An ectodermal placode is a thickening of the ectoderm that is the primordium of many structures derived from the ectoderm[GO] [ http://amigo.geneontology.org/amigo/term/GO:0060788 ]

This is just here as a test because I lose it

Term information

editor note

consder adding placodal ectoderm as a distinct class? Also place placodal ectoderm as develops_from ectoderm; need to check taxon-appropriateness

external ontology notes

in GO, covers optic, otic, olfactory, mammary, hair, tooth, sebaceous - and also insect structures

has related synonym

epithelial placode

id

UBERON:0005085

taxon notes

With the exception of the adenohypophysis, homologues of the nonneurogenic placodes (e.g. placodes giving rise to the teeth, hair follicles and lens), appear to be lacking in invertebrate chordates.