New Australopithecus Species and Ancient Homo Teeth Discovered Side-by-Side in Ethiopia: Two Early Human Species Shared the Landscape 2.8 Million Years Ago!

In a groundbreaking study published June 2026 in Nature, researchers have identified two distinct hominin species living together in Ethiopia’s Afar region nearly 2.8 million years ago: a new species of Australopithecus and a primitive early Homo. The evidence comes from 47 isolated teeth recovered from the Woranso-Mille site, dated 2.78–2.82 million years ago through high-precision argon-argon dating and magnetostratigraphy.

The teeth fall into two clearly separate morphological groups with no intermediate forms. One cluster shows large molars with thick enamel and complex cusps typical of a new Australopithecus species, while the second group displays smaller, more parabolic dental arcs, reduced canines, and thinner enamel — diagnostic of early Homo. Isotopic analysis of the enamel further reveals dietary differences: the Australopithecus specialized in tougher vegetation, whereas the early Homo had a broader, more opportunistic diet.

Lead researcher Yohannes Haile-Selᴀssie states: “These teeth prove that Homo did not evolve directly from Australopithecus in a straight line. At least two distinct branches coexisted in the same landscape for hundreds of thousands of years.” The discovery obliterates the classic linear-progression model still taught in many textbooks and confirms that multiple hominin species thrived together during the critical transition period.

The find also pushes the origin of the genus Homo earlier than previously recognized and raises the possibility that stone-tool behaviors emerged independently or were shared among lineages. As more teeth and potential postcranial bones are prepared, Woranso-Mille promises to reveal how these two groups interacted, competed, or even interbred at the dawn of our genus.

The linear ladder of human evolution has been replaced by a branching bush — and Ethiopia’s ancient teeth have just pulled back the curtain.