Building the Hominid Models Anatomical indications which support the concept of evolution can be seen in hominid fossils from the Sterkfontein Caves and other sites in the Cradle of Humankind. A model of an Australopithecus being made The australopithecines were apelike, but were different from the other great apes of the past because they were habitually bipedal, meaning they regularly walked upright. (Other great apes walk upright only in short stints.) A reconstruction of the species Australopithecus africanus. A cast of Paranthropus robustus. The first Paranthropus robustus was discovered by Dr Robert Broom in 1938 at Kromdraai in the Cradle of Humankind.