Figure 1: (a) Endocranial aspect of skull base; maximum length (L), maximum width of anteromedial (AMW) and posterolateral (PLW*) parts of JF, distance of posterior margin of JF from intrajugular process of temporal bone (PMF-PIJ [T]), distance of posterior margin of JF from intrajugular process of occipital bone (PMF-PIJ [O]), width of sigmoid sinus groove (SSG). (b) Exocranial aspect of skull base. X: Maximum length (AP*), Y: Maximum width (MW), Z: Maximum depth of jugular fossa (DEPTH JF), B: Maximum width of jugular fossa (WJF*), A: Distance of stylomastoid foramen from lateral margin of jugular foramen. (*significant parameters)