Chile unveils 74‑million‑year‑old mammal fossil, reshaping mammal evolution
This illustration by Mauricio Alvarez depicts \’Yeutherium pressor,\’ a tiny mammal that lived in the time of the dinosaurs in what is now southern Chile – Copyright AFP Ahmad SAHEL ARMANScientists have discovered the fossil of a tiny mouse-sized mammal that lived in the time of the dinosaurs in Chile