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Periodic extinction of families and genera

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Science  21 Feb 1986:
Vol. 231, Issue 4740, pp. 833-836
DOI: 10.1126/science.11542060

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vol. 231 no. 4740 833-836

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Author Information

  1. DM Raup,
  2. JJ Sepkoski Jr
  1. Department of Geophysical Sciences, University of Chicago, IL 60637, USA.

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