Taxonomic reassessment and phylogenetic test of Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964

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	Taxonomic reassessment and phylogenetic test of Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964
其他题名	南岭亚洲鳄和存义始猛鳄的分类重估和系统发育关系检验
	Wu Xiaochun1 ; Li Chun2 ; Wang Yanyin 2
	2018
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	56 期号:2 页码:137
摘要	The present paper revalidated Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964 in taxonomy based on a detailed comparative study on those relevant specimens. New information derived from this study revealed that A. nanlingensis and E. chunyii were truly distinguishable from each other and therefore, diagnosis was further revised for each of them. A. nanlingensis is large, with a moderately long or a very elongate snout, and characterised mainly by the combination of the following characters such as: the quadrate with a lateral condyle much larger than the medial one, the surangular pinched off before reaching the end of the retroarticular process, the dental margins (at least the posterior portion) of the jaws nearly straight, and the presence of a fossa/sulcus on the lateral surface of the surangular lateral to the mandibular fossa. E. chunyii is a median-sized, short-snouted animal and characterised mainly by the combination of the following characters such as: the condyles of the quadrate similar in size, the dental margins of the jaws strongly concavo-convex, the dentary symphyses very short, the splenial not entering the mandibular symphysis, and the presence of a fossa/sulcus on the lateral surface of the surangular lateral to the mandibular fossa. With new information derived from this study, the phylogenetic relationships of A. nanlingensis and E. chunyii were tested, which did not support the view that the two species formed a monophyletic clade and opposed that E. chunyii could be considered as the synonym of A. nanlingensis.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/10813
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.Canadian Museum of Nature 2.中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Wu Xiaochun,Li Chun,Wang Yanyin. Taxonomic reassessment and phylogenetic test of Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964[J]. 古脊椎动物学报,2018,56(2):137.
APA	Wu Xiaochun,Li Chun,&Wang Yanyin.(2018).Taxonomic reassessment and phylogenetic test of Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964.古脊椎动物学报,56(2),137.
MLA	Wu Xiaochun,et al."Taxonomic reassessment and phylogenetic test of Asiatosuchus nanlingensis Young, 1964 and Eoalligator chunyii Young, 1964".古脊椎动物学报 56.2(2018):137.

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