吉兰泰龙属(学名:Chilantaisaurus)是兽脚亚目新猎龙科下的一属,化石发现于中国的苏红图组(Suhongtu Formation)[1],约1,17至1,04亿年前[2]。吉兰泰龙是种大型恐龙,身长约11~13米长,体重估计值介于2.5公吨[3]到4公吨之间[4]。近年另有研究估计约为6公吨重[5]。
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模式种是大水沟吉兰泰龙(C. tashuikouensis),于1964年由胡所描述[6]。他认为它是属于肉食龙下目,且与异特龙有接近亲缘关系。但后来的多次研究,根据前肢的大型指爪,推测它是属于棘龙超科,有可能是棘龙科的原始物种[7][8]。也有研究根据其与异特龙超科、棘龙超科、虚骨龙类的相似处,而认为吉兰泰龙是新坚尾龙类的未定位属[9]。在2009年,新研究发现吉兰泰龙与肉食龙类的假鲨齿龙有可能是同种动物,两者化石发现于不同地层,体型有极大差距[10]。同年的另一份研究,显示吉兰泰龙与假鲨齿龙并非同种动物,并将吉兰泰龙归类于新建立的新猎龙科,是异特龙的近亲[3]。
除了模式种以外,还有几个种亦被建立,但都是基于一些很缺乏的遗骸。西伯利亚吉兰泰龙(C. sibiricus)的化石是一节末端跖骨,发现于俄罗斯布里亚特共和国,地质年代相当于白垩纪早期的巴列姆阶到豪特里维阶。由于化石少,研究描述很不清楚,无法确定这些化石的演化、分类关系[8][11][12]。毛儿图吉兰泰龙(C. maortuensis)有可能是原始的虚骨龙类恐龙[8],已在2009年被建立为假鲨齿龙[10]。浙江吉兰泰龙(C. zheziangensis)的骨头则是来自镰刀龙超科,可能事实上是来自于南雄龙模式标本的同一个体。
(英文)Yang Jingtao, You Hailu, Xxie Li and Zhou Hongrui(2017)."A New Specimen of Crichtonpelta benxiensis (Dinosauria: Ankylosaurinae) from the Mid-Cretaceous of Liaoning Province, China" [1] (页面存档备份,存于互联网档案馆)
(英文)Zhi-Xin Guoa, Yuan-Peng Shib, Yong-Tai Yanga,, Shuan-Qi Jiangb, Lin-Bo Lib, Zhi-Gang Zhao(2018)."Inversion of the Erlian Basin (NE China) in the early Late Cretaceous:Implications for the collision of the Okhotomorsk Block with East Asia" [2] (页面存档备份,存于互联网档案馆)
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存档副本. [2012-06-30]. (原始内容存档于2012-06-30).