part of part of in taxon Bilateria Homo sapiens posterior region of body tail AEO:0000109 EHDAA:9198 EFO:0000963 MAT:0000094 Wikipedia:Tail WBbt:0005741 GAID:1245 caudal subdivision BTO:0001348 MESH:D013623 An external caudal extension of the body. In chordates, the tail is post-anal, in other animals the anus ends in the tail. BILA:0000117 MIAA:0000094 UBERON:0002415 subdivision of organism along main body axis