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55-million-year-old fossil teeth rewrite the story of early primate evolution

A newly identified primate species from Wyoming is challenging a long-standing model of early primate evolution. The species, Tetonius varleyorum, lived about 55 million years ago and combines primitive and advanced dental traits that do not fit the previously proposed straight-line evolutionary sequence. The fossils suggest early primate evolution involved branching lineages rather than simple, gradual transformation. Researchers say the new sp…
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Brighter Side News broke the news on Tuesday, August 11, 2026.
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