文献类型：期刊文献

中文题名：贵州金沙寒武系牛蹄塘组的古盘虫类三叶虫

英文题名：A STUDY OF THE EODISCOID TRILOBITE FROM THE CAMBRIAN NIUTITANG FORMATION OF JINSHA,GUIZHOU

作者：吴维义 郑昊林 杨兴莲

第一作者：吴维义

机构：[1]贵州理工学院资源与环境工程学院,贵阳550003;[2]贵州大学资源与环境工程学院,贵阳550025;[3]现代古生物学和地层学国家重点实验室,中国科学院南京地质古生物研究所,南京210008

第一机构：贵州理工学院资源与环境工程学院

年份：2018

卷号：57

期号：3

起止页码：304-311

中文期刊名：古生物学报

外文期刊名：Acta Palaeontologica Sinica

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金(41362002,41772021);现代古生物学和地层学国家重点实验室(中国科学院南京地质古生物研究所)(153113);贵州省科技计划项目(黔科合平台人才[20l7]5788号);“地质资源与地质工程”省级重点学科(ZDXK[2018]001)联合资助.

语种：中文

中文关键词：Tsunyidiscus;古盘虫类三叶虫;牛蹄塘组寒武系;贵州金沙

外文关键词：Tsunyidiscus;eodiscoid trilobite;Niutitang Formation;Cambrian;Jinsha of Guizhou

摘要：贵州金沙寒武系牛蹄塘组产出大量古盘虫类三叶虫化石,包括分离头盖、尾部和完整背甲。依据标本中具分类鉴定意义的构造特征的测量数据比值并线性拟合,结合形态学特征、个体发育趋势等特点分析,认为Tsunyidiscus armatus和Tsunyidiscus niutitangensis两个三叶虫种是有效的,支持以尾部肋区分节差异作为两个种种征判别标志。本项研究可为厘定贵州金沙地区三叶虫Tsunyidiscus序列提供可靠证据。
The Cambrian Niutitang Formation of Jinsha, Guizhou yields many specimens of cranidium and pygidium and articulated exoskeletons of the eodiscoid trilobite. The focus of this study is mainly on the systematic measure and linear fitting of the characteristics of evaluation of Tsunyidiscus from the Cambrian Niutitang Formation of Jinsha, Guizhou Combined with the study of morphology, ontogenic trends and characteristics, Tsunyidiscus armatus and T. niutitangensis are supposed to be two valid trilobites species, and further support to the morphology of the pygidium （with pleural furrows or not） is the main feature to distinguish these two species. This study not only sheds light on the taxonomy of Tsunyidicus, but also provides significant evidences for properly identifying the trilobite biozones of Jinsha area which can be better correlated with other regional stratigraphy.