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 Suborder Kalyptorhynchia Graff, 1905 see Order Kalyptorhynchia Graff, 1905 Genus Gyratrix Ehrenberg, 1831