Coenozoic era is known as

Options

A. Age of Amphibia and lycopods
B. Age of Marine and gymnosperms
C. Age of reptile sand gymnosperms
D. Age of Mammals and Modern flora.

Answer

### Step-by-Step Solution:

1. **Identify the Cenozoic Era**: The Cenozoic era is the most recent geological era in the history of Earth, beginning around 66 million years ago and continuing to the present day.

2. **Understand the Significance**: The Cenozoic era is often referred to as the "Age of Mammals" because it is during this time that mammals became the dominant terrestrial vertebrates.

3. **Modern Flora**: This era is also known for the rise of modern flora, particularly angiosperms (flowering plants). Among angiosperms, monocots are considered the most recent group.

4. **Division of the Cenozoic Era**: The Cenozoic era is divided into two main periods: the Tertiary and the Quaternary.

5. **Further Breakdown of Tertiary**: The Tertiary period is further divided into two epochs: the Paleogene and the Neogene.
- **Paleogene Epochs**: This includes the Paleocene, Eocene, and Oligocene epochs.
- **Neogene Epochs**: This includes the Miocene and Pliocene epochs.

6. **Quaternary Period**: Following the Tertiary, the Quaternary period is divided into two epochs: the Pleistocene and the Holocene, with the Holocene being the most recent epoch.

7. **Conclusion**: Therefore, the Cenozoic era is known as the "Age of Mammals" and the "Age of Modern Flora."

### Final Answer:
The Cenozoic era is known as the "Age of Mammals" and the "Age of Modern Flora."

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