| Term Name: | mesethmoid bone |
|---|---|
| Synonyms: | ethmoid bone |
| Definition: | 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. |
| Appears at: | Larval:Days 21-29 (21d-30d, 7.8mm, 10 teeth) |
| Evident until: | Adult (90d-730d, breeding adult) |
| Ontology: | Anatomy Ontology [ZFA:0000323] |
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