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Contingency (evolutionary biology)

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In biology, the wonderful life theory, also known as contingency theory, postulates that after hundreds of different phyla evolved during the Cambrian period, many of them subsequently became extinct, leaving the relatively few phyla that exist today.[1] The theory was first suggested in 1989 by Stephen Jay Gould in his book Wonderful Life.[2]

References

  1. ^ Bothamley, Jennifer (2002). Dictionary of Theories. Barnes and Noble. p. 557.
  2. ^ Lewin, Roger (1992-05-01). "Whose View of Life". Discover Magazine.


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