Subsequent vertebrate evolution has also involved major alterations to the pharynx; perhaps the most notable occurred with the evolution of the gnathostomes. This involved substantial modifications to the most anterior pharyngeal segments, with the jaw forming from the first, anterior, pharyngeal segment, while the second formed its supporting apparatus, the hyoid.[well established][VHOG]

relationship to palatoquadrate to be added

uberon

UBERON:0007238

• maxillary prominence
• primary palate

• 1st arch maxillary mesenchyme
• 1st arch maxillary ectoderm