Dermal bone that first appears as paired ossifications in the membrane (dermis) dorsolateral to the ethmoid cartilage and anteriolateral to the lateral ethmoids, later having the appearance of one butterfly-shaped element. Fused to the anterodorsal margin of the mesethmoid. Bordered anteriorly by the kinethmoid and posteriorly by the frontal. [ ORCiD:0000-0001-9114-8737 GOC:mh ]
Term information
Term relations
- dermal bone
- supraethmoid
- part of some dermatocranium
- existence starts during or after some larval:days 21-29
- part of some olfactory region