AdvertisementAncient Bone's DNA Suggests New Human AncestorsDecember 23, 2010Joe PalcafacebookEmailThis tooth, which was also found in Denisova Cave, has a DNA structure similar to that of a finger bone. Its shape and physical structure are, however, very different from that of Neanderthals and modern humans, leading researchers to believe that the Denisovans are a distinct group. (Nature)