Kingdom Animalia Linnaeus, 1758 - animals
Phylum Nematoda Gegenbaur, 1859 - round worms
Class Chromadorea Inglis, 1983
Subclass Plectia Hodda, 2007
Superorder Rhabditica Hodda, 2007
Order Panagrolaimida Hodda, 2007
Suborder Tylenchina Chitwood, 1950
Superfamily Criconematoidea Taylor, 1936 (1914)
1 Family Criconematidae Taylor, 1936 (1914)
2 Family Hemicycliophoridae Skarbilovich, 1959
3 Family Paratylenchidae Thorne, 1949
4 Family Sphaeronematidae Raski & Sher, 1952
5 Family Tylenchulidae Skarbilovich, 1947