Cave fossils in China reveal lives of mysterious human relatives, tell me about this news in (https://www.cnn.com/2026/09/09/science/china-denisovan-fossil-discovery)
09-09-2026
This news covers a major paleoanthropological discovery regarding Denisovansthe mysterious extinct human relatives:Key details of the discovery:
- Location and Findings: Excavations at Bianfu Cave in Yunnan Province, southwestern China, revealed rare skeletal remains, including two skull fragments, four teeth, and the first-known Denisovan forearm bone (radius). Alongside these fossils, archaeologists unearthed more than 1,360 stone tools and tens of thousands of mammal bone fragments.
- Identification Method: Because ancient DNA was not preserved, researchers identified the fossils as Denisovan by analyzing bone collagen proteins (palaeoproteomics), which carry distinctive amino acid variations across ancient human species.
- Physical Adaptations: The discovered radius bone indicates that the Denisovan biceps muscle attachment point was set farther back than in modern humans. This anatomical feature suggests they possessed greater leverage and rotational forearm strength for twisting movements.
- Daily Life and Tool Use: The assemblage links Denisovan physical remains directly to their tool culture for the first time in this region. The stone toolsincluding scrapers, choppers, and hammerstonesreflect an adaptable, opportunistic approach to manufacturing rather than heavily standardized styles.
- Timeline: The fossils date to between 167,000 and 134,000 years ago, while tool layers suggest the cave was occupied intermittently between 190,000 and 70,000 years ago.