Arstanosaurus

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Arstanosaurus
Temporal range:
Ma
Juvenile Gadolosauraus skeleton
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Ornithischia
Clade: Ornithopoda
Superfamily: Hadrosauroidea
Genus: Arstanosaurus
Shilin & Suslov, 1982
Species:
A. akkurganensis
Binomial name
Arstanosaurus akkurganensis
Shilin & Suslov, 1982

Arstanosaurus (meaning "Arstan lizard" after the

ceratopsid, or both at the same time (chimeric
).

History

The genus was based on a partial left

Qyzylorda and were named and described as Arstanosaurus akkurganensis in 1982.[1] This is not much material for naming a new genus, and it was largely ignored until the mid-1990s, when the hypothesis that it was really a ceratopsid appeared.[2] Shortly thereafter, a new revision appeared that showed that the characteristics listed as unusual for Arstanosaurus were really based on perspective, and that the maxilla was from an animal like Bactrosaurus, albeit indeterminate (a dubious name). The femur was uninformative.[3] It was regarded as an indeterminate hadrosaurid in the most recent review.[4]

Diagnostic hadrosauroid remains from the same area have in 2012 been named as Batyrosaurus.[5]

A hadrosauroid from the

Gadolosaurus") has at times been identified as Arstanosaurus, but is clearly a distinct genus.[6][7][8]

Paleobiology

As a hadrosaurid, Arstanosaurus would have been a

quadrupedal herbivore, eating plants with sets of ever-replacing teeth stacked on each other.[4]

See also

References

  1. ^ Shilin, F.V., and Suslov, Y.V. (1982). A hadrosaur from the northeastern Aral Region. Paleontological Journal 1982(1):132-136 [translated version].
  2. ^ Nesov, L.A. (1995). Dinozavri severnoi Yevrasii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii [Dinosaurs of Northern Eurasia: new data about assemblages, ecology and paleobiogeography]. Scientific Research Institute of the Earth's Crust. St. Petersburg State University:St. Petersburg, Russia, 156 pp. + 14 pl. [Russian].
  3. ^ Norman, D.B., and Kurzanov, S.M. (1982). On Asian ornithopods (Dinosauria: Ornithischia). 2. Arstanaosaurus akkurganensis Shilin and Suslov, 1982. Proceedings of Geologists' Association 108(3):191-199.
  4. ^ .
  5. ^ Pascal Godefroit, François Escuillié, Yuri L. Bolotsky & Pascaline Lauters, 2012, "A New Basal Hadrosauroid Dinosaur from the Upper Cretaceous of Kazakhstan". In: Godefroit, P. (eds). Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems. Indiana University Press. pp. 335–362
  6. .
  7. .
  8. ^ Tsogtbaatar, K., D. Weishampel, D. C. Evans, and M. Watabe. (In review). A New Hadrosauroid (Dinosauria: Ornithopoda) from the Late Cretaceous Baynshire Formation of the Gobi Desert (Mongolia). PLOS ONE