Eocrinoid echinoderms from the Lower Cambrian Guanshan Fauna in Wuding,Yunnan,China

作     者：HU ShiXue LUO HuiLin HOU ShuGuang Bernd-Dietrich ERDTMANN 

作者机构：Yunnan Institute of Geological Sciences Kunming 650011 China Technische Universitat Bedin D-13355 Berlin Germany 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2007年第52卷第5期

页      面：717-719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 the Major Basic Research Project of Ministry of Science and Technol-ogy of China (Grant No. 2002CCA03300) the State Key Laboratory of Palaeo-biology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) (Grant No. 053110) 

主　　题：棘皮类动物 下寒武统 关山动物群 化石 云南武定 

摘      要：This is a brief report of a new occurrence of eocrinoids from the Early Cambrian Wulongqing Formation in Yunnan, China. The eocrinoids from the Guanshan fauna are among the earliest known eocrinoids. Different from many other Early and Middle Cambrian eocrinoids, the Guanshan eocrinoids are char-acterized by the absence of sutural pores and epispires, the long and spiral brachioles, the extremely long stalk, and the ratio of the length of the stalk versus that of the calyx. The discovery of the eocri-noids from the Guanshan fauna not only provides new information to the investigation of the early evolution of this animal group, but also shed new light on the occurrence and migration of early eocrinoids.