ARTIFACT
he human face can sometimes betray a mosaic of emotions, as when competing expressions cross a person’s countenance, capturing a complicated moment. Paleoanthropologist Yohannes Haile-Selassie, a hominin who lived between 4.2 and 3.8 million years ago. Although more than 100 specimens of have been found in Ethiopia and Kenya, most are isolated teeth and jaw fragments. In fact, says Haile-Selassie, MRD is the most complete hominin cranium in the fossil record older than three million years ever discovered.
