Ordovician brachiopod biostratigraphy of central-western New South Wales

I. G. Percival

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    Late Ordovician (Caradoc) formations of the Molong High and Parkes Platform in central-western NSW contain five brachiopod zones. The earliest, Fauna A, induces the diagnostic species Webbyspira principalis. Fauna AB is typified by the abrupt appearance of several new diminutive genera together with rapidly evolving transitional forms. Brachiopod Fauna B is contemporaneous with coral/stromatoporoid Fauna II. Abrupt faunal changeover at the end of Fauna B time coincided with cessation of carbonate deposition along the eastern Molong High and Parkes Platform. Graptolitic siltstones and spiculites at this level contain six brachiopod genera new to the succession, constituting Fauna C. Higher levels in the Parkes Platform sequence contain Fauna D. The stratigraphic significance of each zone is outlined, and correlations with North America and Kazakhstan are suggested. -from Author

    Original languageEnglish
    Pages (from-to)215-229
    Number of pages15
    JournalUnknown Journal
    Publication statusPublished - 1992

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