Kingdom Animalia Linnaeus, 1758 - animals Phylum Nematoda Gegenbaur, 1859 - round worms Class Chromadorea Inglis, 1983 Subclass Plectia Hodda, 2007 Superorder Rhabditica Hodda, 2007 Order Drilonematida Hodda, 2011 [monotypic] 1 Suborder Drilonematina Hodda, 2011 [monotypic]