Qiaowanlong Explained

Qiaowanlong (meaning "Qiaowan dragon") 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 Xiagou Formation in the Xinminpu Group, dating to the Early Cretaceous (late Aptian stage[3]). The only known specimen consists of articulated cervical (neck) vertebrae and a right pelvic girdle, as well as several unidentified bone fragments.[4] [5] 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.[6] It is estimated to have had a length of around 12m (39feet) and would have weighed around 6 tonnes.[7] The type species is Q. kangxii.

Notes and References

  1. You . Hai-Lu . Li . Da-Qing . 22 November 2009 . The first well-preserved Early Cretaceous brachiosaurid dinosaur in Asia . . 276 . 1695 . 4077–4082 . 10.1098/rspb.2009.1278 . 19734188 . 2825791 .
  2. News: US dinosaur had Chinese cousin . Judith . Burns . BBC News . 2009-09-02 . 2009-09-02.
  3. Xi. Dangpeng. Wan. Xiaoqiao. Li. Guobiao. Li. Gang. 2018-09-19. Cretaceous integrative stratigraphy and timescale of China. Science China Earth Sciences. 62. 1. 256–286. 10.1007/s11430-017-9262-y. 135150710 . 1674-7313.
  4. Web site: Bifid Brachiosaurs, Batman! . Sauropod Vertebra Picture of the Week . 6 September 2009 . Mike . Taylor . Mike P. Taylor .
  5. Web site: More on Qiaowanlong already . Sauropod Vertebra Picture of the Week . 6 September 2009 . Mike . Taylor . Mike P. Taylor .
  6. 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 . . 3700 . 1–27 . 10.1206/3700.2. 86254470 .
  7. Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 204

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