The pelvic bones of males and females may also be distinctive ... In Lucy's species, Australopithecus afarensis, the average adult male weighed near 110 pounds and stood around 4 feet 11 inches ...

Perhaps these individuals were a parent and child, or a large male and his diminutive ... when he discovered Lucy. Lucy's pelvic, hip, and leg bones offered more proof. As in a human, Lucy's ...