Archaeopteryx, toothed fossil bird, occurred during

Options

A. Jurassic
B. Triassic
C. Cretaceous
D. Permian

Answer

**Step-by-Step Text Solution:**

1. **Identify the Subject**: The question is about the Archaeopteryx, a toothed fossil bird.

2. **Determine the Geological Time Frame**: The options provided are:
- a) Jurassic period
- b) Triassic
- c) Cretaceous
- d) Parmenion

3. **Research the Archaeopteryx**: Archaeopteryx is known to have existed approximately 150 million years ago, specifically during the late Jurassic period.

4. **Understand its Significance**: Archaeopteryx is considered a transitional fossil, serving as an important link between reptiles (specifically dinosaurs) and modern birds (avian species).

5. **Locate the Discovery**: The first Archaeopteryx fossils were discovered in Germany in 1860, which further supports its classification within the Jurassic period.

6. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is:
- **a) Jurassic period**.