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Digital Rebuild of 1‑Million‑Year‑Old Chinese Skull Points to Earlier Human Lineage Split

A Science paper argues Yunxian 2 belongs to a Denisovan‑linked Asian branch, prompting expert calls for ancient‑DNA tests.

Overview

  • Researchers dated the Yunxian 2 skull to roughly 940,000 to more than 1,000,000 years and contend it is not Homo erectus.
  • Using CT scans, structured‑light imaging and virtual reconstruction, the team restored the deformed fossil and compared it with more than 100 other human fossils.
  • The study, led by Xijun Ni with coauthor Chris Stringer, places the specimen in a distinct Asian lineage related to Denisovans and Homo longi.
  • The authors say this placement would push the split between the lineage leading to Homo sapiens and sister groups back by 300,000 to 400,000 years.
  • Independent experts, including Aylwyn Scally, welcome the analysis but urge caution because Yunxian 2 lacks ancient DNA and further evidence is needed to revise timelines.