Cenozoic Era

The Cenozoic Era is the current geological era and is also known as the "Age of Mammals." It began about 65 million years ago and is divided into three periods: the Paleogene, Neogene, and Quaternary periods.

Paleogene Period

The Paleogene period lasted from about 65 to 23 million years ago. It is further divided into the Paleocene, Eocene, and Oligocene epochs. During this period, mammals diversified and evolved rapidly, taking advantage of the ecological niches left vacant by the extinction of the dinosaurs.

Neogene Period

The Neogene period lasted from about 23 to 2.6 million years ago. It is further divided into the Miocene and Pliocene epochs. This period saw the continued diversification of mammals, as well as the emergence of early humans in the later stages.

Quaternary Period

The Quaternary period began about 2.6 million years ago and continues to the present day. It is divided into the Pleistocene and Holocene epochs. This period is marked by the expansion and diversification of humans, as well as the last Ice Age and the development of modern ecosystems.

Study Guide for the Cenozoic Era

1. What is the Cenozoic Era known as?
2. How long ago did the Cenozoic Era begin?
3. What are the three periods of the Cenozoic Era?
4. Describe the Paleogene period.
5. What are the epochs of the Paleogene period?
6. What significant events occurred during the Neogene period?
7. What are the epochs of the Neogene period?
8. What is the Quaternary period known for?
9. What are the epochs of the Quaternary period?