The special body plan of Yunnanozoon is almost identical to that of the living enteropneust hemichordate Balanoglossus,which suggests that the earlyCambrian creature is ancestral to the hemichordates.
这种独特的身体造型与现生肠鳃类半索无二致,从而表明这个早寒武世
是地球
半索
门中已知最古老的祖先类型。