Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Nematoda Gegenbaur, 1859 - round worms
     Class Chromadorea Inglis, 1983
       Subclass Plectia Hodda, 2007
         Superorder Plectica Hodda, 2007
           Order Plectida Malakhov, 1982 [monotypic]
             Suborder Plectina Malakhov, 1982
               Superfamily Haliplectoidea Chitwood, 1951
                 1 Family Haliplectidae Chitwood, 1951
                 2 Family Peresianidae Vitiello & De Coninck, 1968