Kingdom Animalia Linnaeus, 1758 - animals
Phylum Nematoda Gegenbaur, 1859 - round worms
Class Dorylaimea Hodda, 2007
Subclass Trichocephalia Hodda, 2007 [monotypic]
Superorder Trichocephalica Hodda, 2007
Order Dioctophymatida Ryzhikov & Sonin, 1981 [monotypic]
Suborder Dioctophymatina Chitwood, 1933 [monotypic]
Superfamily Dioctophymatoidea Railliet, 1915
1 Family Dioctophymatidae Railliet, 1915
2 Family Soboliphymatidae Petrov, 1930