Eumetazoan Fossils in Terminal Proterozoic Phosphorites?

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Eumetazoan Fossils in Terminal Proterozoic Phosphorites?

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Title: Eumetazoan Fossils in Terminal Proterozoic Phosphorites?
Author: Yuan, Xunlai; Xiao, Shuhai; Knoll, Andrew Herbert

Note: Order does not necessarily reflect citation order of authors.

Citation: Xiao, Shuhai H., Xunlai L. Yuan, and Andrew H. Knoll. 2000. Eumetazoan fossils in terminal Proterozoic phosphorites? Proceedings of the National Academy of Sciences of the United States of America 97(25): 13684-13689.
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Abstract: Phosphatic sedimentary rocks preserve a record of early animal life different from and complementary to that provided by Ediacaran fossils in terminal Proterozoic sandstones and shales. Phosphorites of the Doushantuo Formation. South China. contain eggs, egg cases, and stereoblastulae that document animals of unspecified phylogenetic position; small fossils containing putative spicules may specifically record the presence of sponges. Microfossils recently interpreted as the preserved gastrulae of cnidarian and bilaterian metazoans can alternatively be interpreted as conventional algal cysts and/or egg Eases modified by diagenetic processes known to have had a pervasive influence on Doushantuo phosphorites. Regardless of this interpretation, evidence for Doushantuo eumetazoans is provided by millimeter-scale tubes that display tabulation and apical budding characteristic of some Cnidaria, especially the extinct tabulates. Like some Ediacaran remains, these small, benthic, colonial fossils may represent stemgroup eumetazoans or stem-group cnidarians that lived in the late Proterozoic ocean.
Published Version: http://dx.doi.org/10.1073/pnas.250491697
Other Sources: http://www.pnas.org/content/97/25/13684.full.pdf+html
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC17636/
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:3645201

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  • FAS Scholarly Articles [7106]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
 
 

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