Original: The Homo genus (humans, appear about 2.4 million years ago with Homo habilis) appear to be descended from australopithecine ancestors, more precisely from Kenyanthropus platyops branching off Australopithecus some 3.5 million years ago.
Simplified: The genus Homo (humans), appears about 2.4 million years ago with Homo habilis. They may be descended from australopithecine ancestors, more precisely from Kenyanthropus platyops branching off Australopithecus some 3.5 million years ago.