During the late middle Pleistocene—between 400 000 and 150 0000 years ago—the populations occupying Earth, and Africa specifically, looked very differently from what they do now. There is evidence for at least three forms of human relatives inhabiting Africa, including Homo heidelbergensis, Homo naledi and Homo sapiens (modern humans).
Click here for original story, Video: The muddle in the middle-Pleistocene
Source: Phys.org