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 Gnathifera Ahlrichs, 1995
                                             Phylum Gnathostomulida Ax, 1956 - gnathostomulids
                                               Order Filospermoidea Sterrer, 1972
                                                 Family Haplognathiidae Sterrer, 1972
                                                   Genus Haplognathiaᵀ Sterrer, 1970
                                                     Haplognathia filum (Sterrer, 1966)
                                                     Haplognathia gubbarnorum (Sterrer, 1969)
                                                     Haplognathia lunulifera (Sterrer, 1969)
                                                     Haplognathia rosea (Sterrer, 1969)
                                                     Haplognathia ruberrima (Sterrer, 1966)
                                                     Haplognathia rubromaculata (Sterrer, 1969)
                                                     Haplognathia simplex (Sterrer, 1966)