PerspectiveEvolution

Life on the Early Earth: A Sedimentary View

Science  15 Apr 2005:
Vol. 308, Issue 5720, pp. 366-367
DOI: 10.1126/science.1107227

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Summary

The study of microfossils (fossils of microorganisms) from ancient sediments such as those in Australia and South Africa have yielded much information about life on the early Earth. In her Perspective, Westall discusses the pressing questions that still need to be answered, which include how to distinguish between biogenic (life) and abiogenic (nonlife) signatures left behind in the sediments harboring microfossils

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