Australopithecus afarensis
Several species, including "Australopithecus garhi", "Australopithecus sediba", "Australopithecus africanus", and "Australopithecus afarensis", have been proposed as the ancestor or sister of the "Homo" lineage. These species have morphological features that align them with "Homo", but there is no consensus as to which gave rise to "Homo".