in taxon Eumetazoa germ layer EMAPA:36033 germinal layer embryonic germ layer MESH:D005855 A layer of cells produced during the process of gastrulation during the early development of the animal embryo, which is distinct from other such layers of cells, as an early step of cell differentiation. The three types of germ layers are the endoderm, ectoderm, and mesoderm. XAO:0003011 embryonic germ layers FMA:69069 embryonic tissue Wikipedia:Germ_layer TAO:0001122 NCIT:C54105 NCIT:C12950 Classically the germ layers are ectoderm, mesoderm and endoderm. Alternatively: primary = ectoderm, endoderm; secondary=mesoderm; tertiary=dorsal mesoderm, NC[https://github.com/obophenotype/uberon/wiki/The-neural-crest] UBERON:0000923 VHOG:0001223 GAID:1303 FBbt:00000110 The Bilateria are triploblastic (with true endoderm, mesoderm, and ectoderm) (...).[well established][VHOG] BTO:0000556 AAO:0000480 ZFA:0001122 BILA:0000035 UMLS:C1708239 UMLS:C0920502 primary germ layer germ layer / neural crest