What is it about?
This study reveals that farming and herding were introduced to the Nile Valley around 6000 BCE by migrating populations. By analyzing the internal structure of ancient teeth from 88 individuals, we found clear evidence of a major population shift between the region’s last hunter-gatherers and its first food-producers. While these new farming communities settled along the Nile, some hunter-gatherer groups persisted in nearby desert areas, interacting through natural routes like the Wadi Howar river.
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Photo by Martijn Vonk on Unsplash
Why is it important?
This study provides the first clear biological evidence of population migration associated with the ermergence of farming and herding in the Nile Valley—a topic that has been debated for more than 50 years. We also bring unprecedented data on the settlement processes of these new populations. Finally, these results show that tooth inner morphology can be a powerful tool for studying ancient populations when ancient DNA isn’t available.
Perspectives
It was really exciting to work on this paper with so many colleagues and specialists in the field. From a research perspective, it's also thrilling because this is the first time such fine-grained resolution has been achieved in a dental micro-evolutionary study. This will definitely open new doors for exploring human evolution and migration in regions where genetic material doesn’t preserve well!
Nicolas Martin
Universite de Bordeaux
Read the Original
This page is a summary of: Enamel–dentine junction morphology reveals population replacement and mobility in the late prehistoric Middle Nile Valley, Proceedings of the National Academy of Sciences, March 2025, Proceedings of the National Academy of Sciences,
DOI: 10.1073/pnas.2419122122.
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