湖北保康白竹磷矿埃迪卡拉系陡山沱组微体化石新材料  

NEW MATERIALS OF MICROFOSSILS FROM THE EDIACARAN DOUSHANTUO FORMATION IN THE BAIZHU PHOSPHORITE DEPOSIT,BAOKANG,HUBEI PROVINCE

作　　者：阳乐 庞科[2] 陈雷 钟振华 杨锋杰 YANG Le;PANG Ke;CHEN Lei;ZHONG Zhenhua;YANG Fengjie(School of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590;State Key Laboratory of Palaeobiology and Stratigraphy,Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment,Chinese Academy of Sciences,Nanjing 210008;Pilot National Laboratory for Marine Science and Technology(Qingdao),Evaluation and Detection Technology Laboratory of Marine Mineral Resources,Qingdao 266590)

机构地区：[1]山东科技大学地球科学与工程学院,青岛266590 [2]现代古生物学和地层学国家重点实验室,中国科学院生物演化与环境卓越创新中心,中国科学院南京地质古生物研究所,南京210008 [3]青岛海洋科学与技术试点国家实验室,海洋矿产资源评价与探测技术功能实验室,青岛266590

出　　处：《微体古生物学报》2020年第1期1-20,共20页Acta Micropalaeontologica Sinica

基　　金：国家重点研发计划(2016YFC0601001,2017YFC0603100);国家自然基金委(41502019,41921002);中国科学院(XDB26000000,QYZDJSSW-DQC009);山东科技大学科研发展基金(2015RCJJ009,2015YQJH102,2015TDJH101);泰山学者工程专项经费共同资助。

摘　　要：埃迪卡拉纪(震旦纪)是早期多细胞生物起源与辐射的重要地质时期,磷酸盐化保存的微体化石则是研究该时期生命演化的重要窗口。目前对我国扬子地台埃迪卡拉系陡山沱组磷酸盐化微体化石的研究主要集中于贵州瓮安等地,其他地区的研究偏少。本次研究报道了保存于湖北保康白竹磷矿埃迪卡拉系陡山沱组磷块岩的微体化石。这些微体化石以三维磷酸盐化形式保存,种类丰富,共计14属21种,包括大型带刺疑源类Asterocapsoides sp.,Dicrospinasphaerasp.,Knollisphaeridiumsp.,Mengeosphaera chadianensis,Tanarium conoideum,T.digitiforme,T.pilosiusculum,Tianzhushania sp.;球状化石Megasphaera inornata;球状蓝藻Archaeophycus yunnanensis,丝状蓝藻Cyanonema majus,Obruchevella minor,Salome sp.,Siphonophycus septatum,S.robustum,S.typicum,S.kestron;以及多细胞藻类Gremiphyca corymbiata,Thallophyca ramosa,Wengania exquisita,W.globosa。这些微体化石的发现,进一步丰富了白竹磷矿陡山沱组的化石组合,为华南扬子地台陡山沱组的生物地层对比提供了新的材料。Ediacaran(Sinian)is a critical geological period for the origin and radiation of early multicellular life.Phosphatized microfossils provide an important window onto the understanding of evolution of early multicellular life in Ediacaran.At present,researchs on phosphatized microfossils of Ediacaran Doushantuo Formation in Yantze Block,South China mainly focus on Weng’an,Guizhou province;while other regions are much less focused.In this study,we report a large number microfossils from phosphorites of Ediacaran Doushantuo Formation at Baizhu phosphorite deposite,Baokang,Hubei Province.This diverse assemblage of three-dimensionally phosphatized microfossils consists of 21species belonging to 14genera,including large acanthomorphic acritarchs Asterocapsoides sp.,Dicrospinasphaerasp.,Knollisphaeridiumsp.,Mengeosphaera chadianensis,Tanarium conoideum,T.digitiforme,T.pilosiusculumand Tianzhushania sp.;spherical microfossil Megasphaera inornata;coccoidal cyanobacterium Archaeophycus yunnanensis and filamentous cyanobacteria Cyanonema majus,Obruchevella minor,Salomesp.,Siphonophycus septatum,S.robustum,S.typicum and S.kestron;and multicellular algae Gremiphyca corymbiata,Thallophyca ramosa,Wengania exquisita and W.globosa.This discovery enriched the fossil assemblage of the Doushantuo Formation of the Baizhu phosphorite deposite and provided new materials for the biostratigraphic correlation of the Doushantuo Formation in the Yangtze region of south China.

关 键 词：埃迪卡拉纪 陡山沱组 微体化石 白竹磷矿 

分 类 号：Q911.2[天文地球—古生物学与地层学]