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  • Author or Editor: R. Linnda Caporael x
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This paper reviews evidence from paleoanthropology about the mode and tempo of human evolutionary history. Rather than a gradualistic, “uphill” directional change as one species is transformed into another by selection, the fossil record indicates many species related to ours, some quite successful with respect to their longevity as a lineage. The implications of the fossil record include a revival of group selection, a recognition of groups as selective (and selected) environment, and a concern about the “grain” or complexity of adaptations.

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