Sentences with phrase «human and chimpanzee skeletons»

Not exact matches

Discovered by Donald Johanson at Hadar in Ethiopia in 1974 and nicknamed «Lucy» this fossil was the most complete skeleton and oldest member of what was then known of the human lineage but numerous scientists disputed she was truly bipedal, stating this species practiced a form of locomotion intermediate between the quadrupedal tree climbing of chimpanzees and human terrestrial bipedality.