<p>Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals</p>

doi:10.1016/j.earscirev.2021.103913

NIGPAS OpenIR

	Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals
	Bowyer, Fred T.1,2; Zhuravlev, Andrey Yu 3; Wood, Rachel 2; Shields, Graham A.4; Zhou, Ying 4; Curtis, Andrew 2; Poulton, Simon W.1; Condon, Daniel J.5; Yang, Chuan 5; Zhu, Maoyan（朱茂炎）6,7,8
	2022-02-01
发表期刊	EARTH-SCIENCE REVIEWS
ISSN	0012-8252
卷号	225 页码:24
摘要	The Ediacaran-Cambrian transition, which incorporates the radiation of animals, lacks a robust global temporal and spatial framework, resulting in major uncertainty in the evolutionary dynamics of this critical radiation and its relationship to changes in palaeoenvironmental geochemistry. We first present a new delta C-13(carb) composite reference curve for the Ediacaran Nama Group of southern Namibia, and we then outline four new possible global age models (A to D) for the interval 551-517 million years ago (Ma). These models comprise composite carbonate-carbon isotope (delta C-13(carb)) curves, which are anchored to radiometric ages and consistent with stron-tium isotope chemostratigraphy, and are used to calibrate metazoan distribution in space and time. These models differ most prominently in the temporal position of the basal Cambrian negative delta(13)C(carb & nbsp;)excursion (BACE). Regions that host the most complete records show that the BACE nadir always predates the Ediacaran-Cambrian boundary as defined by the first appearance datum (FAD) of the ichnospecies Treptichnus pedum. Whilst trep-tichnid traces are present in the late Ediacaran fossil record, the FAD of the ichnospecies T. pedum appears to post-date the last appearance datums (LADs) of in situ representatives of the skeletal organisms Cloudina and Namacalathus in all environments with high-resolution delta C-13(carb & nbsp;) data. Two age models (A and B) place the BACE within the Ediacaran, and yield an age of ~538.8 Ma for the Ediacaran-Cambrian boundary; however models C and D appear to be the most parsimonious and may support a recalibration of the boundary age by up to 3 Myr younger. All age models reveal a previously underappreciated degree of variability in the terminal Ediacaran, incorporating notable positive and negative excursions that precede the BACE. Nothwithstanding remaining uncertainties in chemostratigraphic correlation, all models support a pre-BACE first appearance of Cambrian-type shelly fossils in Siberia and possibly South China, and show that the Ediacaran-Cambrian transition was a protracted interval represented by a series of successive radiations.
关键词	Ediacaran Cambrian Evolution Chronostratigraphy Biostratigraphy Chemostratigraphy Carbon isotopes Strontium isotopes Temporal calibration Geochronology
DOI	10.1016/j.earscirev.2021.103913
收录类别	SCI
语种	英语
关键词[WOS]	YANGTZE GORGES AREA ; SOUTH CHINA ; CARBON-ISOTOPE ; GEOCHRONOLOGICAL CONSTRAINTS ; FOSSIL ASSEMBLAGES ; GLOBAL CORRELATION ; INTEGRATED CARBON ; LANTIAN FORMATION ; OLENEK UPLIFT ; CHEMOSTRATIGRAPHY
资助项目	NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme[NE/P013643/1] ; NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme[NSFC/41661134048] ; Chinese Academy of Sciences[XDB18000000] ; Chinese Academy of Sciences[XDB 26000000] ; NERC[NE/R010129/1] ; NERC[NE/T008458/1] ; NERC[121031600198-2] ; Royal Society Wolfson Research Merit Award ; State Order of the Government of the Russian Federation[04-1-21]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000786957000002
项目资助者	NERC-NSFC Biosphere Evolution Transitions and Resilience (BETR) programme ; Chinese Academy of Sciences ; NERC ; Royal Society Wolfson Research Merit Award ; State Order of the Government of the Russian Federation
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/40738
专题	中国科学院南京地质古生物研究所
通讯作者	Bowyer, Fred T.
作者单位	1.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England 2.Univ Edinburgh, Sch GeoSci, James Hutton Rd, Edinburgh EH9 3FE, Midlothian, Scotland 3.Lomonosov Moscow State Univ, Fac Biol, Dept Biol Evolut, Leninskie Gory 1 12, Moscow 119234, Russia 4.UCL, Dept Earth Sci, Gower St, London WC1E 6BT, England 5.British Geol Survey, Keyworth NG12 5GG, Notts, England 6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 7.Chinese Acad Sci, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China 8.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 10049, Peoples R China
推荐引用方式 GB/T 7714	Bowyer, Fred T.,Zhuravlev, Andrey Yu,Wood, Rachel,et al. Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals [J]. EARTH-SCIENCE REVIEWS,2022,225:24.
APA	Bowyer, Fred T..,Zhuravlev, Andrey Yu.,Wood, Rachel.,Shields, Graham A..,Zhou, Ying.,...&Zhu, Maoyan.(2022). Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals .EARTH-SCIENCE REVIEWS,225,24.
MLA	Bowyer, Fred T.,et al." Calibrating the temporal and spatial dynamics of the Ediacaran - Cambrian radiation of animals ".EARTH-SCIENCE REVIEWS 225(2022):24.