When the dinosaurs died, the Age of Mammals began. Step back in time to a world of extraordinary creatures-some familiar, some astonishing-in the beautifully il
From woolly mammoths to saber-toothed cats, prehistoric mammals once roamed Earth. With beautiful and engaging illustrations, authentic photos, and accessible t
From woolly mammoths to saber-toothed cats, prehistoric mammals once roamed Earth. With beautiful and engaging illustrations, authentic photos, and accessible t