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Nature. 1993 Nov 18;366(6452):223-7.

Punctuated equilibrium comes of age.

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  • 1Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts 02138.


The intense controversies that surrounded the youth of punctuated equilibrium have helped it mature to a useful extension of evolutionary theory. As a complement to phyletic gradualism, its most important implications remain the recognition of stasis as a meaningful and predominant pattern within the history of species, and in the recasting of macroevolution as the differential success of certain species (and their descendants) within clades.

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