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Lucy (AL 288-1) is the set of bone fragments belonging to the skeleton of a hominid of the Australopithecus afarensis species, from 3.2 to 3.5 million years old, 2 discovered by the team formed by the American Donald Johanson and the French Yves Coppens and Maurice Taieb on November 24, 1974, 159 km from Addis Ababa, Ethiopia.
It is about 40% of the skeleton of a female about 1.10 meters tall, about 27 kg in weight (when she was alive), about 20 years old (the wisdom teeth were just out) and who had some son. Equipped with a tiny skull, comparable to that of a chimpanzee, Lucy walked on her hind limbs, a formal sign of an evolution towards hominization. Lucy's bipedal ability can be deduced from the shape of her pelvis, as well as her knee joint.