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Acritarchs in the Ediacaran of Australia — Local or global significance?: Evidence from the Lake Maurice West 1 drillcore
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2011 (English)In: Review of Palaeobotany and Palynology, ISSN 0034-6667, E-ISSN 1879-0615, Vol. 1-2, no 166, 12-28 p.Article in journal (Refereed) Published
Abstract [en]

The Lake Maurice West 1 drillhole is located in the Officer Basin in South Australia and penetrates a siliciclastic rock succession of Ediacaran age (ca 635–542 Ma). Within this succession well-preserved organic-walled microfossils called acritarchs have been recovered from the Dey Dey Mudstone and Karlaya Limestone, which constitutes a major part of the Ungoolya Group. The assemblage consists of biostratigraphically useful acanthomorphic acritarchs in addition to a diverse assemblage of unornamented leiospheres, filamentous microbiota and some undetermined taxa. Here we describe eight acanthomorphic taxa belonging to three distinctive Ediacaran genera (Cavaspina, Ceratosphaeridium and Tanarium), of which one is described as a new species (Cavaspina amplitudinis sp. nov.). Similar acanthomorphic assemblages are known from Ediacaran strata worldwide and biostratigraphic subdivision of the system based on the occurrence of cosmopolitan taxa is possible in Australia, China, Siberia and Baltica (East European Platform), and perhaps in other areas. The Lake Maurice West 1 microfossil assemblage adds to the growing record of the Ediacaran acritarchs and supports a biostratigraphic scheme for the Ediacaran System at a global scale.

Place, publisher, year, edition, pages
2011. Vol. 1-2, no 166, 12-28 p.
Keyword [en]
acritarchs, Ediacaran, biostratigraphy, Neoproterozoic, Australia
National Category
Geology
Research subject
Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
URN: urn:nbn:se:uu:diva-157148DOI: 10.1016/j.revpalbo.2011.04.005ISI: 000293317400002OAI: oai:DiVA.org:uu-157148DiVA: diva2:435160
Available from: 2011-08-17 Created: 2011-08-17 Last updated: 2017-12-08Bibliographically approved

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Willman, SebastianMoczydlowska, Malgorzata

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