Median unpaired cartilage bone that ossifies as a perichondral lamellae ensheathing the nasal septum anterodorsally and laterally (Harrington, 1955). In adult D. rerio, the center of the mesethmoid remains cartilaginous (Cubbage & Mabee, 1996). The mesethmoid meets the supraethmoid dorsally, the lateral ethmoids posterolaterally, and the vomer and parasphenoid ventrally in synostoses. Anterolaterally the mesethmoid meets the preethmoids in synchondroses. [ ORCiD:0000-0001-9114-8737 GOC:mh ]
Synonyms: ethmoid bone
Term information
Term relations
- endochondral bone
- mesethmoid bone
- part of some neurocranium
- part of some chondrocranium
- develops from some neurocranial trabecula
- existence starts during or after some larval:days 21-29
- develops from some ethmoid cartilage
- part of some olfactory region