New Information on the Cranial Anatomy of Acrocanthosaurus atokensis and Its Implications for the Phylogeny of Allosauroidea (Dinosauria: Theropoda)
Figure 48
Illustration of character 83 (Appendix S1).
Left epipterygoids of (A) Allosaurus fragilis (UUVP 1414) and (B) Acrocanthosaurus atokensis (NCSM 14345) in medial view. Both elements shown are complete. ls, laterosphenoid contact.