Devonian Period

The Devonian Period was a time in the geological history of Earth that spanned 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 existed during this time.

Key Events and Characteristics of the Devonian Period:

• Plant Evolution: The Devonian Period saw the evolution of the first forests as plants began to spread and grow taller, leading to the development of complex ecosystems on land.
• Animal Diversity: In addition to the proliferation of fish species, the Devonian Period also witnessed the emergence and diversification of early tetrapods, which were the ancestors of modern amphibians, reptiles, birds, and mammals.
• Mass Extinction: The latter part of the Devonian Period was marked by a significant mass extinction event, particularly affecting marine life, including many coral and brachiopod species.
• Geological Formations: The Devonian Period is associated with the formation of various geological features, such as the Old Red Sandstone in Europe and North America, and the widespread deposition of marine limestone.

Study Guide for the Devonian Period:

1. What major evolutionary event occurred during the Devonian Period?
2. Describe the significance of the "Age of Fishes" in the Devonian Period.
3. How did the development of forests and plant life impact ecosystems during this time?
4. Explain the importance of the mass extinction event that occurred towards the end of the Devonian Period.
5. Discuss the geological formations associated with the Devonian Period and their significance.

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

[Devonian] Related Worksheets and Study Guides:

• Geologic timeScience • Eighth Grade