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DOI	10.1038/s41559-020-01334-7
	Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record
	Bobrovskiy I.; Hope J.M.; Nettersheim B.J.; Volkman J.K.; Hallmann C.; Brocks J.J.
发表日期	2021
ISSN	2397-334X
起始页码	165
结束页码	168
卷号	5 期号:2
英文摘要	The earliest fossils of animal-like organisms occur in Ediacaran rocks that are approximately 571 million years old. Yet 24-isopropylcholestanes and other C30 fossil sterol molecules have been suggested to reflect an important ecological role of demosponges as the first abundant animals by the end of the Cryogenian period (>635 million years ago). Here, we demonstrate that C30 24-isopropylcholestane is not diagnostic for sponges and probably formed in Neoproterozoic sediments through the geological methylation of C29 sterols of chlorophyte algae, the dominant eukaryotes at that time. These findings reconcile biomarker evidence with the geological record and revert the oldest evidence for animals back into the latest Ediacaran. ? 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	biological marker; sterol; animal; eukaryote; fossil; Animals; Biomarkers; Eukaryota; Fossils; Sterols
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257032
作者单位	Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia; Max Planck Institute for Biogeochemistry, Jena, Germany; MARUM — Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia
推荐引用方式 GB/T 7714	Bobrovskiy I.,Hope J.M.,Nettersheim B.J.,et al. Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record[J],2021,5(2).
APA	Bobrovskiy I.,Hope J.M.,Nettersheim B.J.,Volkman J.K.,Hallmann C.,&Brocks J.J..(2021).Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record.Nature Ecology & Evolution,5(2).
MLA	Bobrovskiy I.,et al."Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record".Nature Ecology & Evolution 5.2(2021).