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Scientists find 74-million-year-old mammal fossil in Chile

Illustration, created by Mauricio Alvarez and obtained from Universidad de Chile on August 11, 2025, depicts the "Yeutherium pressor," an animal that lived during the Late Cretaceous period, approximately 74 million years ago.[AFP]

Scientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chilean Patagonia.

"Yeutherium pressor" weighed between 30 and 40 grams (about one ounce) and lived in the Upper Cretaceous period, about 74 million years ago.

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