New Data of Phosphatized Acritarchs from the Ediacaran Doushantuo Formation at Weng'an,Guizhou Province,Southwest China

作     者：LIU Pengju YIN Chongyu 

作者机构：Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2005年第79卷第5期

页      面：575-581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：funded by the National Natural Science Foundation of China(Grant No.440272015) the China Geological Survey(Grant No.200213000042) 

主　　题：Weng'an area Guizhou Ediacaran Doushantuo Formation Acritarchs 

摘      要：Abundant phosphatized acritarchs are preserved in the late Precambrian （Ediacaran） Doushantuo Formation at Weng＇an, Guizhou Province, southwest China. Most of them are large with various spinous ornaments and multilayered outer walls. The general characters of these fossils are quite similar to those found from the homochronous deposits of the Yangtze Gorges, southern China. Therefore the Doushantuo Formation in the Weng＇an area can be correlated directly with the Doushantuo Formation of the Yangtze Gorges. Four species in four genera, including two new genera, two new species and one uncertain species are systematically described for the first time from the studied locality. The taxa are Bacatisphaera baokangensis Zhou, Brasier et Xue, 2001, Taeniosphaera doushantuoensis gen. et sp. nov., Rugospinasphaera speciosa gen. et sp. nov. and Meghystichosphaeridium sp. The new data enriches the famous Weng＇an biota, especially the marine microplankton flora in the Ediacaran Doushantuo Formation.