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Oldest Known Human Fossil in Western Europe Unveils New Species

Archaeologists identify a 1.1 to 1.4 million-year-old partial face fossil in Spain, introducing Homo affinis erectus to the evolutionary timeline.

Archaelogists work on excavation at level TE7 of the Sima del Elefante site at Sierra de Atapuerca, near Burgos, Spain, in this undated handout image released on March 12, 2025. Maria D. Guillen/IPHES-CERCA/Handout via REUTERS
The fossil of the left midface of a hominin assigned to Homo affinis erectus, that was recovered at level TE7 of the Sima del Elefante archaeological site at Spain's Sierra de Atapuerca, is dispalyed at an undisclosed location, in this undated handout image released on March 12, 2025. Maria D. Guillen/IPHES-CERCA/Handout via REUTERS
A handout image shows the fossil of the left midface of a hominin assigned to Homo affinis erectus, that was recovered at level TE7 of the Sima del Elefante archaeological site at Spain's Sierra de Atapuerca, alongside the representation of the right side of the midface, which is mirrored by means of virtual 3D imaging techniques, in this undated handout image released on March 12, 2025. Maria D. Guillen/IPHES-CERCA/Handout via REUTERS
IPHES-CERCA researcher Rosa Huguet, a professor at Rovira I Virgili University, looks at the fossil of the left midface of a hominin assigned to Homo affinis erectus, that was recovered at level TE7 of the Sima del Elefante archaeological site at Spain's Sierra de Atapuerca, at an undisclosed location, in this undated handout image released on March 12, 2025. Maria D. Guillen/IPHES-CERCA/Handout via REUTERS

Overview

  • The fossil, found in 2022 at the Sima del Elefante site in northern Spain, includes parts of the cheekbone and upper jaw and is the oldest human fossil discovered in Western Europe.
  • Researchers provisionally classified the fossil as Homo affinis erectus, a previously unknown species related to Homo erectus but with more primitive facial features.
  • This discovery challenges previous assumptions that Homo antecessor was the first hominin to inhabit Western Europe, suggesting multiple human species coexisted during the Early Pleistocene.
  • The site yielded 6,000 additional fossil remains, including animal bones with cut marks and simple stone tools, indicating early humans’ adaptation to their environment and subsistence strategies.
  • Further excavation and study are planned to clarify the species' identity, its relationship to other hominins, and its role in the evolutionary history of the genus Homo.