Final answer:
The vertebrae are classified as irregular bones, which are bones with complex shapes. Examples of irregular bones include the vertebrae, hip bones, and several skull bones.
Step-by-step explanation:
The vertebrae are classified as irregular bones. Irregular bones are bones with complex shapes, and they may have various surface features such as short, flat, notched, or ridged surfaces. Examples of irregular bones include the vertebrae, hip bones, and several skull bones.