Devonian vertebrate microremains from southeastern Australia

correlation with conodonts and inferred palaeoecology

Alison Basden

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    1 Citation (Scopus)

    Abstract

    Conodont studies in Victoria of the Buchan Group at Buchan and the Coopers Creek limestone at Tyers-Boola indicate conodont zonation of dehiscens-serotinus zones and sulcatusdehiscens zones respectively, allowing precise dating of the accompanying microvertebrates. The lowermost and uppermost units of the coeval Murrumbidgee Group at Burrinjuck, New South Wales, have been directly dated by conodonts, as ranging from pireneae to serotinus zones. Other studies of corals and brachiopods infer approximate conodont ages for these intermediate horizons. Accompanying vertebrate microremains from the limestones at Burrinjuck, Buchan and the Tyers-Boola area have extended the stratigraphic range of placoderms Brindabellaspis sp., Weejasperaspis sp., Buchanosteus sp., and Goodradigbeeon australianum, and acanthodians Nostolepoides platymarginata, Trundlelepis cervicostulata, and Gomphonchus? bogongensis. Known geographic ranges have been increased for placoderms Brindabellaspis sp., Weejasperaspis sp., Buchanosteus sp., and Wijdeaspis sp., acanthodians Nostolepoides platymarginata, Trundlelepis cervicostulata, Gomphonchus? bogongensis, “Nostolepis” guangxiensis, Cheiracanthoides sp cf C. wangi and Rhadinacanthus sp, chondrichthyan Ohiolepis sp and osteichthyans Ligulalepis sp and Onychodus sp. All three study areas were shallow marine in the early Devonian Microremains of chondrichthyan Ohiolepis sp. and osteichthyan Ligulalepis sp were more common in shallow water sediments, while more fossiliferous horizons tended to show some indication of a muddy substrate.
    Original languageEnglish
    Title of host publicationMid-Palaeozoic bio- and geodynamics
    Subtitle of host publicationthe North Gondwana-Laurussia interaction : proceedings of the 15th International Senckenberg Conference
    EditorsPeter Königshof, Eberhard Schindler
    Place of PublicationStuttgart
    PublisherE. Schweizerbart'sche Verlagsbuchhandlung
    Pages21-37
    Number of pages17
    ISBN (Print)3510613503
    Publication statusPublished - 2003
    EventInternational Senckenberg Conference (15th : 2001) - Frankfurt, Germany
    Duration: 11 May 200121 May 2001

    Publication series

    NameCourier Forschungsinstitut Senkenberg
    PublisherE Schweizerbart'sche Verlagsbuchhandlung
    Volume242
    ISSN (Print)0341-4116

    Conference

    ConferenceInternational Senckenberg Conference (15th : 2001)
    CityFrankfurt, Germany
    Period11/05/0121/05/01

    Keywords

    • Devonian
    • Australia
    • microvertebrate
    • conodont
    • palaeoecology
    • biostratigraphy

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