What it contains is the genome of a girl who lived approximately 90,000 years ago in the Altai Mountains of Siberia.

Her mother was a Neanderthal.

Her father was a Denisovan.

She was, in the literal biological sense of the term, the offspring of two different human species — a first-generation hybrid whose existence proved, beyond any remaining scientific doubt, that Neanderthals and Denisovans could and did produce children together.

She was perhaps ten to fifteen years old when she died.

She left no other trace in the archaeological record — no tools she made, no marks on cave walls, no other bones that have been identified as hers.

Just this fragment.