organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Pseudocoelomata see [unranked] Pseudocoelomates Hyman, 1951
           1 Phylum Gastrotricha Metschnikoff, 1864 - gastrotrichs
           2 Phylum Rotifera Cuvier, 1798 - rotifers see Phylum Syndermata Ahlrichs, 1995
           3 Phylum Kinorhyncha Reinhard, 1887 - kinorhynchs
           4 Phylum Acanthocephala Kohlreuther, 1771 - acanthocephalans see [unranked] Acanthocephala Kohlreuther, 1771
           5 Phylum Entoprocta Nitsche, 1869 - entoprocts
           6 Phylum Nematoda Gegenbaur, 1859 - round worms
           7 Phylum Nematomorpha Vejdovsky, 1886 - horsehair worms