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A Peek At the Past: Fossil Patterns - Gradualism vs. Punctuated Equilibria

A Peek At the Past: Fossil Patterns - Gradualism vs. Punctuated Equilibria

In this evolution lesson, two sets of simulated fossils (caminalcules) are provided as cutouts. Students arrange them on two time scales. One set produces a visual example of gradualism; the other shows punctuated equilibria. Students will learn the following concepts: some evolutionary change is rapid and discontinuous, and some change is gradual; fossil patterns can provide clues to the past; and speciation explains evolutionary branching and diversification.

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