These projections are small ribs that have become fused on to the side of the vertebra.
There are compression fractures of the ninth thoracic through second lumbar vertebrae.
Further discovery of more complete material, especially skull and vertebrae, could lead to a revision of this tentative interpretation.
Although there are no preserved vertebrae, it is probable that the first pterygiophore inserted anterior to the first neural spine.
The spines at the rear of the cervical vertebrae are quite short.
At the level of the sixth thoracic vertebra, a large artery supplied the left lingula and lower lobe pulmonary arteries.
Six fused vertebrae are present, and the first would originally have borne a free rib.
Films were slightly better although visualising vertebrae was still difficult.
