part of part of postaxialmost part of develops from develops from composed primarily of ulna GAID:188 Wikipedia:Ulna NCIT:C12809 UBERON:0001424 SCTID:181948009 MESH:D014457 MA:0001358 AAO:0000789 The major postaxial endochondral bone in the anterior zeugopod[Phenoscape]. The corresponding bone in the posterior fin/limb is the fibula. FMA:23466 EMAPA:19104 galen:Ulna VSAO:0005013 bone tissue forelimb zeugopod bone forelimb long bone ulna cartilage element forelimb zeugopod skeleton ulna endochondral element