Cenozoic Era

The Cenozoic Era is the current and most recent of the three geologic eras, spanning from about 66 million years ago to the present day. It is also known as the "Age of Mammals" due to the diversification and dominance of mammals during this time period.

Divisions of the Cenozoic Era

• Paleogene Period: The first part of the Cenozoic Era, characterized by the diversification of mammals, birds, and flowering plants.
• Neogene Period: The second part of the Cenozoic Era, marked by the evolution of modern flora and fauna, including the appearance of early hominids.
• Quaternary Period: The most recent period, known for the appearance and development of humans, as well as the Ice Ages.

Key Events and Features of the Cenozoic Era

• Climate Change: The Cenozoic Era saw significant shifts in climate, including periods of cooling and warming, as well as the onset of the Ice Ages during the Quaternary Period.
• Biological Diversification: Mammals, birds, and flowering plants underwent rapid diversification and adaptation, leading to the modern biodiversity we see today.
• Geological Activity: The Cenozoic Era was marked by tectonic movements, volcanic eruptions, and the formation of major mountain ranges and basins.
• Human Evolution: The Quaternary Period witnessed the emergence and evolution of early humans, as well as the development of complex societies and civilizations.

Study Guide

To study the Cenozoic Era, it's important to focus on the following key points:

1. Identify the major divisions of the Cenozoic Era and the key characteristics of each period.
2. Understand the impact of climate change on the evolution of flora and fauna during the Cenozoic Era.
3. Examine the geological events and processes that shaped the Earth's surface during this time period.
4. Explore the timeline of human evolution and the development of early human societies during the Quaternary Period.

By mastering these concepts, you will gain a comprehensive understanding of the Cenozoic Era and its significance in the history of life on Earth.

[Cenozoic] Related Worksheets and Study Guides:

• Geologic timeScience • Eighth Grade