part_of part of part of develops from has potential to developmentally contribute to peripheral nervous system external ectoderm autonomic nervous system epibranchial placode VHOG:0000117 AAO:0011036 UBERON:0003078 FMA:293968 Focal thickenings of the embryonic ectoderm that form immediately dorsal and caudal of the clefts between the pharyngeal arches and that produce the neuroblasts that migrate and condense to form the distal cranial ganglia. XAO:0000284 ventrolateral placode EFO:0003455 ZFA:0001294 TAO:0001294 neurogenic placode