living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
           Class Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
             01 Genus Acanthiella Rieger & Sterrer, 1975
             02 Order Nemertodermatida Karling, 1940 - nemertodermatids
             03 Order Acoela Uljanin, 1870 - acoels see Class Acoela Uljanin, 1870
             04 Order Catenulida Meixner, 1924 - catenulid flatworms
             05 Order Macrostomida
             06 Order Haplopharyngida
             07 Order Proplicastomata
             08 Order Lecithoepitheliata
             09 Order Neorhabdocoela see Order Rhabdocoela Ehrenberg, 1831
             10 Order Prolecithophora Karling, 1940
             11 Order Proseriata Meixner, 1938
             12 Order Tricladida Lang, 1884
             13 Order Polycladida Lang, 1884