File:Autapomorphies of Xenoposeidon proneneukos.png

English: Autapomorphies of Xenoposeidon proneneukos NHMUK R2095, mid-posterior dorsal vertebra, highlighted in red. (A) Anterior view. (B) Left lateral view. Numbers pertain to the numbering of autapomorphies in the text. (1a), neural arch covers whole of centrum, and (1b) is contiguous with posterior articular facet. (2), neural arch is inclined forward by 35° relative to the vertical. (3a), inclined ridge-like lamina marks ventral margin of (3b) broad featureless area of bone. (4), large teardrop-shaped anterior fossa. (5a), vaulted laminae bound this fossa, but are not the medial CPRLs (5b, drawn in finer lines), which continue up to the presumed location of the prezygapophyses.