Nine-year-old Matthew Berger found a hominin clavicle while exploring the Malapa cave site in South Africa's Cradle of Humankind, leading his father, paleoanthropologist Lee Berger, to excavate two partial skeletons. Uranium-lead dating constrained the fossils to 1.977 million years ago. Formally described in 2010 as Australopithecus sediba, meaning 'fountain' in Sesotho, the species displayed a mosaic of Australopithecus and early Homo traits in its pelvis, hands, and brain endocast.