National Geographic : 2006 Nov
,) Lucy, female The Dikika baby (far left) joins two specimens found earlier, a male, AL 444-2 (larger skeleton), and a female dubbed Lucy, to create a portrait of the species Australopithecus afarensis. With much of her skeleton recovered, the Dikika baby is the most complete specimen this ancient and offers new clues about how this human ancestor blurred the line between ape and human. For example, the shape of her shoulders resembles a young gorilla's, suggesting she could climb trees. But the angle of her femur from knee to hip is close to that of a modern human, implying she walked efficiently on two legs. Some details of her skeleton are speculative, because not all the bones have been removed from surrounding rock. Recovered fossils (dark areas) Hypothetical skeleton (light areas) 0.5 feet ORIGIN OF CHILDHOOD 151 F?