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Shortly after the end-Cretaceous mass extinction, the earliest known primates, such as Purgatorius mckeeveri shown in the foreground, quickly set themselves apart from their competition -- like the archaic ungulate mammal on the forest floor -- by specializing in an omnivorous diet including fruit found up in the trees. Image credit: Andrey Atuchin.

Southernmost Fossils of Earliest Primate Relative Unearthed in Colorado

Mar 3, 2026 by News Staff

The newly-discovered minuscule fossils of Purgatorius — a shrew-sized mammal considered the earliest known relative of all primates, including humans,...

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