Postcranial skeleton The neural spines of Pteranodon's vertebrae were narrow.Bennett, S. C. (1987). "New evidence on the tail of the pterosaur Pteranodon (Archosauria: Pterosauria)." Pp. 18–23 in Currie, P. J. and E. H. Koster (eds.), Fourth Symposium on Mesozoic Terrestrial Ecosystems, Short Papers. Occasional Papers of the Tyrrell Museum of Paleontology, #3. Like many pterosaurs and birds, it possessed a notarium, a fused mass comprising the first six dorsal vertebrae. Similarly, the first few ribs were fused. The pelvic bones were fused to the synsacrum, a mass of vertebrae that included at least two dorsal vertebrae, the sacral vertebrae, and the first caudal vertebra. The sacrals were strengthened by bony ligaments. Beyond the synsacrum, the tail was relatively short, and the last few vertebrae were fused into a bony rod. The entire length of the tail was about 3.5% as long as the wingspan, or up to in the largest males.
Postcranial skeleton The neural spines of Pteranodon's vertebrae were narrow.Bennett, S. C. (1987). "New evidence on the tail of the pterosaur Pteranodon (Archosauria Pterosauria)." Pp. 18–23 in Currie, P. J. and E. H. Koster (eds.), Fourth Symposium on Mesozoic Terrestrial Ecosystems, Short Papers. Occasional Papers of the Tyrrell Museum of Paleontology, #3. Like many pterosaurs and birds, it possessed a notarium, a fused mass comprising the first six dorsal vertebrae. Similarly, the first few ribs were fused. The pelvic bones were fused to the synsacrum, a mass of vertebrae that included at least two dorsal vertebrae, the sacral vertebrae, and the first caudal vertebra. The sacrals were strengthened by bony ligaments. Beyond the synsacrum, the tail was relatively short, and the last few vertebrae were fused into a bony rod. The entire length of the tail was about 3.5% as long as the wingspan, or up to in the largest males.