Diplodocus : Children's Dinosaur Book With Intriguing Informative Facts (Paperback)

Another interesting fact about Diplodocus is that its tail was composed of double beamed bones. These chevron bones likely provided support for its vertebrae and blood vessels. It was also believed that Diplodocus used its tail as a weapon. The keratin spines in its tail were thought to help whip its tail. This may have been used to ward off predators and communicate.