Natural History of Bipedalism

Facultative bipeds:

  • A. ramidus (5.8 mya)

  • A. anamensis (4.2 mya)

  • A. habilis (2.5 mya)

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Slide 82 of 109

Early facultative bipeds include A. ramidus (5.8 mya) A. anamensis (4.2 mya) and A. habilis (2.5 mya).


Facultative biped
A creature that has the ability to walk on two legs, but is not required to do so. Such creatures often walked as quadrapeds or spent extensive time in trees.
Last Modified June 21, 2006


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