Uberon related term : geniculate ganglion; ganglion geniculi; facial ganglion; internal genu;
Uberon broad term : geniculate;
Uberon Homology note : These (the epibranchial placodes) are focal thickenings of the embryonic ectoderm
that form immediately dorsal and caudal of the clefts between the pharyngeal arches
in all vertebrates, and they produce the neuroblasts which migrate and condense to
form the distal cranial ganglia: the geniculate, petrosal and nodose ganglia. (...)
The one substantial difference between the vertebrate pharyngeal arches and those
of the protochordates is the presence of the epibranchial placodes but the evolution
of these structures was undoubtedly driven by the endoderm.[well established][VHOG];