The body of the sphenoid bone, more or less cubical in shape, is hollowed out in its interior to form two large cavities, the sphenoidal air sinuses, which are separated from each other by a septum.
bone of jaw +
bony otic capsule
bony vertebral centrum +
ceratobranchial bone +
ceratobranchial I
ceratohyal bone
claustrum bone
coracoid bone +
corpus +
craniopharyngeal canal
dermethmoid
dermosphenotic
dorsal hypohyal bone
dorsal-fin stay
endochondral bone tissue +
endochondral scleral ossicle +
entotympanic bone +
epibranchial bone +
epiotic +
ethmoid bone +
ethmoid bone primordium +
ethmoid cartilage +
ethomosphenoid region
exoccipital bone +
exoccipital posteroventral region
facial bone primordium
foramen rotundum
foramen spinosum of sphenoid bone
gonial bone
hemal postzygapophysis
hemal prezygapophysis
hemal spine +
hyomandibular bone
hypobranchial bone +
hypobranchial I
hypobranchial II
hypohyal bone
hypural plate
ilium +
incus bone +
inferior nasal concha +
infraorbital +
interarcual bone
intercalar
interfrontal bone
interhaemal bone
interhyal bone
intermuscular bone +
internal surface of cranial base
interparietal bone
intramembranous scleral ossicle +
ischium +
jugal bone +
kinethmoid bone
lacrimal bone
lateral ethmoid bone +
lateropterygium
limb bone +
malleus bone +
manubrium
mentomeckelian
mesethmoid bone +
mesocoracoid bone
metapterygoid
middle nuchal plate
nasal bone +
nasal concha of ethmoid bone +
neural arch +
occipital bone +
orbital part of frontal bone
orbitosphenoid +
orbitosphenoid endochondral element +
os suspensorium +
os suspensorium medial flange
os triangulare
otoccipital
palpebral bone
parahyoid
parapophysis + rib of vertebra 3
parapophysis + rib of vertebra 3 + rib of vertebra 4