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Chili : un minuscule mammifère “monotrème” du Crétacé découvert en Patagonie

This 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. It is estimated to have weighed between 30 and 40 grams. Scientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chilean Patagonia. Universidad de Chile / AFP

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