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 Chromadorea Inglis, 1983
                                                   Subclass Plectia Hodda, 2007
                                                     Superorder Rhabditica Hodda, 2007
                                                       Order Spirurida Railliet, 1914
                                                         Suborder Spirurinaᵀ Railliet & Henry, 1915
                                                           01 Superfamily Camallanoidea Railliet & Henry, 1915
                                                           01.2 [Superfamily Physalopteroidea Railliet, 1893] see Superfamily Camallanoidea Railliet & Henry, 1915
                                                           02 Superfamily Rictularioidea Hall, 1913 [monotypic]
                                                           03 Superfamily Thelazioidea Railliet, 1910
                                                           04 Superfamily Spiruroideaᵀ Oerley, 1885
                                                           05 Superfamily Habronematoidea Chitwood & Wehr, 1932
                                                           05.0 [Superfamily Tetrameroidea Travassos, 1914] see Superfamily Habronematoidea Chitwood & Wehr, 1932
                                                           06 Superfamily Acuarioidea Railliet, Henry & Sisoff, 1912 [monotypic]
                                                           07 Superfamily Filarioidea Weinland, 1858
                                                           08 Superfamily Aproctoidea Yorke & Maplestone, 1926
                                                           09 Superfamily Diplotriaenoidea Skrjabin, 1916 [monotypic]
                                                           10 Superfamily Lucionematoidea Moravec, Molnar & Szekely, 1998 [monotypic]