The lateral surface of the greater wing of the sphenoid is convex, and divided by a transverse ridge, the infratemporal crest, into two portions.

Infratemporal crest
Sphenoid bone. Anterior and inferior surfaces. (Infratemporal crest labeled at center left.)
Details
Identifiers
Latin	crista infratemporalis
TA98	A02.1.05.028
TA2	614
FMA	75045 54793, 75045
Anatomical terms of bone [edit on Wikidata]

The superior or temporal portion, convex from above downward, concave from before backward, forms a part of the temporal fossa, and gives attachment to the Temporalis; the inferior or infratemporal, smaller in size and concave, enters into the formation of the infratemporal fossa, and, together with the infratemporal crest, affords attachment to the Pterygoideus externus.