Blackwell Publishing

"Punctuated equilibria: an alternative to phyletic gradualism" (1972) pp 82-115 in "Models in paleobiology", edited by Schopf, TJM Freeman, Cooper & Co, San Francisco.

Eldredge, N. & Gould, S.J.

The famous original essay which criticizes the theory of phyletic gradualism and argues that evolution proceeds in a pattern of punctuated equilibrium.

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