1 — Spongy bone; Trabecular bone; 2 — Pterygoid fossa; 3 — Pterygoid canal; 4 — Anterior clinoid process; 5 — Lesser wing; 6 — Optic canal; 7 — Dorsum sellae; 8 — Posterior clinoid process; 9 — Greater wing, cerebral surface; 10 — Superior orbital fissure; 11 — Foramen rotundum; 12 — Scaphoid fossa; 13 — Pterygoid process, lateral plate; 14 — Pterygoid process, medial plate; 15 — Sella turcica; 16 — Foramen spinosum; 17 — Foramen ovale; 18 — Jugum sphenoidale; Sphenoidal yoke; 19 — Greater wing; 20 — Hypophysial fossa
