bipedalism :

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  • n  the bodily attribute of being bipedal; having two feet
    bipedalism made the human form of birth possible

  • All these issues -- bipedalism, the forest-dwelling theory, the question of how high ramidus sits in the evolutionary tree -- can be settled only with more fieldwork.
  • If paleontologists argue about why bipedalism evolved, they're even more contentious over the organization of the human family tree.
  • It's one of those facts of life, like bipedalism, that set Homo sapiens apart from the nonhuman primates.

  • Chris Stringer in New Scientist (subscription)
    Since all the sites which have yielded fossil evidence of our earliest ancestors were forested or wooded, rather than open, Stringer says, "arboreal bipedalism is certainly a very plausible mechanism for the origins of walking upright."

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