Sinankylosaurus

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Sinankylosaurus
Temporal range: Late Cretaceous
~77.3–73.5 Ma
↓
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: †Ornithischia
Suborder: †Ankylosauria
Genus: †Sinankylosaurus
Wang et al., 2020
Species:
†S. zhuchengensis
Binomial name
†Sinankylosaurus zhuchengensis
Wang et al., 2020

Sinankylosaurus (meaning "Chinese fused lizard") is a genus of ankylosaurian dinosaur from the late Cretaceous Period of Shandong, China. The genus contains a single species, Sinankylosaurus zhuchengensis, known from a nearly complete right illium. The describers explained that the discovery of Sinankylosaurus further demonstrates the similarity between dinosaurs of eastern Asia and western North America.[1]

Discovery and naming[]

Beginning in 1964, paleontologists conducted large-scale excavations in Zhucheng and discovered an abundant source of fossils; notably dinosaur fossils.[2] ZJZ-183, the holotype specimen, was discovered in the Upper Cretaceous Wangshi Group (specifically the Xingezhuang Formation[3]) in Zhucheng, Shandong Province, China around 2010.[4] The fossil was prepared during the following years and was later described in 2020.[1]

Description[]

Sinankylosaurus, based on the contemporary relative Pinacosaurus, would have grown to around 5 metres (16 ft) long and would have weighed no heavier than 2 tonnes (4,400 lb).[1][5]

Paleoecology[]

Sinankylosaurus is known from the Xingezhuang Formation of southern China. It is known from a single ilium. Alongside it, in the formation, lived Sinoceratops, a ceratopsian,[6] Shantungosaurus, a very common hadrosaurid to which most of the material has been assigned,[6][7] Zhuchengtyrannus, an Asian tyrannosaurid related to Tarbosaurus,[6] Zhuchengceratops, an Asian leptoceratopsid,[8] and Huaxiaosaurus,[9] a possible older individual of Shantungosaurus.[10][9] Other possible remains have been assigned to Zhuchengosaurus,[8] a probable junior synonym of Shantungosaurus,[10] and material tentatively assigned to Tyrannosaurus.[7]

References[]

  1. ^ Jump up to: a b c Wang, K. B.; Zhang, Y. X.; Chen, J.; Chen, S. Q.; Wang, P. Y. (2020). "A new ankylosaurian from the Late Cretaceous strata of Zhucheng, Shandong Province". Geological Bulletin of China (in Chinese). 39 (7): 958–962.
  2. ^ Wangshi Group in the Paleobiology Database
  3. ^ Zhao Xijin, Wang Kebai, & Li Dunjing. (2011). "Huaxiaosaurus aigahtens." Geological Bulletin of China 30 (11):1671-1688
  4. ^ "Shandong discovers new dinosaur with spikes!". yqqlm. Retrieved 21 August 2020.
  5. ^ Gregory S. Paul (2010). The Princeton Field Guide to Dinosaurs. United States of America: Princeton University Press. ISBN 9780691137209.
  6. ^ Jump up to: a b c Xu, X., Wang, K., Zhao, X. & Li, D. (2010). "First ceratopsid dinosaur from China and its biogeographical implications". Chinese Science Bulletin. 55 (16): 1631–1635. doi:10.1007/s11434-009-3614-5.CS1 maint: multiple names: authors list (link)
  7. ^ Jump up to: a b Hu, C.C. (1973). "[A new hadrosaur from the Cretaceous of Chucheng, Shantung]". Acta Geologica Sinica. 2: 179–206.
  8. ^ Jump up to: a b Zhao, X.; Li, D.; Han, G.; Zhao, H.; Liu, F.; Li, L. & Fang, X. (2007). "Zuchengosaurus maximus from Shandong Province". Acta Geoscientia Sinica. 28 (2): 111–122. doi:10.1007/s10114-005-0808-x.
  9. ^ Jump up to: a b Zhao X.; Wang K. & Li D. (2011). "Huaxiaosaurus aigahtens". Geological Bulletin of China. 30 (11): 1671–1688.
  10. ^ Jump up to: a b Holtz, T.R. Jr. (2012). Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages. Indiana University Press. p. 47. ISBN 978-0-375-82419-7.


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