Kingdom Animalia Linnaeus, 1758 - animals Phylum Nematoda Gegenbaur, 1859 - round worms Class Chromadorea Inglis, 1983 Subclass Chromadoria Adamson, 1987 [monotypic] Superorder Chromadorica Hodda, 2007 Order Selachinematida Hodda, 2011 [monotypic] Suborder Selachinematina Hodda, 2011 [monotypic] Superfamily Selachinematoidea Cobb, 1915 Family Choanolaimidae Filipjev, 1926