What Is the Theory of Punctured Equilibria?

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Punctuated equilibrium is a theory in evolutionary biology that suggests species experience long periods of stability interrupted by brief episodes of significant change. This theory contrasts with the traditional view of gradual evolution. Key sources for understanding this concept include the Wikipedia page on punctuated equilibrium and the TalkOrigins FAQ, which provide detailed explanations and examples of the theory's implications in evolutionary science.
Icebreaker
Can someone point me to a source (english or french) that explains the theory? I'm not even sure this is the exact name, actually.
 
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