Shortly after the discovery of Turkana Boy , Leakey and his team made the discovery of a skull ( known as ` Black Skull ' ) of a new species , Australopithecus aethiopicus ( or Paranthropus aethiopicus ) . Shortly after the discovery of Turkana Boy , Leakey and his team made the discovery of a skull ( KNM WT 17000 , known as â Black Skullâ ) of a new species , Australopithecus aethiopicus ( or Paranthropus aethiopicus ) .