21. The neural spines of the vertebrae are distinctively shaped like shark fins, being high and triangular. 22. However, Ralph Molnar observed that Harris had an additional vertebra figured with a curved neural spine . 23. The neural spines on the rear dorsal, sacral and front tail vertebrae are expanded in side view. 24. Both the Dicraeosauridae and the Diplodocidae are characterized by bifurcated neural spines of the cervical and dorsal vertebra. 25. The possession of amphiplatyan caudal centra with anteriorly facing neural spines is a unique identifier of this species. 26. However, the tops of the neural spines along the back bone are strikingly different in each genus. 27. The genera is characterized by the dimension and shape of the neural spine of the proximal caudal vertebrae. 28. It is likely that this undescribed leg bone belonged to the same individual animal as the neural spine . 29. The neural spines had ossified ( turned to bone ) tendons, which also overlapped some of the vertebrae. 30. These seem to be individually separated and are placed as extensions of each neural spine of the vertebral column.
