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Surfing in and on microbial mats: Oxygen-related behavior of a terminal Ediacaran bilaterian animal
Xiao, Shuhai1; Chen, Zhe (陈哲)2,3; Zhou, Chuanming (周传明)2,3; Yuan, Xunlai (袁训来)2,3
2019-11-01
Source PublicationGEOLOGY
ISSN0091-7613
Volume47Issue:11Pages:1054-1058
Abstract

Geochemical evidence suggests that terminal Ediacaran (ca. 551-539 Ma) oceans experienced expansive anoxia and dynamic redox conditions, which are expected to have impacted animal distribution and behaviors. However, fossil evidence for oxygen-related behaviors of terminal Ediacaran animals is poorly documented. Here, we report a terminal Ediacaran trace fossil that records redox-regulated behaviors. This trace fossil, Yichnus levis new ichnogenus and new ichnospecies, consists of short and uniserially aligned segments of horizontal burrows that are closely associated with microbial mats. Thin-section analysis shows that the trace-making animal moved repeatedly in and out of microbial mats, with mat-burrowing intervals interspersed by epibenthic intermissions. This animal is hypothesized to have been a bilaterian exploring an oxygen oasis in microbial mats. Such intermittent burrowing behavior reflects challenging and dynamic redox conditions in both the water column and microbial mats, highlighting the close relationship between terminal Ediacaran animals and redox dynamics.

DOI10.1130/G46474.1
Language英语
WOS KeywordTRACE-FOSSIL ; CONSUMPTION ; EVOLUTION
Funding ProjectNational Science Foundation[EAR-1528553] ; National Geographic Society[9564-14] ; Chinese Academy of Sciences[XDB18000000] ; Chinese Academy of Sciences[QYZDJ-SSW-DQC009] ; Chinese Academy of Sciences[XDB26000000]
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000491287900010
Funding OrganizationNational Science Foundation ; National Geographic Society ; Chinese Academy of Sciences
PublisherGEOLOGICAL SOC AMER, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/27858
Collection中国科学院南京地质古生物研究所
Corresponding AuthorXiao, Shuhai; Yuan, Xunlai (袁训来)
Affiliation1.Virginia Tech, Dept Geosci, Blacksburg, VA 24060 USA
2.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Shuhai,Chen, Zhe ,Zhou, Chuanming ,et al. Surfing in and on microbial mats: Oxygen-related behavior of a terminal Ediacaran bilaterian animal[J]. GEOLOGY,2019,47(11):1054-1058.
APA Xiao, Shuhai,Chen, Zhe ,Zhou, Chuanming ,&Yuan, Xunlai .(2019).Surfing in and on microbial mats: Oxygen-related behavior of a terminal Ediacaran bilaterian animal.GEOLOGY,47(11),1054-1058.
MLA Xiao, Shuhai,et al."Surfing in and on microbial mats: Oxygen-related behavior of a terminal Ediacaran bilaterian animal".GEOLOGY 47.11(2019):1054-1058.
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