Human Ancestor Ethiopian ‘Lucy’ Walked Upright 3.2 Million Years Ago

By LiveScience Staff :

The discovery of a new hominid skeleton in Ethiopia shows that the human ancestor represented by the famed “Lucy” walked on two legs rather than moving like a knuckle dragger, researchers say.

Anthropologists have long debated whether the short-statured female Lucy typically walked upright or not. She had represented the only known skeleton ofAustralopithecus afarensis, and would have stood at a height of 3.5 feet (about a meter) some 3.2 million years ago. Read the rest of this entry »