Qiaowanlong

Qiaowanlong
Temporal range: Early Cretaceous, 100 Ma
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Qiaowanlong restored as a brachiosaurid
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 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 m (40 ft) and would have weighed around 10 tonnes. The type species is Q. kangxii.

References

  1. ^ You, H.-L. and Li, D.-Q. (2009). "The first well-preserved Early Cretaceous brachiosaurid dinosaur in Asia." Proceedings of the Royal Society B: Biological Sciences, 276: 4077-4082 doi: 10.1098/rspb.2009.1278.
  2. ^ Judith Burns (2009-09-02). "US dinosaur had Chinese cousin". BBC News. http://news.bbc.co.uk/2/hi/science/nature/8233797.stm. Retrieved 2009-09-02. 
  3. ^ Ksepka, D.T. and Norel, M.A. (2010). "The Illusory Evidence for Asian Brachiosauridae: New Material of Erketu ellisoni and a Phylogenetic Reappraisal of Basal Titanosauriformes." American Museum Novitates, 3700: 1–27.

External links