Updated

Updated · IFLScience · Sep 9

China Finds First Confirmed Denisovan Arm Bone in 167,000-Year-Old Bianfu Cave Remains

Updated

Updated · IFLScience · Sep 9

China Finds First Confirmed Denisovan Arm Bone in 167,000-Year-Old Bianfu Cave Remains

Q: How did scientists identify this mysterious ancient human species in a warm cave where DNA completely vanishes?

Scientists identified the fossils as Denisovan by using ancient protein analysis rather than DNA. In Bianfu Cave’s warm conditions, DNA had degraded away, so researchers extracted surviving collagen and other proteins from the bones and teeth and looked for Denisovan-specific amino-acid variants. That method, known as paleoproteomics, works because proteins can survive much longer than DNA in warm, wet environments. The team reported that the Bianfu samples carried collagen signatures seen in confirmed Denisovan remains and lacked markers typical of Homo sapiens or Neanderthals. Researchers also used micro-CT scans of the teeth to compare their internal shape with other hominin fossils, finding close similarities to Denisovan teeth from Tibet and Laos. Together, the molecular protein evidence and the tooth anatomy were strong enough to identify at least three individuals from the cave as Denisovans, even without recoverable DNA. The finds included four teeth, two skull fragments and the first known Denisovan forearm bone. The result is important beyond this single cave. Denisovans were originally discovered through DNA in cold Siberia, but many Asian sites are too warm for genetic material to survive. Bianfu shows that protein analysis can reveal Denisovans in places where DNA cannot, helping scientists connect this elusive human group not just to genes, but to bones, tools, hunting, and daily life.

3 articles · Updated · IFLScience · Sep 9

Researchers identified the first confirmed Denisovan radius—a forearm bone—among 22 potential hominin fragments recovered from more than 60,000 bones at Bianfu Cave in Yunnan.
Proteomic analysis found a Denisovan-linked amino acid variant in at least seven remains dated to 167,000-134,000 years ago, including the radius, two skull fragments and four teeth.
The cave sits far south of most known Denisovan fossils in Siberia and northern China, strengthening genetic hints that the group ranged closer to tropical Southeast Asia and Oceania.
A companion study tied more than 1,300 stone and bone artifacts from 190,000-70,000 years ago to Denisovan occupation, pointing to hunting technology and possible cultural exchange with Neanderthals.
Together, the Nature studies make Bianfu Cave the richest Denisovan fossil record known outside Siberia's Denisova Cave and offer a fuller picture of Denisovan life in forested East Asia.

Sources

IFLScience2h ago

First Denisovan Arm Bone Discovered in China's Bianfu Cave

National Geographic18h ago

Denisovan Bones and Stone Tools Discovered in China's Bianfu Cave

AOL2h ago

Archaeologists Just Found the Most Complete Denisovan Record Yet—and It Goes Back 190,000 Years - AOL

6 Sources

If Denisovans were robust and widespread, why were their surviving stone tools so surprisingly primitive?

How did scientists identify this mysterious ancient human species in a warm cave where DNA completely vanishes?

Bianfu Cave Reveals the Richest Denisovan Fossil and Tool Assemblage Beyond Siberia: New Insights into Ancient Human Adaptation

Overview

The 2026 discovery of Bianfu Cave in Yunnan, China, began with an ecological restoration project that led scientists to a treasure trove of Denisovan fossils and tools. Despite much of the cave being destroyed by quarrying and the warm, humid climate degrading ancient DNA, researchers used protein analysis and micro-CT scans to confirm the remains belonged to at least three Denisovans. These ancient humans relied on simple stone tools and abundant organic materials from their rich environment, showing formidable strength and cooperative hunting skills. However, when technologically advanced Homo sapiens arrived, Denisovans were eventually outcompeted and disappeared around 30,000 years ago.

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