Cranial ectodermal placode with potential to develop into a component of the nervous system, such as nerves or ganglia.
Comment:
[taxon-note] "While some sensory placodes (otic and olfactory) may have homologues in basal chordates (Wada et al., 1998), the so-called neurogenenic placodes (trigeminal, otic, lateral line and epibranchial placodes) appear to have emerged at a later time (Shimeld and Holland, 2000)" xsd:string {source="NCBIBook:NBK53171"}