either of the broad curved wing like expanses on each side of the sphenoid bone in adults; may exist independently in the young [ MP:0003235 http://www.informatics.jax.org/accession/smb https://www.worldcat.org/search?q=bn%3A0-683-40008-8 ]

Synonyms: alisphenoid bone greater wing of sphenoidal bone ala major (os sphenoidale) greater wing of sphenoid

This is just here as a test because I lose it

Term information



depicted by


development notes

The mammalian alisphenoid forms the greater wing of the sphenoid bone, which contributes a small part of the skull vault just caudal to the orbit, and also underlies the basal part of the frontal and parietal bones in the fetus (Iseki et al. 1997)

has related synonym

greater wing of sphenoid bone

ala major ossis sphenoidalis


epipterygoid bone



taxon notes

The alisphenoid in mammals is part cartilage bone, part membrane bone[PMC1231738] In many mammals, e.g. the dog, the greater wing of the sphenoid bone stays through life a separate bone called the alisphenoid[WP].