Who Were the Denisovans?

Scientists are continuing to unravel the legacy of humans' most recently-discovered evolutionary kin.

By Richard Pallardy
Jan 17, 2022 12:00 PMSep 13, 2022 6:45 PM
Denisova cave opening
The entrance to Denisova cave in Siberia’s Altai Mountains. (Credit: Igor Boshin/Shutterstock)

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In 1980, a Buddhist monk journeyed to Baishiya Karst Cave to pray. Located at the foot of a cliff at the edge of the Tibetan Plateau in Gansu, China, the cave’s opening, punched into a vertical expanse of gray stone, is such a picture-perfect embodiment of a monastic site that it almost veers into parody. It looks remarkably like a single eye socket, peering out across the river basin below. The tableau practically begs for a grizzled sage perched at the entrance, pondering some profundity or other.

We don’t know what this anonymous monk was in search of when he plodded up the path to the cave. But he descended with something much more concrete than the usual spiritual insights obtained from such a pilgrimage.

At some point during his stay, the monk found a strange mandible — a single length of jawbone studded with a handful of enormous molars. This specimen was passed to the sixth Gungtang Lama — a “living Buddha” — who in turn gave it to researchers at Lanzhou University. The relic languished in storage for years. Little did its discoverer imagine that the jawbone was the first evidence of a new group of humans: the Denisovans. It would take nearly four decades for the import of the discovery to become clear. But the first hints of its true significance emerged in 2010, hundreds of miles away.

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