A Yukkuri Clan is the basic form of cooperation between several Yukkuri families, mostly related by family or by forced combination over a large (in yukkuri time) time span. Yukkuri Clans are the equivalent of Human Clans, or small villages, denoting both the clan as an aggregate of individuals bound by kinship and family, both as an organized community with its territories and structures. Originally a Wild Yukkuri structure, it has since adapted by City Yukkuris, with the needed differences.