| 词条 | Qiaowanlong |
| 释义 |
| name = Qiaowanlong | fossil_range = Early Cretaceous, {{fossilrange|100}} | image = Skeleton of Qiaowanlong kangxii.JPG | image_width = 250px | image_caption = Restored skeleton | regnum = Animalia | phylum = Chordata | classis = Reptilia | ordo = Saurischia | subordo = Sauropodomorpha | infraordo = Sauropoda | unranked_familia = Macronaria | genus = Qiaowanlong | genus_authority = You & Li, 2009 | subdivision_ranks = Species | subdivision =
}} 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 {{convert|12|m|ft}} and would have weighed around 6 tonnes.[4] The type species is Q. kangxii. References1. ^{{cite journal | last1 = You | first1 = Hai-Lu | last2 = Li | first2 = Da-Qing | date = 22 November 2009 | title = The first well-preserved Early Cretaceous brachiosaurid dinosaur in Asia | journal = Biological Sciences | volume = 276 | issue = 1695 | pages = 4077–4082 | doi = 10.1098/rspb.2009.1278 | pmid = 19734188 | pmc = 2825791 }} 2. ^{{cite news|url=http://news.bbc.co.uk/2/hi/science/nature/8233797.stm |title=US dinosaur had Chinese cousin |first=Judith | last=Burns |work=BBC News |accessdate=2009-09-02 | date=2009-09-02}} 3. ^{{cite journal | last1 = Ksepka | first1 = Daniel T. | last2 = Norel | first2 = Mark A. | date = 22 October 2010 | title = The Illusory Evidence for Asian Brachiosauridae: New Material of Erketu ellisoni and a Phylogenetic Reappraisal of Basal Titanosauriformes | journal = American Museum Novitates | volume = 3700 | pages = 1–27 | url = http://digitallibrary.amnh.org/dspace/bitstream/handle/2246/6087/N3700.pdf?sequence=1 | doi=10.1206/3700.2}} 4. ^Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 204 External links
4 : Macronarians|Early Cretaceous dinosaurs of Asia|Fossil taxa described in 2009|Paleontology in Gansu |
| 随便看 |
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。