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        Part of Your Inner Fish
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        When Humans Lost Their Tails | Your Inner Fish

        By looking at our vestigial tailbone—the coccyx—we can trace back the history of human and primate evolution. Unlike all other primates, apes don't have a tail, but when did our ancestors lose this potentially useful appendage? Paleoanthropologist Holly Dunsworth introduces Neil Shubin to Proconsul, a fossil ape that provides some answers to that question.

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