Genus

Valid Extinct

Jaxartosaurus

Riabinin 1937

Jaxartosaurus is a genus of hadrosaurid dinosaur similar to Corythosaurus which lived during the Late Cretaceous. Its fossils were found in Kazakhstan.

Temporal range

Triassic

Jurassic

Cretaceous

Paleogene

Neogene

252 201 145 66 0 Ma

PBDB occurrences

Group

Dinosaures

Herbivore Ground dwelling, gregarious Terrestrial

click to enlarge

Reconstructed skull of Jaxartosaurus aralensis Riabinin, 1937. Only a posterior portion of the skull, as well as a surangular is known, with the rest of the skull being based mostly upon File:Aralosaurus skull.png. Jaxartosaurus is currently classified as a basal lambeosaurine, more derived than Aralosaurini, but more primitive than Parasaurolophini and Lambeosaurini. It might be more derived than Tsintaosaurini (Godefroit et al., 2004). References: Riabinin, A.M. (1937). "A New Finding of Dinosaurs in the Trans-Baikal Region". Ezhegodn. Vserossijskogo Palaeont. Obstcg. 11: 142–144 Godefroit, P.; Bolotsky, Y.L.; Van Itterbeeck, J. (2004). "The lambeosaurine dinosaur Amurosaurus riabinini, from the Maastrichtian of Far Eastern Russia". Acta Palaeontologica Polonica 49(4): 585–618 © I. Reid · CC0 · Wikimedia

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Classification

Dinosauria Unranked clade

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Ornithischia Unranked clade

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Neornithischia Unranked clade

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Pyrodontia Unranked clade

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Cerapoda Unranked clade

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Ornithopoda Suborder

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Iguanodontia Infraorder

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Euiguanodontia Unranked clade

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Dryomorpha Unranked clade

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Ankylopollexia Unranked clade

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Styracosterna Unranked clade

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Hadrosauriformes Unranked clade

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Hadrosauroidea Unranked clade

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Hadrosauridae Family

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Lambeosaurinae Subfamily

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Jaxartosaurus Genus

Fossil sites 2 geolocated sites

Distribution

Top countries

🇨🇳 China

🇰🇿 Kazakhstan

Geological formations

Ulungar

Dabrazhin

Temporal distribution

Campanian (83.6–72.2 Ma)

Coniacian (89.8–85.7 Ma)

Species (2)

Jaxartosaurus aralensis 90 Ma

Jaxartosaurus fuyunensis nomen dubium, species not entered Jaxartosaurus

Synonyms (1)

Jaxartosaurus fuyunensis nomen dubium, species not entered Jaxartosaurus

Images 1

Bibliography

Original description

A. N. Riabinin. 1937. O nakhodke shlemonosnykh form Dinosauria verkhnemelovykh otlozheniyakh yuzhnogo Kazakhstana [The discovery of crested forms of Upper Cretaceous dinosaurs in southern Kazakhstan]. Priroda 1937(9):91

Bibliography (2)

S. Z. Wu. 1973. [A fossil Jaxartosaurus is discovered in Xinjiang]. Vertebrata PalAsiatica 11(2):217-218

A. N. Riabinin. 1938. Some results of the studies of the Upper Cretaceous dinosaurian fauna from the vicinity of the station Sary-Agach, South Kazakhstan. Problems of Paleontology 4:125-135