Chitinozoans from the Middle Ordovician (Darriwilian) Goldwyer and Nita formations, Canning Basin (Western Australia)

Theresa Winchester-Seeto*, Clinton Foster, Teresa O'Leary

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)


    Chitinozoans from seven cores in the Middle Ordovician upper Goldwyer and Nita formations are documented, and three assemblages are delineated. Six out of twelve species found in the Canning Basin, in eastern Gondwana, are also found in Laurentia, confirming the close relationship between chitinozoans in the two palaeocontinents. The assemblages correlate with Zone 05 of Combaz and Peniguel, and the undefined zone immediately overlying the Cyathochitina jenkinsi Zone in the biozonation designed for Laurentia. The relationship between contemporaneous assemblages in Baltica, Avalonia and the northern Gondwana Domain is discussed with a small number of species in common with Baltica and Avalonia, and no definite links with northern Gondwana. Two new species Calpichitina windjana, and Belonechitina vibrissa are described.

    Original languageEnglish
    Pages (from-to)271-300
    Number of pages30
    JournalActa Palaeontologica Polonica
    Issue number3
    Publication statusPublished - 2000


    • Australia
    • Biozonation
    • Canning Basin
    • Chitinozoans
    • Darriwilian
    • Middle Ordovician


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