摘要
Previously undescribed Ediacaran macrofossils are documented in and close to a quarry southwest of Zigui in Shunyang Valley,near Sixi Village,Yangtze Three Gorges region,Hubei Province,China.Discoidal impressions,vendotaenids,and a new branching form occur in bedded carbonates through the entire 235 m thickness of the Dengying Formation.The quarry and nearby outcrops in the stream valley have significant potential for further discoveries of Ediacaran macrofossils.
Previously undescribed Ediacaran macrofossils are documented in and close to a quarry southwest of Zigui in Shunyang Valley,near Sixi Village,Yangtze Three Gorges region,Hubei Province,China.Discoidal impressions,vendotaenids,and a new branching form occur in bedded carbonates through the entire 235 m thickness of the Dengying Formation.The quarry and nearby outcrops in the stream valley have significant potential for further discoveries of Ediacaran macrofossils.
引文
An,Z.H.,Jiang,G.Q.,Tong,J.N.,et al.,2015.Stratigraphic Position of the Ediacaran Miaohe Biota and Its Constrains on the Age of the Upper Doushantuoδ13C Anomaly in the Yangtze Gorges Area,South China.Precambrian Research,271:243-253.doi:10.13039/501100004613
Anderson,E.P.,Schiffbauer,J.D.,Xiao,S.,2011.Taphonomic Study of Ediacaran Organic-Walled Fossils Confirms the Importance of Clay Minerals and Pyrite in Burgess Shale-Type Preservation.Geology,39(7):643-646.doi:10.1130/g31969.1
Chen,J.,Bottjer,D.J.,Oliveri,P.,et al.,2004.Small Bilaterian Fossils from 40 to 55 Million Years before the Cambrian.Science,305(5681):218-222.doi:10.1126/science.1099213
Chen,Z.,Zhou,C.M.,Meyer,M.,et al.,2013.Trace Fossil Evidence for Ediacaran Bilaterian Animals with Complex Behaviors.Precambrian Research,224:690-701.doi:10.1016/j.precamres.2012.11.004
Chen,Z.,Zhou,C.-M.,Xiao,S.H.,et al.,2014.New Ediacara Fossils Preserved in Marine Limestone and Their Ecological Implications.Scientific Reports,4(1):4180.doi:10.1038/srep04180
Condon,D.,Zhu,M.,Bowring,S.,et al.,2005.U-Pb Ages from the Neoproterozoic Doushantuo Formation,China.Science,308(5718):95-98.doi:10.1126/science.1107765
Cui,H.,Kaufman,A.J.,Xiao,S.H.,et al.,2015.Redox Architecture of an Ediacaran Ocean Margin:Integrated Chemostratigraphic(δ13C-δ34S-87Sr/86Sr-Ce/Ce*)Correlation of the Doushantuo Formation,South China.Chemical Geology,405:48-62.doi:10.13039/100002861
Cunningham,J.A.,Vargas,K.,Liu,P.J.,et al.,2015.Critical Appraisal of Tubular Putative Eumetazoans from the Ediacaran Weng’an Doushantuo Biota.Proceedings of the Royal Society B:Biological Sciences,282(1812):20151169.doi:10.1098/rspb.2015.1169
Ding,Q.X.,Chen,Y.Y.,1981.Discovery of Soft Metazoan from the Sinian System along Eastern Yangtze Gorge,Hubei.Earth SciencesJournal of Wuhan College of Geology,15:53-57(in Chinese)
Duda,J.P.,Blumenberg,M.,Thiel,V.,et al.,2014.Geobiology of a Palaeoecosystem with Ediacara-Type Fossils:The Shibantan Member(Dengying Formation,South China).Precambrian Research,255:48-62.doi:10.13039/501100001659
Ford,T.D.,1958.Pre-Cambrian Fossils from Charnwood Forest.Proceedings of the Yorkshire Geological Society,31(3):211-217.doi:10.1144/pygs.31.3.211
Ford,T.D.,2011.Discovery of the Precambrian Fossils in Charnwood Forest.Mercian Geologist,17:226-227
Hu,J.,Wang,J.S.,Chen,H.R.,et al.,2012.Multiple Cycles of Glacier Advance and Retreat during the Nantuo(Marinoan)Glacial Termination in the Three Gorges Area.Frontiers of Earth Science,6(1):101-108.doi:10.1007/s11707-011-0179-9
Jiang,G.Q.,Shi,X.Y.,Zhang,S.H.,et al.,2011.Stratigraphy and Paleogeography of the Ediacaran Doushantuo Formation(ca.635-551 Ma)in South China.Gondwana Research,19(4):831-849.doi:10.1016/j.gr.2011.01.006
Kouketsu,Y.,Mizukami,T.,Mori,H.,et al.,2014.A New Approach to Develop the Raman Carbonaceous Material Geothermometer for LowGrade Metamorphism Using Peak Width.Island Arc,23(1):33-50.doi:10.1111/iar.12057
