According to Koenigswald (1973), Pithecanthropus is a kind of humankind (Homo sapiens) but they differ from human in term of the cranial morphology. Then, he called pithecanthropus as a primitive humankind.
Another primitive humankind is Australopithecus africanus (A.africanus). Their fossil’s remain firstly was found by Raymond Dart in 1925 in Africa.
In Southern Africa, we can find another kind of australopithecine namely A.robustus.