Ancient microspheres: abiogenic, protobiogenic, or biogenic?

  title={Ancient microspheres: abiogenic, protobiogenic, or biogenic?},
  author={S. Fox and R. M. Syren and Marylou Ingram and B. J. Price and J. Costello},
  journal={Precambrian Research},
Criteria of biogenicity of microspheroidal objects, which have been interpreted as microfossils, are here reviewed in the light of additional data. Much weight has been placed by some commentators on constrained heterogeneity as a primary criterion of biogenicity. The data from the field and laboratory suggest the need for continuing reservation in the interpretation of these objects. On the basis of these and other data, reasons are given for the alternative explanation that the objects are… Expand
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  • M. Walsh
  • Geology, Medicine
  • Precambrian research
  • 1992
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