Lan,Z.W.,Chen,Z.Q.,2013.Proliferation of MISS-Forming Microbial Mats after the Late Neoproterozoic Glaciations:Evidence from the Kimberley Region,NW Australia.Precambrian Research,224:529-550.doi:10.1016/j.precamres.2012.11.008
Liu,A.G.,Matthews,J.J.,Menon,L.R.,et al.,2014.Haootia Quadriformis N.Gen.,N.Sp.,Interpreted as a Muscular Cnidarian Impression from the Late Ediacaran Period(Approx.560 Ma).Proceedings of the Royal Society B:Biological Sciences,281(1793):20141202.doi:10.1098/rspb.2014.1202
Liu,P.J.,Chen,S.M.,Zhu,M.Y.,et al.,2014.High-Resolution Biostratigraphic and Chemostratigraphic Data from the Chenjiayuanzi Section of the Doushantuo Formation in the Yangtze Gorges Area,South China:Implication for Subdivision and Global Correlation of the Ediacaran System.Precambrian Research,249:199-214.doi:10.1016/j.precamres.2014.05.014
Meyer,M.,Xiao,S.H.,Gill,B.C.,et al.,2014.Interactions between Ediacaran Animals and Microbial Mats:Insights from Lamonte Trevallis,a New Trace Fossil from the Dengying Formation of South China.Palaeogeography,Palaeoclimatology,Palaeoecology,396:62-74.doi:10.1016/j.palaeo.2013.12.026
She,Z.-B.,Strother,P.,Papineau,D.,2014.Terminal Proterozoic Cyanobacterial Blooms and Phosphogenesis Documented by the Doushantuo Granular Phosphorites II:Microbial Diversity and C Isotopes.Precambrian Research,251:62-79.doi:10.1016/j.precamres.2014.06.004
Sun,W.G.,1986.Late Precambrian Pennatulids(Sea Pens)from the Eastern Yangtze Gorge,China:Paracharnia gen.nov.Precambrian Research,31(4):361-375.doi:10.1016/0301-9268(86)90040-9
Tang,F.,Yin,C.Y.,Liu,P.J.,et al.,2008.A New Diverse Macrofossil Lagerst?tte from the Uppermost Ediacaran of Southwestern China.Acta Geologica Sinica(English Edition),82(6):1095-1103.doi:10.1111/j.1755-6724.2008.tb00709.x
Wang,H.Y.,Li,C.,Hu,C.Y.,et al.,2015.Spurious Thermoluminescence Characteristics of the Ediacaran Doushantuo Formation(ca.635-551Ma)and Its Implications for Marine Dissolved Organic Carbon Reservoir.Journal of Earth Science,26(6):883-892.doi:10.1007/s12583-015-0650-3
Wilby,P.R.,Carney,J.N.,Howe,M.P.A.,2011.A Rich Ediacaran Assemblage from Eastern Avalonia:Evidence of Early Widespread Diversity in the Deep Ocean.Geology,39(7):655-658.doi:10.1130/g31890.1
Wilby,P.R.,Kenchington,C.G.,Wilby,R.L.,2015.Role of Low Intensity Environmental Disturbance in Structuring the Earliest(Ediacaran)Macrobenthic Tiered Communities.Palaeogeography,Palaeoclimatology,Palaeoecology,434:14-27.doi:10.13039/501100000305
Xiao,S.H.,Yuan,X.L.,Steiner,M.,et al.,2002.Macroscopic Carbonaceous Compressions in a Terminal Proterozoic Shale:A Systematic Reassessment of the Miaohe Biota,South China.Journal of Paleontology,76(2):347-376.doi:10.1666/0022-3360(2002)076<0347:mcciat>2.0.co;2
Xiao,S.,Zhang,Y.,Knoll,A.H.,1998.Three-Dimensional Preservation of Algae and Animal Embryos in a Neoproterozoic Phosphorite.Nature,391:553-558.doi:10.1038/35318
Xin,H.,Jiang,S.Y.,Yang,J.H.,et al.,2016.Rare Earth Element Geochemistry of Phosphatic Rocks in Neoproterozoic Ediacaran Doushantuo Formation in Hushan Section from the Yangtze Gorges Area,South China.Journal of Earth Science,27(2):204-210.doi:10.1007/s12583-015-0653-5
Yin,L.M.,Zhu,M.Y.,Knoll,A.H.,et al.,2007.Doushantuo Embryos Preserved Inside Diapause Egg Cysts.Nature,446(7136):661-663.doi:10.1038/nature05682
Yin,Z.J.,Zhu,M.Y.,Davidson,E.H.,et al.,2015.Sponge Grade Body Fossil with Cellular Resolution Dating 60 Myr before the Cambrian.Proceedings of the National Academy of Sciences,112:1453-1460.doi:10.1073/pnas.1414577112
Yuan,X.L.,Chen,Z.,Xiao,S.H.,et al.,2011.An Early Ediacaran Assemblage of Macroscopic and Morphologically Differentiated Eukaryotes.Nature,470(7334):390-393.doi:10.1038/nature09810
Zhao,Z.,Xing,Y.,Ding,Q.,et al.,1988.The Sinian System of Hubei.China University of Geosciences Press,Wuhan.205(in Chinese)
Zhu,M.Y.,Gehling,J.G.,Xiao,S.H.,et al.,2008.Eight-Armed Ediacara Fossil Preserved in Contrasting Taphonomic Windows from China and Australia.Geology,36(11):867.doi:10.1130/g25203a.1