A microfossil assemblage from the Ediacaran Doushantuo Formation in the Shennongjia area (Hubei Province, South China): Filling critical paleoenvironmental and biostratigraphic gaps

doi:10.1016/j.precamres.2022.106691

	A microfossil assemblage from the Ediacaran Doushantuo Formation in the Shennongjia area (Hubei Province, South China): Filling critical paleoenvironmental and biostratigraphic gaps
	Ye, Qin 3,4; Li, Jiaqi 4; Tong, Jinnan 4; An, Zhihui 2; Hu, Jun 4; Xiao, Shuhai 1
刊名	PRECAMBRIAN RESEARCH
	2022-08-01
卷号	377 页码:85
关键词	Acanthomorphic acritarchs Multicellular algae Carbon isotopes Ediacaran biostratigraphy Shennongjia area South China
ISSN号	0301-9268
DOI	10.1016/j.precamres.2022.106691
通讯作者	Ye, Qin(yeqin@cug.edu.cn) ; Xiao, Shuhai(xiao@vt.edu)
英文摘要	Microfossils of the Ediacaran Doushantuo Formation in South China provide an important window onto the rapid diversification of marine eukaryotes after the terminal Cryogenian global glaciation. They also offer key data in the biostratigraphic subdivision and correlation of the lower-middle Ediacaran System. Previously published Doushantuo microfossils in South China were mostly from intra-shelf facies in the Yangtze Gorges area, shelf margin facies in the Weng'an area, and upper slope facies in the Zhangjiajie area, whereas paleontological data from shallow-water inner shelf facies have been rarely documented. In addition, previous data from South China leave a "barren zone" associated with the negative delta 13Ccarb excursion EN2 that impedes biostratigraphic correlation. To address these environmental and stratigraphic gaps, we conducted an integrated chemostratigraphic and biostratigraphic analysis of the Doushantuo Formation at the inner shelf Lianhuacun section in the eastern Shennongjia area of Hubei Provence, South China. The Lianhuacun fossils are preserved in chert nodules/bands of the lower Doushantuo Formation, precisely in a chemostratigraphic interval identified as EN2, indicating that the so-called "barren zone" is likely a taphonomic artifact. A total of 33 genera and 82 species are identified, including a new genus (Duospinosphaera gen. nov.) and seven new species (Duospinosphaera shennongjiaensis sp. nov., D. biformis sp. nov., Jixiania retorta sp. nov., Mengeosphaera mamma sp. nov., Sinosphaera exilis sp. nov., Tanarium columnatum sp. nov., and Weissiella concentrica sp. nov.). The Lianhuacun acanthomorphic acritarchs can be broadly assigned to the third microfossil assemblage zone (i.e., the Tanarium conoideum - Cavaspina basiconica Assemblage Zone) recognized on the basis of the Weng'an biota that is correlated with upper Member II of Doushantuo Formation in the Yangtze Gorges area, consistent with chemostratigraphic correlation between the Shennongjia and Yangtze Gorges areas. Thus, the so-called "barren zone" may be a poorly preserved part of the third microfossil assemblage zone. Alternatively, it may represent a new and yet unnamed microfossil assemblage zone between the third and the overlying Tanarium pycnacanthum - Ceratosphaeridium glaberosum Assemblage Zone. Regardless, the new data presented here fill important gaps in the geographical, paleoenvironmental, and stratigraphic distributions of Ediacaran acanthomorphic acritarchs in South China. As such, they facilitate integrative chemostratigraphic and biostratigraphic correlation of Ediacaran strata at regional and global scales.
资助项目	Fundamental Research Funds for National Natural Science Foundation of China[41902004] ; Fundamental Research Funds for National Natural Science Foundation of China[41802206] ; National Postdoctoral Program for Innovative Talents[BX20180278] ; China Postdoctoral Science Foundation[2018M642946] ; China Postdoctoral Science Foundation[2021M692980] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[213125] ; Hubei Key Laboratory of Paleontology and Geological Environment Evolution[PEL-202003] ; State Key Laboratory of Biogeology and Environmental Geology[GBL201709] ; National Science Foundation[EAR-2021207] ; Central Universities[CUGCJ1816] ; Central Universities[CUG 2106101]
WOS关键词	YANGTZE GORGES AREA ; ORGANIC-WALLED MICROFOSSILS ; EARLY VENDIAN MICROFOSSILS ; ACANTHOMORPHIC ACRITARCHS ; CHEMOSTRATIGRAPHIC DATA ; CAMBRIAN MICROFOSSILS ; TUBULAR MICROFOSSILS ; DRAKEN CONGLOMERATE ; FOSSIL PRESERVATION ; LESSER HIMALAYA
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000829343900001
资助机构	Fundamental Research Funds for National Natural Science Foundation of China ; National Postdoctoral Program for Innovative Talents ; China Postdoctoral Science Foundation ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; Hubei Key Laboratory of Paleontology and Geological Environment Evolution ; State Key Laboratory of Biogeology and Environmental Geology ; National Science Foundation ; Central Universities
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/41070]
专题	中国科学院南京地质古生物研究所
通讯作者	Ye, Qin; Xiao, Shuhai
作者单位	1.Dept Geosci, Virginia Tech, Blacksburg, VA 24061 USA 2.Wuhan Ctr China Geol Survey, Hubei Key Lab Paleontol & Geol Environm Evolut, Wuhan 430205, Peoples R China 3.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, CAS, Nanjing 210008, Peoples R China 4.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Ye, Qin,Li, Jiaqi,Tong, Jinnan,et al. A microfossil assemblage from the Ediacaran Doushantuo Formation in the Shennongjia area (Hubei Province, South China): Filling critical paleoenvironmental and biostratigraphic gaps[J]. PRECAMBRIAN RESEARCH,2022,377:85.
APA	Ye, Qin,Li, Jiaqi,Tong, Jinnan,An, Zhihui,Hu, Jun,&Xiao, Shuhai.(2022).A microfossil assemblage from the Ediacaran Doushantuo Formation in the Shennongjia area (Hubei Province, South China): Filling critical paleoenvironmental and biostratigraphic gaps.PRECAMBRIAN RESEARCH,377,85.
MLA	Ye, Qin,et al."A microfossil assemblage from the Ediacaran Doushantuo Formation in the Shennongjia area (Hubei Province, South China): Filling critical paleoenvironmental and biostratigraphic gaps".PRECAMBRIAN RESEARCH 377(2022):85.