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 Syndermata Ahlrichs, 1995
                                               Hemirotifera
                                                 Pararotatoria Sudzuki, 1964
                                                   Acanthocephala Kohlreuther, 1771
                                                     Class Palaeacanthocephala (Meyer, 1931)
                                                       Order Polymorphida Petrochenko, 1956
                                                         Family Polymorphidaeᵀ Meyer, 1931
                                                           Genus Arhythmorhynchus Lühe, 1911
                                                             Arhythmorhynchus brevis Van Cleave, 1916
                                                             Arhythmorhynchus capellae (Yamaguti, 1935)
                                                             Arhythmorhynchus comptus Van Cleave & Rausch, 1950
                                                             Arhythmorhynchus distinctus Baer, 1956
                                                             Arhythmorhynchus eroliae (Yamaguti, 1939)
                                                             Arhythmorhynchus frassoni (Molin, 1858)
                                                             Arhythmorhynchus frontospinosus (Tubangui, 1935)
                                                             Arhythmorhynchus jeffreyi Schmidt, 1973
                                                             Arhythmorhynchus johnstoni Golvan, 1960
                                                             Arhythmorhynchus limosae Edmonds, 1971
                                                             Arhythmorhynchus longicollis (Villot, 1875)
                                                             Arhythmorhynchus petrochenkoi (Schmidt, 1969)
                                                             Arhythmorhynchus plicatus (Linstow, 1883)
                                                             Arhythmorhynchus pumiliorostris Van Cleave, 1916
                                                             Arhythmorhynchus siluricola Dollfus, 1929
                                                             Arhythmorhynchus teres Van Cleave, 1920
                                                             Arhythmorhynchus tigrinus Moghe & Das, 1953
                                                             Arhythmorhynchus trichocephalus (Leuckart, 1876)
                                                             Arhythmorhynchus tringi Gubanov, 1952
                                                             Arhythmorhynchus uncinatus (Kaiser, 1893)
                                                             Arhythmorhynchus xeni Atrashkevich, 1978