New Information on the Cranial Anatomy of Acrocanthosaurus atokensis and Its Implications for the Phylogeny of Allosauroidea (Dinosauria: Theropoda)
Figure 34
Illustration of character 12 (Appendix S1).
Right maxilla of (A) Allosaurus fragilis (UUVP 5499) in posteromedial view and (B) Acrocanthosaurus atokensis (NCSM 14345) in posterior view. ascr, ascending ramus of the maxilla; pfam, posterior maxillary fenestra; ifs, interfenestral strut; pas, postantral strut.