The Paleogene Period marked the dawn of the Cenozoic Era, beginning after the Cretaceous extinction event. During this time, Earth's climate shifted, and diverse mammal life began to flourish across evolving continents.
The Paleogene Period marked the dawn of the Cenozoic Era, beginning after the Cretaceous extinction event. During this time, Earth's climate shifted, and diverse mammal life began to flourish across evolving continents.