Kingdom Animalia Linnaeus, 1758 - animals Phylum Nematoda Gegenbaur, 1859 - round worms Class Chromadorea Inglis, 1983 Subclass Plectia Hodda, 2007 Superorder Rhabditica Hodda, 2007 Order Spirurida Railliet, 1914 Suborder Ascaridina Inglis, 1983 Superfamily Ascaridoidea Baird, 1853 Family Ascaridae Baird, 1853