云南早侏罗世—新具嵴冠兽脚类恐龙（英文）  

A new crested theropod dinosaur from the Early Jurassic of Yunnan Province, China

作　　者：王国付 尤海鲁[3,4] 潘世刚 王涛[5] 

机构地区：[1]云南省楚雄州古生物化石研究中心,云南楚雄675000 [2]楚雄州博物馆,云南楚雄675000 [3]中国科学院脊椎动物演化与人类起源重点实验室,中国科学院古脊椎动物与古人类研究所,北京100044 [4]中国科学院大学地球科学学院,北京100049 [5]禄丰县国土资源局,云南禄丰650031

出　　处：《古脊椎动物学报》2017年第2期177-186,共10页Vertebrata Palasiatica

基　　金：provided by the National Natural Science Foundation of China (41472020);the Chuxiong Prefectural Government~~

摘　　要：报道了具嵴冠的兽脚类恐龙一新属种,安龙堡双柏龙(Shuangbaisaurus anlongbaoensis gen.et sp.nov.)。双柏龙发现于云南省楚雄彝族自治州双柏县下侏罗统冯家河组中,保存了部分头骨带下颌。双柏龙沿两侧眼眶背缘向上有嵴冠发育,这在其他兽脚类中未曾报道过。与其他早侏罗世体型较大且具一对矢状嵴冠的兽脚类(双嵴龙属和中国龙属)相比,双柏龙还独具一些特征组合,如相对较高的前颌骨体、抬高的前颌骨腹缘、后腹向延伸的轭骨后突及较小的上颞孔。比较研究表明,尽管中国"双嵴龙"("Dilophosaurus"sinensis)可能应归入中国龙属(Sinosaurus),但未必属于模式种。双柏龙的发现将有助于研究基干兽脚类的演化,尤其是各类头骨骨饰在其中的作用。A new crested theropod, Shuangbaisaurus anlongbaoensis gen. et sp. nov., is reported. The new taxon is recovered from the Lower Jurassic Fengjiahe Formation of Shuangbai County, Chuxiong Yi Autonomous Prefecture, Yunnan Province, and is represented by a partial cranium. Shuangbaisaurus is unique in possessing parasagittal crests along the orbital dorsal rims. It is also distinguishable from the other two lager-bodied parasagittal crested Early Jurassic theropods （Dilophosaurus and Sinosaurus） by a unique combination of features, such as higher than long premaxillary body, elevated ventral edge of the premaxilla, and small upper temporal fenestra. Comparative morphological study indicates that ＂Dilophosaurus＂ sinensis could potentially be assigned to Sinosaurus, but probably not to the type species. The discovery of Shuangbaisaurus will help elucidate the evolution of basal theropods, especially the role of various bony cranial ornamentations had played in the differentiation of early theropods.

关 键 词：云南楚雄 早侏罗世 恐龙 兽脚类 嵴冠 

分 类 号：Q915.864[天文地球—古生物学与地层学]