It is homologous with the distal ends of the ceratohyals or ventral elements of the hyoidean or second visceral arch.
In the Aglossa, which are remarkable for the large size and complexity of the larynx, the thyro-hyal bones are incorporated into the laryngeal apparatus, whilst the recently discovered Hymenochirus is further remarkable for the large size and ossification of the hyoidean cornua (ceratohyals), a feature tt; which, though not un 3 E /L?_ n.s.c s4.
Hy, Hyoidean cornu Mx, Maxilla.
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