Part 4: Problems in Paleontology

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4 Terms

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Q: What is phyletic gradualism?

A: Species evolve gradually over time; problem of pseudoextinction makes recognition tricky

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Q: What is punctuated equilibrium (Eldredge & Gould, 1972)?

A: Species remain in long-term stasis, interrupted by rapid bursts of speciation

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Q: Which model fits the fossil record best?

A: Punctuated equilibrium is most consistent, but gradualism examples exist too

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