NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
A uniquely preserved Ediacaran fossil with direct evidence for a quilted bodyplan
Xiao, SH; Shen, B; Zhou, CM (周传明); Xie, GW (谢古巍); Yuan, XL (袁训来)
2005-07-19
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume102Issue:29Pages:10227-10232
Abstract

Ediacara fossils are among the oldest known macroscopic and complex life forms. Their bodyplan, ecology, and phylogenetic affinities have been controversial. On the basis of taphonomic observations, Seilacher [Seilacher, A. (1989) Lethaia 22, 229-239] proposed that the core elements of the Ediacara biota, the vendobionts, were constructed with serially or fractally arranged quilts or tube-like units. However, anatomy of quilt walls has been rarely reported, because most Ediacara fossils are preserved as casts and molds in siliciclastic rocks with inadequate morphological resolution. Here, we report an Ediacara form, uniquely preserved in situ and in three dimensions with its organic walls cast by early diagenetic calcite, from bituminous limestone of the 551- to 542-mega-annum Dengying Formation of South China. Despite diagenetic tampering, serial sections show that the Dengying form consists of biserially arranged, tube-like quilts, each with two vertical side walls, a floor, a roof, and an open distal end. Three-dimensional morphological complexity of the Dengying form excludes a microbial interpretation but is broadly consistent with vendobionts. Unlike classic fronclose vendobionts sensu Seilacher, however, the Dengying form probably lacked a smooth margin and had distally open quilts. It probably lived procumbently at or near the water-sediment interface and shows evidence for substrate utilization. Despite its uncertain phylogeny, ontogeny, and functional biology, the Dengying form adds to Ediacaran biodiversity, places key constraints on the ecology and extinction of Ediacara organisms, and points to the need to explore an alternative taphonomic window for Ediacara biology.

KeywordNeoproterozoic Vendobionta Taphonomy Ecology
DOI10.1073/pnas.0502176102
Language英语
WOS KeywordEvolution ; China ; Vendobionta ; Carbonates ; Australia ; Cloudina ; Namibia ; Biotas ; Facies ; Record
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000230665800044
PublisherNATL ACAD SCIENCES
Citation statistics
Cited Times:67[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/640
Collection中国科学院南京地质古生物研究所
其他
Corresponding AuthorXiao, SH
Affiliation1.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA
2.Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Xiao, SH,Shen, B,Zhou, CM ,et al. A uniquely preserved Ediacaran fossil with direct evidence for a quilted bodyplan[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2005,102(29):10227-10232.
APA Xiao, SH,Shen, B,Zhou, CM ,Xie, GW ,&Yuan, XL .(2005).A uniquely preserved Ediacaran fossil with direct evidence for a quilted bodyplan.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,102(29),10227-10232.
MLA Xiao, SH,et al."A uniquely preserved Ediacaran fossil with direct evidence for a quilted bodyplan".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 102.29(2005):10227-10232.
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