae.^[2] The entire body length of Himalayasaurus is estimated to have been over 15 metres (49 ft) in length.^[3] Himalayasaurus has since been considered a nomen dubium or "dubious name" because of the lack of features that set it apart from other ichthyosaurs,^[4] although the presence of distinct cutting edges on its teeth have more recently been proposed as a unique feature of the genus (cutting edges have also been found in the ichthyosaur Thalattoarchon from the western United States).^[5] Himalayasaurus belongs to the family Shastasauridae, which includes other large-bodied Triassic ichthyosaurs like Shonisaurus.^[3]

References[edit]

^ "†Himalayasaurus Dong 1972 (ichthyosaur)". Paleobiology Database. Fossilworks. Retrieved 11 August 2017.

^ Dong, Z.-M. (1972). 珠穆朗玛峯地区的鱼龙化石 [An ichthyosaur fossil from the Qomolangma (Mt. Everest) region]. In Young, C. C.; Dong, Z.-M. (eds.). 中国三迭纪水生爬行动物 [Aquatic Reptiles from the Triassic of China]. Memoirs of the Institute of Vertebrate Paleontology and Paleoanthropology (in Chinese (China)). Vol. 9. pp. 7–10.

^ ^a ^b Motani, R.; Manabe, M.; Dong, Z.-M. (1999). "The status of Himalayasaurus tibetensis (Ichthyopterygia)" (PDF). Paludicola. 2 (2): 174–181. Archived from the original (PDF) on 2016-03-05. Retrieved 2013-01-07.

^ Lucas, S.G.; González-León, C.M. (1995). "Ichthyosaurs from the Upper Triassic of Sonora and the biochronology of Triassic ichthyosaurs". Geological Society of America Special Papers. 301: 17–20.