part of part of develops from develops from contributes to morphology of Homo sapiens ethmoid bone http://upload.wikimedia.org/wikipedia/commons/6/66/Illu_cranial_bones2.jpg VHOG:0001317 MESH:D005004 Wikipedia:Ethmoid_bone A light spongy bone located between the eye sockets, forming part of the walls and septum of the superior nasal cavity, and containing perforations for the passage of olfactory nerve fibers. [TFD][VHOG] os ethmoidale MA:0001483 UBERON:0001679 FMA:52740 ethmoidal ethmoidal bone A bone in the skull that separates the nasal cavity from the brain. As such, it is located at the roof of the nose, between the two orbits. The cubical bone is lightweight due to a spongy construction. The ethmoid bone is one of the bones that makes up the orbit of the eye[WP]. BTO:0004140 GAID:212 The ethmoid region of the chondrocranium and the nasal capsules, which were largely unossified in early tetrapods and ancestral amniotes, are represented in mammals by the ethmoid and turbinates bones, respectively.[well established][VHOG] NCIT:C12711 UMLS:C0015027 SCTID:272674006 Note the WP states the Neurocranium contains the ethmoid bone, both MA and FMA place the ethmoid as part of the viscerocranium. FMA also has it in neurocranium (via basicranium). Ideally we would have non-overlapping divisions of the skull, but for now we follow FMA todo - homology e.g. mesethmoid of teleost ethmoid EMAPA:19018 endochondral bone basicranium facial bone ethmoid bone primordium facial skeleton neurocranium bone ethmoid region