[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
       Order Rhabdocoela Ehrenberg, 1831 see Infraclass Rhabdocoela Ehrenberg, 1831
         Suborder Typhloplanida
           1 Family Byrsophlebidae Graff, 1905
           2 Family Ciliopharyngiellidae Ax, 1952
           3 Family Promesostomidae Hartog, 1964
           4 Family Solenopharyngidae Graff, 1882
           5 Family Trigonostomidae Graff, 1905 (1882)
           6 Family Typhloplanidae (Luther, 1904) Graff, 1905