Paranthropus

For many years, human evolution was commonly pictured as a fairly simple progression: one ancient form gradually becoming another until modern humans appeared. That picture was useful, but it was too simple. Today, the fossil record looks much more like a branching tree than a ladder. Different hominin species appeared, overlapped, disappeared, and sometimes lived in the same regions at roughly the same time. In some periods, several distinct human relatives may have been sharing Africa together. ...