The biostratigraphic succession of acanthomorphic acritarchs of the Ediacaran Doushantuo Formation in the Yangtze Gorges area, South China and its biostratigraphic correlation with Australia

2013 ◽  
Vol 225 ◽  
pp. 29-43 ◽  
Author(s):  
Pengju Liu ◽  
Chongyu Yin ◽  
Shouming Chen ◽  
Feng Tang ◽  
Linzhi Gao
Keyword(s):  
South China ◽  
Doushantuo Formation ◽  
Biostratigraphic Correlation

Phosphatized acanthomorphic acritarchs and related microfossils from the Ediacaran Doushantuo Formation at Weng'an (South China) and their implications for biostratigraphic correlation

2014 ◽  
Vol 88 (1) ◽  
pp. 1-67 ◽  
Author(s):  
Shuhai Xiao ◽  
Chuanming Zhou ◽  
Pengju Liu ◽  
Dan Wang ◽  
Xunlai Yuan
Keyword(s):  
South China ◽  
Distinct Species ◽  
Guizhou Province ◽  
Doushantuo Formation ◽  
Systematic Treatment ◽  
East European ◽  
Thin Sectioning ◽  
Biostratigraphic Correlation ◽  
Biostratigraphic Subdivision ◽  
Microfossil Assemblage

The Doushantuo Formation at Weng'an in Guizhou Province, South China, is best known for animal embryo-like microfossils preserved in phosphorites. However, this unit also contains a diverse assemblage of three-dimensionally phosphatized acanthomorphic acritarchs, which are useful in the biostratigraphic subdivision and correlation of the lower–middle Ediacaran System. These acritarchs can be studied using both thin sectioning and acid maceration techniques, thus have the potential to resolve taxonomic inconsistencies between acritarchs preserved in cherts and shales. This paper presents a systematic treatment of acanthomorphs (and related spheroidal microfossils) from the Doushantuo Formation at Weng'an. More than 40 distinct species are described, including the following new species:Asterocapsoides robustusn. sp.,Knollisphaeridium?bifurcatumn. sp.,Megasphaera cymbalan. sp.,Megasphaera patellan. sp.,Megasphaera puncticulosan. sp.,Mengeosphaera eccentrican. gen. n. sp.,Papillomembrana boletiformisn. sp.,Sinosphaera variabilisn. sp.,Tanarium victorn. sp.,Tianzhushania raran. sp.,Variomargosphaeridium gracilen. sp., andWeissiella brevisn. sp. The Weng'an microfossil assemblage is dominated byMegasphaeraandMengeosphaerabut shares some taxa that are characteristic of theTianzhushania spinosabiozone and theTanarium conoideum–Hocosphaeridium scaberfacium–Hocosphaeridium anozosbiozone recognized in the Yangtze Gorges area. It may represent a transitional assemblage between these two biozones. The Weng'an microfossil assemblage also shares some elements with Ediacaran acanthomorph assemblages from Australia, Siberia, and East European Platform, indicating at least partial biostratigraphic overlap with those assemblages. Among the taxa described here,T. spinosaandH. anozosemerges as easily recognizable and widely distributed acanthomorph species whose first appearance may be used to define acanthomorph biozones for regional and global biostratigraphic correlation of lower–middle Ediacaran successions.

Organic Carbon Isotope Geochemistry of the Neoproterozoic Doushantuo Formation, South China

2010 ◽  
Vol 80 (5) ◽  
pp. 670-683 ◽  
Author(s):  
GUO Qingjun ◽  
LIU Congqiang ◽  
Harald STRAUSS ◽  
Tatiana GOLDBERG ◽  
ZHU Maoyan ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Isotope ◽  
South China ◽  
Isotope Geochemistry ◽  
Doushantuo Formation ◽  
Organic Carbon Isotope

Dikelocephalid trilobites from theEosaukiafauna (Upper Furongian) of the Taebaek Group, Korea

2011 ◽  
Vol 85 (2) ◽  
pp. 279-297 ◽  
Author(s):  
Seung-Bae Lee ◽  
Duck K. Choi
Keyword(s):  
South China ◽  
North China ◽  
Generic Concept ◽  
Upper Cambrian ◽  
Taebaeksan Basin ◽  
Biostratigraphic Correlation ◽  
Lowermost Part ◽  
Taebaek Group

TheEosaukiafauna is proposed for the upper Furongian trilobite assemblage from the interval spanning from the upper part of the Hwajeol Formation to the lowermost part of the Dongjeom Formation in the Taebaek Group, Taebaeksan Basin, Korea. It is characterized by the dominance of dikelocephalid trilobites comprisingEosaukia micropora, E. bella, E. acuta, Mictosaukiacf.M. globosa, andTaebaeksaukia spinatan. gen. n. sp. Taxonomic reappraisal of the genusMictosaukiathat has been employed as an upper Cambrian index taxon in eastern Gondwana reveals that more than half of the species ofMictosaukiabelong inEosaukia.This study clarifies the generic concept ofEosaukia, which provides a more reliable biostratigraphic correlation for the upper Furongian strata in eastern Gondwanan regions. TheEosaukiafauna is correlated with the“Mictosaukia”faunas from the upper Fengshanian of North China, upper Taoyuanian of South China, and upper Payntonian of Australia.

