Rare fossils (Conulata; Rostroconchia; Nautiloidea) from the late Ordovician of Central New South Wales

Ian G. Percival*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Four decades of detailed palaeontological investigations into highly fossiliferous Upper Ordovician strata of the Macquarie Arc in central New South Wales has revealed several unique specimens which in some instances represent the only known examples of phyla or subphyla in this region. Conulariids have not previously been reported from Ordovician rocks in NSW; here is documented Conularia sp., known from one specimen found in the Fossil Hill Limestone, and several microscopic specimens of different genera (including Metaconularial sp., and the new genus and species Microconularia fragilis) from deep water allochthonous limestones (Malongulli Formation, and Downderry Limestone Member of the Ballingoole Limestone). The first Ordovician rostroconch mollusc from NSW is described from a solitary individual of Eopteria, from the top of the Malongulli Formation. A coiled nautiloid tentatively identified as Plectoceras from the Gunningbland Formation, again represented by a single specimen, is also described and illustrated.

    Original languageEnglish
    Pages (from-to)179-191
    Number of pages13
    JournalProceedings of the Linnean Society of New South Wales
    Volume130
    Publication statusPublished - Mar 2009

    Keywords

    • Conulariid
    • Late Ordovician
    • Macquarie Arc
    • Nautiloid
    • Rostroconch

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