Reconstruction of right pterygoid, palatine, and vomer of Acrocanthosaurus atokensis (NCSM 14345) in lateral view.

Dashed lines represent hidden surfaces inferred by observing medial and ventral surfaces of shown elements. m, maxillary contact; j, jugal contact; PA, palatine; papr, palatine pneumatic recess; ptf, pterygopalatine fenestra; ppp, pterygoid process of palatine; V, vomer; vpar, vomeropalatine ramus of pterygoid.