scholarly journals Sedimentary lithofacies characteristics and sweet-spot interval characterization of the Sinian Doushantuo Formation in Upper Yangtze Platform, South China

China Geology ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 259-273
Author(s):  
Yu-fang Wang ◽  
◽  
Gang-yi Zhai ◽  
Yong-chao Lu ◽  
Yi-quan Ma ◽  
...  
Keyword(s):  
South China ◽  
Sweet Spot ◽  
Yangtze Platform ◽  
Doushantuo Formation

Ediacaran Acanthomorphic Acritarchs and Other Microfossils from Chert Nodules of the Upper Doushantuo Formation in the Yangtze Gorges Area, South China

2014 ◽  
Vol 88 (S72) ◽  
pp. 1-139 ◽  
Author(s):  
Pengju Liu ◽  
Shuhai Xiao ◽  
Chongyu Yin ◽  
Shouming Chen ◽  
Chuanming Zhou ◽  
...  
Keyword(s):  
South China ◽  
Doushantuo Formation ◽  
Systematic Treatment ◽  
East European ◽  
Northern India ◽  
Systematic Paleontology ◽  
First Occurrence ◽  
Biostratigraphic Subdivision ◽  
Multicellular Organisms ◽  
Algal Thalli

Silicified microfossils preserved in chert nodules of the Doushantuo Formation in the Yangtze Gorges area of South China have great potential to improve the biostratigraphic subdivision and correlation of the Ediacaran System. This potential can be realized only if solid taxonomy is available. However, a systematic treatment of these microfossils (particularly acanthomorphic acritarchs) is lacking, greatly limiting their biostratigraphic potential. This paper presents the systematic paleontology of silicified microfossils from upper Doushantuo Formation (Member III) chert nodules at three sections in the Yangtze Gorges area. More than 90 species of microfossils are described, including 66 named taxa of acanthomorphs, seven named taxa of sphaeromorphs, 12 taxa of cyanobacterial filaments and coccoids, four taxa of algal thalli, and two species of tubular microfossils. Several acritarch species, includingAppendisphaera clavan. sp.,Mengeosphaera grandispinan. sp.,M. stegosauriformisn. sp.,Leiosphaeridia, and possiblySinosphaera rupina, are shown to be multicellular organisms, consistent with the proposition that some Ediacaran acritarchs may be diapause eggs of early animals. This study supports the view that theTianzhushania spinosaacanthomorph biozone is unique to the lower Doushantuo Formation in South China (and perhaps its equivalent in northern India) and that Ediacaran acanthomorph assemblages from Australia, Siberia, and East European Platform are younger than theTianzhushania spinosabiozone. It is proposed that the first occurrence ofHocosphaeridium anozos, a species with easily recognizable morphology and wide taphonomic and geographic distributions, be used to define the second Doushantuo acanthomorph biozone succeeding theTianzhushania spinosabiozone. New taxa described in this paper include three new genera (Bispinosphaeran. gen.;Yushengian. gen.; andGranitunican. gen.) and 40 new species:Appendisphaera?brevispinan. sp.,A. clavan. sp.,A.?hemisphaerican. sp.,A. longispinan. sp.,A. setosan. sp.,Bispinosphaera peregrinan. gen. n. sp.,Crinita paucispinosan. sp.,Ericiasphaera densispinan. sp.,Hocosphaeridium dilatatumn. sp.,Knollisphaeridium denticulatumn. sp.,K. longilatumn. sp.,K. obtusumn. sp.,K. parvumn. sp.,Mengeosphaera angustan. sp.,M. bellulan. sp.,M.cf.bellulan. sp.,M. constrictan. sp.,M.?cuspidatan. sp.,M.?gracilisn. sp.,M. grandispinan. sp.,M. latibasisn. sp.,M. miniman. sp.,M. spicatan. sp.,M. spinulan. sp.,M. stegosauriformisn. sp.,M. triangularisn. sp.,M. uniformisn. sp.,Sinosphaera asteriformisn. sp.,Tanarium acusn. sp.,T. elegansn. sp.,T. longitubularen. sp.,T.?minimumn. sp.,T. obesumn. sp.,T. variumn. sp.,Urasphaera fungiformisn. sp.,U. nuptan. sp.,Yushengia ramispinan. gen. n. sp.,Granitunica mcfaddeniaen. gen. n. sp.,Osculosphaera arcelliformisn. sp., andO. membraniferan. sp.

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