A New Carcharodontosauria(Theropoda) from the Early Cretaceous of Guangxi,Southern China

作     者：MO Jinyou ZHOU Fusheng LI Guangning HUANG Zhen CAO Chenyun 

作者机构：Natural History Museum of Guangxi Guangxi Institute of Regional Geological Survey 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2014年第88卷第4期

页      面：1051-1059页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by China Bureau of Geological Survey,the Department of Land and Resources of Guangxi the National Natural Science Foundation of China(grant#40862001) 

主　　题：Theropoda, Carcharodontosauria, Lower Cretaceous Xinlong Formation, Guangxi 

摘      要：A new large-bodied theropod dinosaur, Datanglong guangxiensis gen. et sp. nov., was recovered from the Lower Cretaceous Xinlong Formation of the Datang Basin, Guangxi. It is unique in several features including： posteriormost dorsal vertebra with teardrop-shaped pneumatic foramen confined by enlarged pcdl, acpl and the centrum; posteriormost dorsal with well-developed, horizontal prpl; posteriormost dorsal with a parapophysis projecting more laterally than the diapophysis; brevis fossa shallow with short, ridge-like medial blade; and iliac pubic peduncle with posteroventrally expanded margin. Cladistic analysis supports the idea that this new taxon Datanglong guangxiensis is a primitive member of the Carcharodontosauria in possessing two unambiguous synapomorphies： large external pneumatic foramina and internal spaces present in the lateral surface of ilium, and a peg-and-socket ischiac articulation with the ilium. The presence of the new taxon from Guangxi further confirms that Carcharodontosauria were cosmopolitan large-bodied predators during the Early-mid Cretaceous.