part of part of adjacent_to developmentally_replaces skin epidermis (...) outer epithelia in all metazoan animals are homologous. (...) The ancestor of all metazoans likely had an epidermis with a basal extracellular matrix (ECM), an apical extracellular glycocalyx, and one cilium with a striated rootlet per cell.[well established][VHOG] A cellular, multilayered epithelium derived from the ectoderm. Zebrafish epidermis consists only of living cells unlike terrestrial vertebrates in which dead, keratinized cells are present. Le Guellec et al, 2004.[TAO] AAO:0000143 BTO:0000404 CALOHA:TS-0283 EFO:0000954 EMAPA:17528 EV:0100153 FMA:70596 GAID:932 MA:0000153 MAT:0000154 MESH:D004817 MIAA:0000154 TAO:0000105 The outer epithelial layer of the external integument of the body that is derived from the embryonic epiblast.[AAO] The outer epithelial layer of the skin that is superficial to the dermis. UBERON:0001003 UMLS:C0014520 VHOG:0000077 XAO:0000028 ZFA:0000105 Zebrafish epidermis consists only of living cells unlike terrestrial vertebrates in which dead, keratinized cells are present. In terrestrial vertebrates the epidermis often forms an outer keratinized or cornified layer, the stratum corneum. Interaction between the epideris and dermis gives rise to feathers (birds), hair and mammary glands (mammals), teeth and scales (placoid: chondrichthyans; cosmoids, ganoid, cycloid in bony fishes). epidermal epidermis relationship loss: subclass external integument structures (AAO:0000961)[AAO] skin uberon vertebrate epidermis dermis skin of body periderm outer epithelium external integument structure