Reptilian hipped dinosaur belong to

Options

A. Saurischia
B. Lacertilia
C. Ophidia
D. Rhynocoephalia.

Answer

**Step-by-Step Solution:**

1. **Understanding the Classification of Dinosaurs**: Dinosaurs are classified based on the structure of their hips into two main groups: Saurischia and Ornithischia.

2. **Identifying the Hip Structures**:
- **Saurischia**: This group is characterized by a reptilian or lizard-like hip structure.
- **Ornithischia**: This group has a bird-like hip structure.

3. **Analyzing the Question**: The question specifically asks about "reptilian hipped dinosaurs".

4. **Selecting the Correct Group**: Since the reptiles are characterized by a lizard-like hip structure, the correct answer must be Saurischia.

5. **Reviewing Other Options**:
- **Laceratilia**: This group includes lizards, which are not dinosaurs.
- **Ophidia**: This group refers to snakes, which are also not dinosaurs.
- **Rhynchocephalia**: This group includes only one living representative, the Tuatara, which is not a dinosaur.

6. **Conclusion**: Since Saurischia is the only group that corresponds to the reptilian hip structure, the answer to the question is Saurischia.

**Final Answer**: Saurischia

---