To which fossil group does the famous fossil called "Lucy" belong?

The famous fossil known as "Lucy" belongs to the genus Australopithecus, specifically to the species Australopithecus afarensis. Discovered in 1974 in Ethiopia, Lucy is one of the oldest and most complete hominid skeletons ever found, dating back approximately 3.2 million years. This fossil has provided critical insights into the evolutionary history of bipedalism, illustrating a stage in human evolution where hominins were beginning to walk upright while still retaining some adaptations for climbing and tree-dwelling.

The significance of Lucy lies in her anatomical features, which show a mixture of human-like and ape-like characteristics, affirming her status as an early member of the hominin lineage. This has led to a better understanding of the transition from our primal ancestors to more modern human forms. Her discovery has been pivotal in demonstrating that bipedalism preceded the larger brain sizes associated with later hominins.