Preferred Label : rhamphotheca;
Uberon definition : thin keratinized layer of epidermis projecting from outer surface of beak[WP].;
Uberon related term : horny sheath of beak; outer keratin layer of beak;
Uberon Development note : This covering arises from the Malpighian cells of the bird's epidermis,[9] growing
from plates at the base of each mandible;
Origin ID : 0007330;
part of
thin keratinized layer of epidermis projecting from outer surface of beak[WP].
