Paleogene
66 Ma – 23.03 Ma · part of the Cenozoic era
In the aftermath of the dinosaurs, mammals and birds diversified rapidly through the Paleogene. The climate was warm early on, then cooled toward the period’s end.
View the Paleogene on the globe →
Highlights
- Rapid mammal and bird radiation
- Warm early-Cenozoic climate
- Gradual cooling and the first ice sheets