anewspeciesofsiyingiafromthelowerdevonianxishancunformationofqujingyunnan

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	anewspeciesofsiyingiafromthelowerdevonianxishancunformationofqujingyunnan
	Si Chudong; Gai Zhikun; Zhao Wenjin
	2015
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	53 期号:2 页码:110
摘要	This paper describes a new species of the Polybranchiaspiformes (Agnatha: Galeaspida), Siyingia perlatuspinosa sp. nov., from the Early Devonian Xishancun Formation in Qujing, East Yunnan, southwestern China. The diagnosis of the genus Siyingia is emended based on data from the holotype of the new species. A phylogenetic analysis, using an expanded version of the data matrix of Zhu and Gai defined in 2006, suggests that Siyingia and Polybranchiaspis form the monophyletic sister group of a clade containing Laxaspis and Damaspis. This discovery increases the known Early Devonian diversity of polybranchiaspiforms, and helps to clarify the pattern of interrelationships within the Polybranchiaspiformes.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/11373
专题	中国科学院古脊椎动物与古人类研究所
作者单位	中国科学院古脊椎动物与古人类研究所
第一作者单位	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	Si Chudong,Gai Zhikun,Zhao Wenjin. anewspeciesofsiyingiafromthelowerdevonianxishancunformationofqujingyunnan[J]. 古脊椎动物学报,2015,53(2):110.
APA	Si Chudong,Gai Zhikun,&Zhao Wenjin.(2015).anewspeciesofsiyingiafromthelowerdevonianxishancunformationofqujingyunnan.古脊椎动物学报,53(2),110.
MLA	Si Chudong,et al."anewspeciesofsiyingiafromthelowerdevonianxishancunformationofqujingyunnan".古脊椎动物学报 53.2(2015):110.

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