Photo Gallery: A New Human Family Tree? 03/24/2010
  The view from the Denisova Cave, Altai Mountains, in southern Siberia. Finger...
MPI für evolutionäre Anthropologie / JOHANNES KRAUSE

The view from the Denisova Cave, Altai Mountains, in southern Siberia. Finger bones dating from 30,000 years ago were found here -- and are being investigated by German scientists who think they may have identified a new human species.