dental arcade. The molars and canines were extremely large - an unexpected feature if garhi is to be regarded as ancestral to Homo. The proportions of the limb bones are of interest: the femur-to-humerus ratio was like that of modern humans, but the ratio of forearm-to-humerus was like that of a chimpanzee. Australopithecus africanus Raymond Dart's " Taung child ", consisting of teeth, jaws, a complete set of facial bones, and an endocranial cast , was the first australopithecine fossil to be found. The fact that all its milk teeth are present, and the state of its cranial sutures , suggests that this individual was about 3 years old when it died. Although his description of the Taung infant as a hominid was originally questioned, the subsequent discovery of many adult africanus fossils confirmed his classification. As a species, africanus lived between 3.3 and 2 million years ago. Like afarensis , it showed strong sexual dimorphism, and bones of the feet, legs, pelvis and spine show that it was bipedal. However, both body size and cranial capacity (420 - 500cc) were slightly larger in africanus , which also had larger molar teeth, smaller canines, and a fully parabolic dental arcade. Australopithecus anamensis, afarensis , and africanus, and Kenyanthropus platyops are collectively known as gracile australopithecines, because of their relatively light, slender build. This is by comparison to the "robust" australopithecines: all the gracile species were still more robust than modern H. sapiens. Australopithecus robustus Together with A. aethiopicus and boisei