| A New Carcharodontosauria (Theropoda) from the Early Cretaceous of Guangxi, Southern China |
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| 作者姓名： | MO Jinyou ZHOU Fusheng LI Guangning HUANG Zhen and CAO Chenyun |
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| 作者单位： | 1 Natural History Museum of Guangxi, Nanning 530012, China; 2 Guangxi Institute of Regional Geological Survey, Guilin 541003, China |
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| 基金项目： | This work is supported by China Bureau of Geological Survey, the Department of Land and Resources of Guangxi, and the National Natural Science Foundation of China (grant #40862001). |
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| 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.
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| 关 键 词： | 早白垩世 广西 中国南方 新分类群 下白垩统 内部空间 支序分析 食肉动物 |
| 收稿时间： | 2013/11/10 0:00:00 |
| 修稿时间： | 2014/5/27 0:00:00 |
A New Carcharodontosauria （Theropoda） from the Early Cretaceous of Guangxi,Southern China |
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| Authors: | MO Jinyou ZHOU Fusheng LI Guangning HUANG Zhen CAO Chenyun |
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| Institution: | MO Jinyou, ZHOU Fusheng, LI Guangning, HUANG Zhen, CAO Chenyun(1. Natural History Museum of Guangxi Nanning 530012, China; 2. Guangxi Institute of Regional Geological Survey, Guilin 541003, China) |
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| Abstract: | 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. |
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| Keywords: | Theropoda Carcharodontosauria Lower Cretaceous Xinlong Formation Guangxi |
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