Hoofed animals like horse originated in `:`

Options

A. eocene
B. oligocene
C. miocene
D. pleistocene

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the epoch in which hoofed animals, like horses, originated. The options provided are Eocene, Oligocene, Miocene, and Pleistocene epochs.

2. **Reviewing the Epochs**:
- **Eocene Epoch**: This epoch is known for the emergence of many modern mammals, including hoofed animals. It is during this time that ancestors of horses and other hoofed animals became viable.
- **Oligocene Epoch**: This epoch saw the emergence of different organisms, such as eagles, hawks, and camels, but not specifically hoofed animals like horses.
- **Miocene Epoch**: This epoch is characterized by the emergence of animals such as bears, deer, and whales, but again, it does not focus on the origin of hoofed animals.
- **Pleistocene Epoch**: This epoch is known for the emergence of reptiles like crocodiles and snakes, which are not hoofed animals.

3. **Identifying the Correct Epoch**: Based on the information reviewed, the Eocene Epoch is the correct epoch where hoofed animals, including horses, originated.

4. **Final Answer**: Therefore, the answer to the question is that hoofed animals like horses originated in the **Eocene Epoch**.

---