Another means of gathering theoretical evidence is through bones. Examinations of early modem human skulls from Central Europe and Australia dated to between 20,000 and 30,000 years old have suggested that both groups apparently exhibit traits seen in their Middle Eastern and African predecessors. But the early mo specimens from Central Europe also display Neanderthal traits, and the early mo Australians showed affinities to archaic Homo from Indonesia. Meanwhile, debate among paleoanthropologists continues, as supporters of the two hypotheses challenge the evidence and conclusions of each other.