part of part of in lateral side of develops from develops from contributes to morphology of composed primarily of sphenoid bone bone tissue endochondral bone basicranium facial bone mesoderm-derived structure alisphenoid bone http://upload.wikimedia.org/wikipedia/commons/3/35/Gray145.png MA:0002772 greater wing of sphenoid bone 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) FMA:52868 ala major (os sphenoidale) greater wing of sphenoid Either of the broad curved wing like expanses on each side of the sphenoid bone in adults; may exist independently in the young. SCTID:361298007 alisphenoid bone greater wing of sphenoidal bone UBERON:0006721 epipterygoid ala major ossis sphenoidalis Wikipedia:Greater_wing_of_sphenoid_bone 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]. epipterygoid bone EMAPA:36567 splanchnocranium alisphenoid ossification center alisphenoid cartilage element neurocranium bone alisphenoid endochondral element lateral structure