View source for Jiutaisaurus

{{Short description|Extinct genus of dinosaurs}}
{{Italic title}}
{{Automatic taxobox
| name = ''Jiutaisaurus''
| image = 
| fossil_range = [[Early Cretaceous|Early]]-[[Late Cretaceous]], {{Fossil range|125|93.9}}
| taxon = Jiutaisaurus
| authority = Wu ''et al.'', 2006
| type_species = {{extinct}}'''''Jiutaisaurus xidiensis'''''
| type_species_authority = Wu ''et al.'', 2006
}}

'''''Jiutaisaurus''''' (meaning "[[Jiutai District|Jiutai]] lizard") is a [[genus]] of [[sauropod]] [[dinosaur]] from the [[Quantou Formation]] of [[Jilin]], [[China]]. ''Jiutaisaurus'' was a [[sauropod]] which lived during the [[Cretaceous]]. The [[type species]], '''''Jiutaisaurus xidiensis''''', was described by Wu ''et al.'' in 2006, and is based on eighteen [[vertebra]]e. It probably lived alongside ''[[Changchunsaurus]]'' and ''[[Helioceratops]]''.

==Discovery and naming==
In September 2003, a team from Jilin University conducted a fossil excavation in Xidi Village, [[Jiutai, Changchun|Jiutai]], and recovered 18 caudal [[vertebrae]] from a [[sauropod]], as well as some other fossils. In March 2006, Wu Wenhao, [[Dong Zhiming]], Sun Yuewu, Li Chuntian, and Li Tao described the vertebrae as a new genus and species, ''Jiutaisaurus xidiensis'' ({{lang-zh|s=西地九台龙|p=Xīdì Jiǔtáilóng}}), named for the discovery site.<ref name="wu2006"/>

===Fossil record===
''Jiutaisaurus xidiensis'' is known only from the [[holotype]] specimen, CAD-02, which was recovered from the Cretaceous-aged [[Quantou Formation]]. The specimen consists of 18 articulated caudal vertebrae, hypothesized to represent the 11th to 28th vertebrae of the caudal series, and 13 [[haemal arches]].<ref name="wu2006"/>

==Classification== 
In their original description, Wu and colleagues tentatively classified ''Jiutaisaurus'' as a [[titanosaur]], also noting similarities to [[Huabeisauridae]] and [[Brachiosauridae]].<ref name="wu2006"/> Subsequent authors have considered it to be an indeterminate [[titanosauriform]].<ref name="mannion2013"/> Wilson and Upchurch, in 2009, considered it a ''[[nomen dubium]]''.<ref name="wilson2009"/>

==References==
{{Portal|Dinosaurs}}
{{Reflist|refs=
<ref name="mannion2013">{{cite journal|doi=10.1111/zoj.12029|title=Osteology of the Late Jurassic Portuguese sauropod dinosaur ''Lusotitan atalaiensis'' (Macronaria) and the evolutionary history of basal titanosauriforms|journal=Zoological Journal of the Linnean Society|volume=168|pages=98–206|year=2013|last1=Mannion|first1=Philip D.|last2=Upchurch|first2=Paul|last3=Barnes|first3=Rosie N.|last4=Mateus|first4=Octávio|doi-access=free}}</ref> 
<ref name="wilson2009">{{Cite journal| doi = 10.1017/S1477201908002691| issn = 1477-2019 | eissn = 1478-0941| volume = 7| issue = 2| pages = 199–239| last1 = Wilson| first1 = Jeffrey A.| last2 = Upchurch| first2 = Paul| title = Redescription and reassessment of the phylogenetic affinities of Euhelopus zdanskyi (Dinosauria: Sauropoda) from the early cretaceous of China| journal = Journal of Systematic Palaeontology| date = 2009-05-26}}</ref>
<ref name="wu2006">{{Cite journal| volume = 25| issue = 1| pages = 6–8| last1 = Wu| first1 = Wen-hao| last2 = Dong| first2 = Zhi-ming| last3 = Sun| first3 = Yue-wu| last4 = Li| first4 = Chun-tian| last5 = Li| first5 = Tao| title = A new sauropod dinosaur from the Cretaceous of Jiutai, Jilin, China| journal = Global Geology| date = 2006}}</ref>
}}

{{Sauropodomorpha|M.}}
{{Taxonbar|from=Q2154435}}

[[Category:Macronaria]]
[[Category:Dinosaur genera]]
[[Category:Early Cretaceous dinosaurs]]
[[Category:Taxa named by Dong Zhiming]]
[[Category:Fossil taxa described in 2006]]
[[Category:Dinosaurs of China]]