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 Tylenchoidea Örley, 1880
                 01 Family Atylenchidae Skarbilovich, 1959
                 02 Family Belonolaimidae Whitehead, 1959
                 03 Family Boleodoridae Khan, 1964
                 04 Family Dolichodoridae Chitwood, 1950
                 05 Family Ecphyadophoridae Skarbilovich, 1959
                 06 Family Heteroderidae Filipjev & Schuurmans Stekhoven, 1941
                 07 Family Hoplolaimidae Filipjev, 1934
                 08 Family Meloidogynidae Skarbilovich, 1959
                 09 Family Psilenchidae Paramonov, 1967
                 10 Family Pratylenchidae Thorne, 1949
                 11 Family Rotylenchulidae Husain & Khan, 1967
                 12 Family Telotylenchidae Siddiqi, 1960
                 13 Family Tylenchidae Örley, 1880
                 14 Family Tylodoridae Paramonov, 1967