Major radiation of mammals, birds and pollinating insects took place in which epoch ?

Options

A. (a) Eocene
B. (b) Pliocene
C. (c) Miocene
D. (d) Palaeocene

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the epoch during which there was a major radiation of mammals, birds, and pollinating insects.

2. **Defining Radiation**: Radiation refers to the evolutionary process where organisms diversify rapidly from an ancestral species into a wide variety of forms to adapt to different environments.

3. **Identifying Relevant Epochs**: We need to consider the geological epochs and their significance in the evolution of mammals, birds, and insects. The relevant epochs include the Paleocene and Eocene.

4. **Analyzing the Paleocene Epoch**: The Paleocene epoch followed the mass extinction event at the end of the Cretaceous period. This event led to the extinction of many large reptiles, allowing smaller mammals, birds, and insects to thrive.

5. **Evolutionary Developments in the Paleocene**:
- Mammals evolved into different forms such as monotremes, marsupials, and advanced placental mammals.
- Birds diversified into various types, including predatory birds like eagles and owls.
- Insects evolved into advanced pollinating insects, including honey bees.

6. **Conclusion**: Given the significant evolutionary developments of mammals, birds, and pollinating insects during this time, the correct answer is that the major radiation took place in the **Paleocene epoch**.

**Final Answer**: The major radiation of mammals, birds, and pollinating insects took place in the **Paleocene epoch**.

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