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theory of punctuated equilibrium

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Noun1.theory of punctuated equilibrium - a theory of evolution holding that evolutionary change in the fossil record came in fits and starts rather than in a steady process of slow change
evolutionism, theory of evolution, theory of organic evolution - (biology) a scientific theory of the origin of species of plants and animals


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But only the theory of punctuated equilibrium, Gould argued, could predict exactly what we have found (and not found) in the fossil record--evidence of overwhelming changelessness and sudden morphological macroevolution among small and geographically peripheral populations.
Paleontologist Stephen Jay Gould's description of the evolutionary theory of punctuated equilibrium points out that geologically abrupt appearance and subsequent extended stasis of species is a fair description of evolutionary reality.
The observation of stasis in the fossil record and the theory of punctuated equilibrium were the main focus of the deliberations.
 
 
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