Qiaowanlong

Qiaowanlong
Temporal range: Early Cretaceous, 100 Ma
↓
Restored skeleton
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Saurischia
Suborder: Sauropodomorpha
Infraorder: Sauropoda
(unranked): Macronaria
Genus: Qiaowanlong
You & Li, 2009
Species
  • Q. kangxii You & Li, 2009 (type)
Qiaowanlong restored as a brachiosaurid

Qiaowanlong is a genus of sauropod dinosaur. Fossils belonging to the genus were found in 2007 from the Yujinzi Basin of Gansu, China, and were described in 2009 in the Proceedings of the Royal Society B.[1][2] The remains come from a geological formation called the Xinminpu Group, dating to the Early Cretaceous (Albian stage) about 100 Ma. The only known specimen consists of articulated cervical (neck) vertebrae and a right pelvic girdle, as well as several unidentified bone fragments. Qiaowanlong was initially reported as the first brachiosaurid to have been found from China. However, later analysis found that it was more closely related to titanosauriformes like Euhelopus and Erketu.[3] It is estimated to have had a length of around 12 metres (39 ft) and would have weighed around 6 tonnes.[4] The type species is Q. kangxii.

References

  1. ↑ You, Hai-Lu; Li, Da-Qing (22 November 2009). "The first well-preserved Early Cretaceous brachiosaurid dinosaur in Asia". Proceedings of the Royal Society B: Biological Sciences. 276 (1695): 4077–4082. doi:10.1098/rspb.2009.1278. PMC 2825791Freely accessible. PMID 19734188.
  2. ↑ Burns, Judith (2009-09-02). "US dinosaur had Chinese cousin". BBC News. Retrieved 2009-09-02.
  3. ↑ Ksepka, Daniel T.; Norel, Mark A. (22 October 2010). "The Illusory Evidence for Asian Brachiosauridae: New Material of Erketu ellisoni and a Phylogenetic Reappraisal of Basal Titanosauriformes" (PDF). American Museum Novitates. 3700: 1–27. doi:10.1206/3700.2.
  4. ↑ Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 204
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