Tiseldin timdudtin (Assaɣ usnan: Eumetazoa) d angazsartu id yettgin tawsit tagrawant dgi yella wezgen ameqran n iɣersiwen anagar timeččimin d timesfilin d waṭas n telɣiwin iden inegren neɣ ur nettwassen, Tasartut-nsent uessers-it umusnaw Bochlee deg useggas n 1910 dgi id tiga d adu-tgelda deg tsartut n tesnudert