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 Plectoidea Oerley, 1880
                 1 Family Camacolaimidae De Coninck & Schuurmans Stekhoven, 1933
                 2 Family Chronogasteridae Gagarin, 1975 see Family Chronogastridae Gagarin, 1975
                 3 Family Metateratocephalidae Eroshenko, 1973
                 4 Family Plectidae Oerley, 1880