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Related Experiment Videos

Origin of bipedalism.

J H Prost

    American Journal of Physical Anthropology
    |February 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Human bipedalism likely evolved from a specific type of chimpanzee quadrupedal climbing, not ape bipedalism. Early hominins, like australopithecines, were adapted for this arboreal climbing with facultative terrestrial bipedalism.

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    Area of Science:

    • Paleoanthropology
    • Biomechanics
    • Evolutionary Biology

    Background:

    • Locomotion patterns in humans and chimpanzees differ significantly, particularly in bipedalism.
    • Previous theories on the evolution of human bipedalism have been challenged by these kinematic differences.

    Purpose of the Study:

    • To compare human and chimpanzee locomotor behaviors using joint motion data.
    • To investigate the evolutionary precursor of human bipedalism.

    Main Methods:

    • Analysis of field patterns derived from joint motion measurements in humans and chimpanzees.
    • Comparative analysis of bipedal and quadrupedal locomotion.

    Main Results:

    • Human and chimpanzee bipedalism exhibit distinct kinematic patterns, suggesting non-human bipedalism was not a direct precursor.

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  • Chimpanzee quadrupedal vertical climbing shares similarities with human bipedalism.
  • Australopithecines possessed traits suited for arboreal quadrupedal vertical climbing and facultative terrestrial bipedalism.

    • Conclusions:

    • Human bipedalism likely evolved from a specialized form of arboreal quadrupedal vertical climbing.
    • Morphological adaptations in australopithecines support their role as transitional forms between arboreal climbing and terrestrial bipedalism.