24.05.2017 - 23:22
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News

March 14, 2017: A newly discovered fossil human cranium from Portugal dated to be 400,000 years old
© Elena Santos

U-series (U-Th) dating of associated calcite formations constrains the age of the Middle Pleistocene cranium between 390,000 and 436,000 years.

An international team recently discovered a fossil human cranium in Portugal. The cranium was excavated in Gruta da Aroeira which is part of the Almonda cave system (Torres Novas, Portugal). The cranium was found in sediments which accumulated on top of a stalagmite column and calcite crusts also formed on the cranium after its burial. U-series dating of the calcite formations was done by Dirk Hoffmann from the Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology. The results provided maximum and minimum ages for the cranium and revealed an age between 390,000 and 436,000 years. The Aroeira specimen is the westernmost Middle Pleistocene cranium found in Europe and one of the best dated Middle Pleistocene specimen. It might help elucidate hominin evolution in Europe during the Middle Pleistocene, including the origin of the Neandertals. The study, led by J. Daura from the University of Lisbon, included researchers from Portugal, Spain, Germany and the US.

Link to press release (University of Lisbon)

Original publication