English: Transverse plane CT visualization of the skull of Akainacephalus johnsoni revealing important anatomical features, otherwise obscured by bone and/or matrix. Anatomical features in skull of A. johnsoni with horizontal lines indicating localities for the CT slices; (A), oblong-shaped olfactory lobes and outline of the endocranial cavity which provides space for the brain, including its olfactory lobes; (B), and (C), ocular cavities and their surrounding pre- and postocular walls. Presence of cranial nerves CN V, ?VII, IX, X, XI and the fenestra ovalis (FO) along the lateral surfaces of the endocranial cavity; (D), anatomical outline of a small portion of the complex nasal air passage system showing the rostral loop of the nasal vestibule; (E) outlines of the olfactory chambers which house the olfactory lobes. Images not to scale.