Amphibia first appeared in which of the following period?

Options

A. Pernian
B. Carboniferous period-Age of amphibians
C. Devonian
D. Silurian

Answer

To determine when Amphibia first appeared, we need to analyze the geological periods mentioned in the question: Permian, Carboniferous, Devonian, and Silurian.

**Step 1: Understand the Geological Periods**
- The geological time scale is divided into several periods, each characterized by significant events in the history of life on Earth.

**Step 2: Identify the Periods in Question**
- **Permian Period**: This period occurred after the Carboniferous and is known for the diversification of reptiles.
- **Carboniferous Period**: This period is known for the development of extensive coal-forming forests and the first amniotes.
- **Devonian Period**: Known as the "Age of Fishes," this period saw the first appearance of many fish species and later the emergence of amphibians.
- **Silurian Period**: This period is characterized by the first vascular plants and early fish.

**Step 3: Focus on the Devonian Period**
- The Devonian period, which began around 419 million years ago and ended about 359 million years ago, is significant for the evolution of early amphibians. By the end of this period, the first four-legged vertebrates (amphibians) emerged from fish ancestors.

**Step 4: Conclusion**
- Based on the information, the first appearance of Amphibia is attributed to the Devonian period. Therefore, the correct answer is **Devonian**.

### Final Answer:
Amphibia first appeared in the **Devonian period**.