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Researchers in Ethiopia unearthed 2.6-million-year-old fossilized teeth, potentially belonging to an unknown early human relative (Australopithecus). Discovered at the Ledi-Geraru site, alongside similarly aged Homo teeth (possibly the oldest known), the findings suggest at least two hominin lineages coexisted in the region. The Australopithecus teeth differ from known species, although insufficient evidence exists to declare a new species. The Homo teeth may represent the oldest Homo species yet discovered. Further research into enamel chemistry aims to determine dietary habits and potential resource competition between these early hominins.

Prepared by Olivia Bennett and reviewed by editorial team.