Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
     Class Turbellaria Ehrenberg, 1831 - planarians see Subphylum Turbellaria Ehrenberg, 1831
       Order Rhabdocoela Ehrenberg, 1831 see Infraclass Rhabdocoela Ehrenberg, 1831
         1 Suborder Dalyellioida (L. v. Graff, 1905) Bresslau, 1933 see Suborder Dalyelliida
         2 Suborder Typhloplanoida Graff, 1908 see Suborder Typhloplanida
         3 Suborder Kalyptorhynchia Graff, 1905 see Order Kalyptorhynchia Graff, 1905
         4 Suborder Temnocephalida