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The oldest bivalved arthropods from the early Cambrian of East Gondwana: Systematics, biostratigraphy and biogeography
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2011 (English)In: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 19, no 1, 310-326 p.Article in journal (Refereed) Published
Abstract [en]

The oldest bradoriid fauna from Australia, occurring in the lower Cambrian Ajax and Wirrapowie limestones of the Hinders Ranges, South Australia consists of eleven taxa, including one new genus and species, Quadricona madonnae gen. et sp. nov. and two new species, Liangshanella circumbolina sp. nov. and Zepaera jagoi sp. nov. In the Ajax Limestone, Liangshanella circumbolina sp. nov. occurs c. 20 m below the FAD of the zonal trilobite Abadiella huoi. This pre-trilobitic occurrence represents the oldest bivalved arthropod hitherto known from East Gondwana and suggests a lower Cambrian (Series 2, Stage 3) age for the assemblage. The recognition of distinct bradoriid assemblages associated with the Abadiella huoi (Atdabanian). Pararaia tatei, P. bunyerooensis and P. janeae (all Botoman) trilobite biozones in South Australia indicates great potential for future regional biostratigraphic correlation. Quantitative biogeographic analysis including new taxonomic data from the lower Cambrian of South Australia, highlights the strong endemism displayed by early Cambrian bradoriid communities and strengthens the close faunal affinities with South China and Antarctica.

Place, publisher, year, edition, pages
2011. Vol. 19, no 1, 310-326 p.
Keyword [en]
Cambrian, Arthropoda, Bradoriida, Phosphatocopida, South Australia
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-149724DOI: 10.1016/j.gr.2010.05.012ISI: 000286960100023OAI: oai:DiVA.org:uu-149724DiVA: diva2:405383
Available from: 2011-03-22 Created: 2011-03-22 Last updated: 2017-12-11Bibliographically approved

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