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 Spiralia Schleip, 1929
                                           Clade Platytrochozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                             Clade Rouphozoa Struck, Wey-Fabrizius, Golombek, Hering, Weigert, Bleidorn, Klebow, Iakovenko, Hausdorf, Petersen, Kück, Herlyn & Hankeln 2014
                                               Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
                                                 Suborder Typhloplanida
                                                   Family Trigonostomidae Graff, 1905 (1882)
                                                     Subfamily Trigonostominaeᵀ (Graff, 1905) Luther, 1948 (1882)
                                                       Genus Ceratopera den Hartog, 1964
                                                         01 Ceratopera axi (Riedl, 1954)
                                                         02 Ceratopera bermudensis Karling, 1986
                                                         03 Ceratopera bifida Ehlers & Ax, 1974
                                                         04 Ceratopera ehlersi Karling, 1986
                                                         05 Ceratopera gracilisᵀ (Graff, 1882)
                                                         06 Ceratopera levinseni Hartog, 1964
                                                         07 Ceratopera paradoxa (Pereyaslawzewa, 1892)
                                                         08 Ceratopera paragracilis Ehlers & Ax, 1974
                                                         09 Ceratopera pilifera Karling, 1986
                                                         10 Ceratopera reisingeri (Riedl, 1959)
                                                         11 Ceratopera sellai (Steinböck, 1933)
                                                         12 Ceratopera steinboecki (Riedl, 1959)