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Calibrating rates of early Cambrian evolution

S A Bowring1, J P Grotzinger, C E Isachsen

  • 1Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge 02139, USA.

Science (New York, N.Y.)
|September 3, 1993
PubMed

Keywords:
NASA Discipline ExobiologyNon-NASA Center

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