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Paleocene Epoch Web PagesEdit
- Paleogene Period (66-23 MYA) - Earliest part of the Cenozoic.
- Oligocene Epoch (33.9-23 MYA) -
- Eocene Epoch (56-33.9 MYA) - Second part of the Paleogene. Began with period of global warming followed by an extinction event, followed by the "dawn" of many orders of mammals. These mammals entered North America from Europe over a land bridge. Creation of south polar current caused global cooling and led to the Oligocene extinction.
- Paleocene Epoch (66-56 MYA) - First part of Paleogene after demise of dinosaurs. Saw an explosion of diversity of mammals, though not many of the today's types of mammals are represented in this epoch.
- Selandian Age (59.2–61.6 MYA) - An age.
- Thanetian Age (56.0–59.2 MYA) - An age.
- Danian Age (61.6–66.0 MYA) - The age immediately following the extinction of the dinosaurs. The first placental mammal fossils are found from this period.
- Cretaceouse-Tertiary Extinction Event (66 MYA) - More formally known as the Cretaceous-Paleogene extinction event. The mass extinction that led to the extinction of the dinosaurs.