[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
     Class Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
       01 Order Acoela Uljanin, 1870 - acoels see Class Acoela Uljanin, 1870
       02 Order Catenulida Meixner, 1924 - catenulid flatworms
       03 Order Haplopharyngida
       04 Order Lecithoepitheliata
       05 Order Macrostomida
       06 Order Nemertodermatida Karling, 1940 - nemertodermatids
       07 Order Polycladida Lang, 1884
       08 Order Prolecithophora Karling, 1940
       09 Order Rhabdocoela Ehrenberg, 1831 see Infraclass Rhabdocoela Ehrenberg, 1831
       10 Order Seriata