Phosphatized biotas from the Neoproterozoic Doushantuo Formation on the Yangtze Platform  

作　　者：ZHOU Chuanming YUAN Xunlai XIAO Shuhai 

机构地区：[1]Nanjing Institute of Geology and Paleontology,Chinese Academy of Sciences,Nanjing 210008,China [2]Department of Geology,TWane University,New Orleans,LA 70118,USA

出　　处：《Chinese Science Bulletin》2002年第22期1918-1924,共7页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 49902002 and 49972006);the Chinese Academy of Sciences(Grant No.KZCX2-116);the Major Basic Research Projects of Chinese Ministry of Science and Technology (Gran

摘　　要：The Doushantuo Formation in South China was deposited after the Nantuo glaciation but before the evolution of complex Ediacaran metazoans. It contains multiple taphonomic windows, in its cherts, carbonaceous shales, and phosphorites, onto the late Neoproterozoic biosphere. The phosphatic window is unusually clear; Doushantuo phosphorites at Weng’an (Guizhou Province) are known to exquisitely preserve a multitude of single-celled eukaryotes, muiticellular algae, and microscopic animals. Our recent survey reveals that, in addition to the now famous Weng’an locality, Doushantuo phosphorites at Baokang (Hubei), Chadian (Shaanxi), and Shangrao (Jiangxi) also contain diverse eukaryotes preserved at the cellular level. All these phosphorites were deposited in shallow-water environments, typically above fair weather wave base and close to ancient islands. Along with Doushantuo cherts and shales, these phosphorites give us a clearer and more complete picture of late Neoproterozoic biological evolution: thereThe Doushantuo Formation in South China was deposited after the Nantuo glaciation but before the evolution of complex Ediacaran metazoans. It contains multiple taphonomic windows, in its cherts, carbonaceous shales, and phosphorites, onto the late Neoproterozoic biosphere. The phosphatic window is unusually clear; Doushantuo phosphorites at Weng’an (Guizhou Province) are known to exquisitely preserve a multitude of single-celled eukaryotes, multicellular algae, and microscopic animals. Our recent survey reveals that, in addition to the now famous Weng’an locality, Doushantuo phosphorites at Baokang (Hubei), Chadian (Shaanxi), and Shangrao (Jiangxi) also contain diverse eukaryotes preserved at the cellular level. All these phosphorites were deposited in shallow-water environments, typically above fair weather wave base and close to ancient islands. Along with Doushantuo cherts and shales, these phosphorites give us a clearer and more complete picture of late Neoproterozoic biological evolution: there is a remarkable diversification of multicellular eukaryotes shortly after several Neoproterozoic glaciation events.

关 键 词：NEOPROTEROZOIC Doushantuo Formation PHOSPHORITE phosphatized BIOTA EUKARYOTIC FOSSILS Yangtze Platform. 

分 类 号：P535[天文地球—古生物学与地层学]