Recognising and interpreting the fossils of early eukaryotes

Emmanuelle J. Javaux*, Andrew H. Knoll, Malcolm Walter

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    126 Citations (Scopus)


    Using molecular sequence data, biologists can generate hypotheses of protistan phylogeny and divergence times. Fossils, however, provide our only direct constraints on the timing and environmental context of early eukaryotic diversification. For this reason, recognition of eukaryotic fossils in Proterozoic rocks is key to the integration of geological and comparative biological perspectives on protistan evolution. Microfossils preserved in shales of the ca. 1500 Ma Roper Group, northern Australia, display characters that ally them to the Eucarya, but, at present, attribution to any particular protistan clade is uncertain. Continuing research on wall ultrastructure and microchemistry promises new insights into the nature and systematic relationships of early eukaryotic fossils.

    Original languageEnglish
    Pages (from-to)75-94
    Number of pages20
    JournalOrigins of Life and Evolution of the Biosphere
    Issue number1
    Publication statusPublished - Feb 2003


    • Chemistry
    • Early eukaryotes
    • Evolution
    • Molecular phylogeny
    • Morphology
    • Proterozoic
    • Ultrastructure


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