Term Name:	rhamphotheca
Synonyms:	horny sheath of beak, outer keratin layer of beak
Definition:	thin keratinized layer of epidermis projecting from outer surface of beak[WP].
Ontology:	Uberon Ontology [UBERON:0007330]

Relationships

is part of:	beak skin epidermis
is a type of:	ectoderm-derived structure head external integument structure
has subtype:	mandibular rhamphotheca maxillary rhamphotheca