Kenyanthropus platyops is probably a rival source of development of the emerging human species alongside Lucy, the Australopithecus afarensis. This dated to 3.5 million years ago. It again suggests many species at once (as later on) at this stage of development and in a close area. This has a much flatter face and smaller teeth than Australopithecus afarensis. It is upright walking and used its hands.