Archean Molecular Fossils and the Early Rise of Eukaryotes

DOI Web Site 被引用文献31件
  • Jochen J. Brocks
    School of Geosciences, University of Sydney, Sydney, NSW 2006, Australia.
  • Graham A. Logan
    Australian Geological Survey Organisation (AGSO), Canberra, ACT 2601, Australia.
  • Roger Buick
    School of Geosciences, University of Sydney, Sydney, NSW 2006, Australia.
  • Roger E. Summons
    Australian Geological Survey Organisation (AGSO), Canberra, ACT 2601, Australia.

書誌事項

公開日
1999-08-13
DOI
  • 10.1126/science.285.5430.1033
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p>Molecular fossils of biological lipids are preserved in 2700-million-year-old shales from the Pilbara Craton, Australia. Sequential extraction of adjacent samples shows that these hydrocarbon biomarkers are indigenous and syngenetic to the Archean shales, greatly extending the known geological range of such molecules. The presence of abundant 2α-methylhopanes, which are characteristic of cyanobacteria, indicates that oxygenic photosynthesis evolved well before the atmosphere became oxidizing. The presence of steranes, particularly cholestane and its 28- to 30-carbon analogs, provides persuasive evidence for the existence of eukaryotes 500 million to 1 billion years before the extant fossil record indicates that the lineage arose.</jats:p>

収録刊行物

  • Science

    Science 285 (5430), 1033-1036, 1999-08-13

    American Association for the Advancement of Science (AAAS)

被引用文献 (31)*注記

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