Figure 7 in Avian brain evolution: new data from Palaeogene birds (Lower Eocene) from England

Figure 7. Virtual endocranial cast of Prophaethon shrubsolei. A, expanded view of the dorsal surface of the telencephalon, showing the shape and extent of the eminentia sagittalis. The eminentia sagittalis of this species is similar to living birds, but is not well developed dorsally. B, ventral view of virtual endocast. See text for list of anatomical abbreviations.