Palatoquadrate
In some fishes, the palatoquadrate is the dorsal component of the mandibular arch, the ventral one being Meckel's cartilage. The palatoquadrate forms from splanchnocranium in various chordates including placoderms and acanthodians.[1]
See also
Look up palatoquadrate in Wiktionary, the free dictionary.
References
- Kardong, Kenneth V. Vertebrates Comparative Anatomy, Function, Evolution. p. 227.