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Effects of Past Global Change on Life (1995) / Chapter Skim
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Pages 24-24

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From page 24...
... has argued on sedimentological and geochemical grounds that stromatolites in lacustrine carbonates of the 2800 Ma Fortescue Group, Australia, must have been built by oxygenic photoautotrophs. If Hayes' interpretation of the carbon isotope record is correct, cyanobacteria radiated 2800 Ma or earlier.
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Key Terms

  • isotope record
  • aerobic metabolism
  • fossil record


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