Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
                     [crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       [crown] Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         [crown] Clade Opisthokonta Cavalier-Smith 1987 [Simpson & Medina 2020] - animal-fungal clade
                           Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
                                 Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
                                   Subkingdom Bilateria Hatschek, 1888 - bilaterians
                                     Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
                                       Infrakingdom Protostomia Grobben, 1908
                                         Superphylum Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake, 1997
                                           Introverta Nielsen, 1995
                                             Nematoida Rudolphi, 1808
                                               Phylum Nematoda Gegenbaur, 1859 - round worms
                                                 Class Dorylaimea Hodda, 2007
                                                   Subclass Bathyodontia Hodda, 2007
                                                     Order Mononchida Jairajpuri, 1969 [monotypic]
                                                       Suborder Mononchinaᵀ Kirjanova & Krall, 1969
                                                         Superfamily Mononchoideaᵀ Filipjev, 1934
                                                           Family Mononchidaeᵀ Filipjev, 1934
                                                             Subfamily Mononchinaeᵀ Filipjev, 1934
                                                               Genus Mononchusᵀ Bastian, 1865
                                                                 Mononchus aquaticus Coetzee, 1968
                                                                 Mononchus niddensis Skwarra, 1921
                                                                 Mononchus truncatus Bastian, 1865
                                                                 Mononchus tunbridgensis Bastian, 1865