A preliminary brachiopod biostratigraphy for the Lower Cambrian of the Flinders Ranges, South Australia

Glenn A. Brock, Christian B. Skovsted, Lars E. Holmer, John R. Paterson

    Research output: Contribution to journalMeeting abstract

    Abstract

    Detailed sampling of key Lower Cambrian successions in eastern South Australia (Stuart Shelf, Flinders Ranges and Yorke Peninsula) combined with investigation of previously unstudied shelly fossil collections belonging to the late Brian Daily has revealed a plethora of exquisitely preserved, previously undocumented, organophosphatic and calciate brachiopods from this region. These new assemblages provide new data for a prelimianary biostratigraphic “biozonation” for the Lower Cambrian succession of South Australian based on brachiopods. Whilst much work needs to be completed, four distinct brachiopod biozone assemblages can be recognised in the Lower Cambrian succession of South Australia. The oldest assemblage, dominated by the cryptotretid Askepasma occurs in pre-trilobitic (mid Atdabanian) successions of the Wilkawillina and Wirrapowie limestones. The top of the Askepasma assemblage zone is broadly equivalent with the Abadiella huoi trilobite zone (late Atdabanian) and best represented in the Flinders Ranges, but also occurs in the Stansbury Basin and on the Stuart Shelf. The succeeding assemblages, best defined in the Stansbury Basin, are early Botoman in age and characterused by Eoobolu, Minlatonia, Eodicellomus and Kyrshabaktella. The youngest (Toyonian) assemblage, best represented in the Wirrealpa Limestone is characterised by the first acrotretid (Vandalotreta) in the South Australian sequence, along with Karathele and the calciate taxon Trematobolus wirrialpensis.
    Original languageEnglish
    Number of pages1
    JournalAbstracts No. 84 South Australia 2006 XI International Conference of the Cambrian Stage Subdivision Working Group
    Publication statusPublished - 2006
    EventXI International conference of the Cambrian Stage Subdivision Working Group - Adelaide, Australia
    Duration: 14 Aug 200624 Aug 2006

    Fingerprint Dive into the research topics of 'A preliminary brachiopod biostratigraphy for the Lower Cambrian of the Flinders Ranges, South Australia'. Together they form a unique fingerprint.

    Cite this