part of part of head cranial placode AAO:0010466 Comparisons of developmental gene expression suggest that the anterior ectoderm in amphioxus may be homologous to the vertebrate olfactory placode, the only vertebrate placode with primary, not secondary, neurons EFO:0001650 Ectodermal placode that develops in the head into a part of the sensory nervous system. With a few exceptions (lens, adenohypophyseal), cranial placodes are neurogenic. MAT:0000369 MIAA:0000369 The term placode or placodes also applies to developing organs such as teeth, mammary glands, hair follicles, feathers and scales. We include a separate parent class for this. UBERON:0002546 XAO:0000305 cranial placodes placode to avoid confusion, we include neurogenic placode as a subclass. Do not merge. uberon ectodermal placode