New Information on the Cranial Anatomy of Acrocanthosaurus atokensis and Its Implications for the Phylogeny of Allosauroidea (Dinosauria: Theropoda)
Figure 26
Left epipterygoid of Acrocanthosaurus atokensis (NCSM 14345).
Epipterygoid in (A) lateral and (B) medial views. ls, laterosphenoid contact; pt, pterygoid contact.