According to research on three limb bones, the oldest known progenitor of modern humans climbed through trees and walked on two feet roughly seven million years ago.
Bipedal Sahelanthropus tchadensis
Bipedal Sahelanthropus tchadensis
Bipedal Sahelanthropus tchadensis
According to research on three limb bones, the oldest known progenitor of modern humans climbed through trees and walked on two feet roughly seven million years ago.