What it is
Screening more than 60,000 bone fragments from Bianfu Cave in Southwest China, the authors selected 76 for zooarchaeology by mass spectrometry and 17 for proteomic sequencing. This identified three hominin fossils (two parietal fragments and one proximal radial fragment) from layers dated to roughly 167 to 134 thousand years ago, and proteomic analysis confirmed these, together with two hominin teeth from the excavation, as Denisovan. The find establishes Bianfu Cave as the most abundant source of Denisovan remains outside Denisova Cave in Siberia and adds direct information on Denisovan radial morphology.
Why it matters
Denisovan biology has been reconstructed mostly from cranial, facial, and dental pieces, with a conspicuous gap in Southwest China and almost no diagnostic long bones. Identifying three hominin fossils, including a proximal radius, plus two teeth as Denisovan fills that geographic gap and supplies direct evidence of postcranial morphology that was previously missing. It also establishes a productive new Denisovan locality beyond the Siberian type site.
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Filed underPleistocene-Era Hominins and Archaeology, Primate Behavior and Ecology, Evolution and Paleontology Studies