Fossils unearthed in South Africa turn out to be of an extinct human cousin that used to stand upright and was vulnerable to ...

Paranthropus robustus, often referred to as Australopithecus robustus, coexisted with early members of the genus Homo, including Homo ergaster, an early human ancestor. Unlike its Homo relatives ...

These are skull casts from human evolution. Left to right: Australopithecus afarensis, Homo habilis, Homo ergaster, Homo erectus and Homo neanderthalensis. Disclaimer: AAAS and EurekAlert!