What is the characteristic appearance of the neural spines projecting from the vertebrae?

Answer

Double-rowed, projecting backward

The spines are described as being double-rowed, projecting upward and slightly backward, creating a distinctive, almost feathered or pronged appearance along the dorsal line.

What is the characteristic appearance of the neural spines projecting from the vertebrae?
fossildinosaurspinesauropodAmargasaurus