Both were capable of upright walking.

Further analysis of the skeleton might shed light on how upright walking developed, Dr. Koehler said.

These looks sometime upheld him; for I show'd My youthful eyes, and led him by their light In upright walking.

The bones of Australopithecus anamensis are the earliest unambiguous evidence for upright walking, or bipedalism, by a protohuman.

They say they have found evidence disputing the idea that upright walking was an evolutionary response to drastic climate change.

Durable as they had been, the fossil footprints, the earliest indisputable evidence of upright walking by human ancestors, are now endangered.

The lower body appeared to be adapted for upright walking by afarensis.

Moreover, there is a prominent fourth trochanter on the femur for the attachment of muscles that would have aided in upright walking.

This is the earliest direct evidence for upright walking by human ancestors.

They have already afforded a glimpse of hominids that were so apelike in nearly every respect as to accentuate their one humanlike trait: upright walking.