Palaeontology: Respect for stromatolites

  title={Palaeontology: Respect for stromatolites},
  author={S. Awramik},
Is it time to stop worrying over whether the ancient structures called stromatolites are of microbial origin? ‘Yes’ is the answer to emerge from field and lab work on a 3,430-million-year-old marine ecosystem.Biodiversity rocksThe existence — or otherwise — of life on Earth in the Archaean eon (prior to 2,500 million years ago) has been a matter of heated debate. Much of this centres on whether layered sedimentary structures called stromatolites reflect the activities of colonial microorganisms… Expand
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