life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukarya Chatton, 1925 see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         "Bilaterally Symmetrical Animals" see [unranked] Bilateria Hatschek, 1888
           Acoelomata see [unranked] Acoelomates Hyman, 1951
             1 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
             2 Phylum Gnathostomulida Ax, 1956 - gnathostomulids
             3 Phylum Nemertina Oersted, 1844 see Phylum Nemertini