Devonian Period

The Devonian Period is a geologic period that lasted from approximately 419.2 million years ago to 358.9 million years ago. It is often referred to as the "Age of Fishes" due to the diverse and abundant fish species that emerged during this time.

Key Events and Characteristics

• 1. Evolution of Plants: The Devonian Period saw the rapid diversification and spread of plants, including the first trees and forests.
• 2. Marine Life: The oceans were inhabited by a wide variety of marine organisms, including early fish, ammonoids, and brachiopods.
• 3. Mass Extinction: Towards the end of the Devonian Period, a significant mass extinction event occurred, impacting marine and terrestrial life.
• 4. Continental Drift: The supercontinent of Gondwana began to break apart during this period, leading to the formation of new continents.

Study Guide

1. What is the Devonian Period known as due to the abundant fish species that emerged during this time?
   Answer: The "Age of Fishes"
2. Which significant event occurred towards the end of the Devonian Period, impacting marine and terrestrial life?
   Answer: A mass extinction event
3. What was the impact of the Devonian Period on plant life?
   Answer: Rapid diversification and spread of plants, including the first trees and forests
4. What geological process began during the Devonian Period, leading to the formation of new continents?
   Answer: Continental drift, with the breakup of the supercontinent Gondwana

Studying the Devonian Period provides insights into the evolution of life on Earth and the geological processes that shaped our planet during this time.

[Devonian] Related Worksheets and Study Guides:

• Geologic timeScience • Eighth Grade