scaphoid fossa

When present, it opens below near the scaphoid fossa.

Cruveilhier's fossa: scaphoid fossa of sphenoid bone.

Above this fossa is a small, oval, shallow depression, the scaphoid fossa, which gives origin to the tensor veli palatini.

The root and superior crus of the antihelix form the anterior wall of the scaphoid fossa, and the helix forms the posterior wall.

Case 2: Stahl's ear - A full-term male child presented Stahl's ear deformity characterized by a helical rim with a third crus (shank), a flat helix, and a malformed scaphoid fossa.

Medial to the foramen ovale is the foramen Vesalii, which varies in size in different individuals, and is often absent; when present, it opens below at the lateral side of the scaphoid fossa, and transmits a small vein.

The angular prominence between the posterior margin of the vaginal process and the medial border of the scaphoid fossa is named the pterygoid tubercle, and immediately above this is the posterior opening of the pterygoid canal.

It arises by a flat lamella from the scaphoid fossa at the base of the medial pterygoid plate, from the spina angularis of the sphenoid and from the lateral wall of the cartilage of the auditory tube.

The sphenoidal emissary foramen is occasionally present; it is a small aperture medial to the foramen ovale, opposite the root of the pterygoid process; it opens below near the scaphoid fossa, and transmits a small vein from the cavernous sinus.