FIGURE 25 in A reappraisal of the cranial and mandibular osteology of the spinosaurid Irritator challengeri (Dinosauria: Theropoda)

FIGURE 25. Close-up photographs of right lateral braincase of Irritator challengeri (SMNS 58022). A, right lateral view; B, magnified anterior tympanic recess. Note that bones are labelled in bold, and other anatomical structures in regular font. Abbreviations: atyr, anterior tympanic recess; car, external foramen for the internal carotid artery (=vidian) canal; cif, crista interfenestralis; crtu, crista tuberalis; d, damage; fov, fenestra ovalis; mcv, mid cerebral vein foramen; opr, ophthalmic ridge defining groove for ophthalmic branch (CN V1); pd, (blind) pneumatic depression; sg, stapedial groove; vf, (lateral) vagal foramen;?sha, potential sphenoidal artery opening; II, medially open foramen for optic nerve (CN II); III, oculomotor nerve (CN III) foramen; V, trigeminal nerve (CN V) foramen; V1gr, ophthalmic groove for V1 branch; VII, facial nerve (CN VII) foramen.