neural spine n.
The middle point of the vertebral arch, represented by the spinous process.
neural spine rather narrow at tip; superior margin straight.
neural spine expanded at free end, and superior margin rounded.
The neural spine arises only from the anterior half of the centrum, and is not fused to the carapace.
neural spine a low ridge, as long as the centrum, and extending beyond it posteriorly.
This is produced into a long backwardly-directed dorsal or neural spine.
neural spine much inclined backward; anterior edge concave, posterior convex, tip expanded.
The neural spine progressively increases in size as the vertebrae are followed back.