Kingdom Animalia Linnaeus, 1758 - animals Phylum Nematoda Gegenbaur, 1859 - round worms Class Enoplea Inglis, 1983 Subclass Enoplia Pearse, 1942 Superorder Enoplica Hodda, 2007 Order Ironida Hodda, 2007 Suborder Oxystominina Siddiqi, 1983 [monotypic] Superfamily Oxystominoidea Chitwood, 1935 Family Leptosomatidae Filipjev, 1916