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 Echinorhynchida Southwell & Macfie, 1925
                                                         Family Echinorhynchidaeᵀ Cobbold, 1876
                                                           Subfamily Echinorhynchinaeᵀ Cobbold, 1876
                                                             Genus Acanthocephalus Koelreuter, 1771
                                                               [Acanthocephalus acerbus Van Cleve, 1931] see Acanthocephalus echigoensis Fujita, 1920
                                                               [Acanthocephalus aculeatus Van Cleve, 1931] see Acanthocephalus echigoensis Fujita, 1920
                                                               Acanthocephalus acutispinus Machado, 1891
                                                               Acanthocephalus acutulus Van Cleve, 1931
                                                               [Acanthocephalus aenigma Reichensperger, 1922] see Oligacanthorhynchus aenigma (Reichensperger, 1922)
                                                               Acanthocephalus alabamensis Amin & Williams, 1983
                                                               Acanthocephalus anguillae (Mueller, 1780)
                                                               Acanthocephalus anthuris (Dujardin, 1845)
                                                               [Acanthocephalus aratus Van Cleve, 1925] see Acanthocephalus lucidus Van Cleve, 1925
                                                               Acanthocephalus balkanicus Batchvoarov, 1974
                                                               [Acanthocephalus bigueti Houin, Golvan, Bygoo, 1965] see Pseudoacanthocephalus bigueti (Houin, Golvan & Bygoo, 1965)
                                                               Acanthocephalus breviprostatus Kennedy, 1982
                                                               [Acanthocephalus bufonicola Kostylev, 1941] see Pseudoacanthocephalus bufonicola (Kostylev, 1941)
                                                               [Acanthocephalus bufonis (Shipley, 1903)] see Pseudoacanthocephalus bufonis (Shipley, 1903)
                                                               [Acanthocephalus caucasicus Petrochenko, 1953] see Pseudoacanthocephalus caucasicus (Petrochenko, 1953)
                                                               Acanthocephalus clavula (Dujardin, 1845)
                                                               Acanthocephalus correalimai Machado, 1970
                                                               Acanthocephalus criniae Anow, 1971
                                                               Acanthocephalus curtus (Achmerov et al., 1941)
                                                               Acanthocephalus dirus (Van Cleve, 1931)
                                                               Acanthocephalus domerguei (Golvan et al., 1972)
                                                               Acanthocephalus echigoensis Fujita, 1920
                                                               Acanthocephalus elongatus Van Cleve, 1937
                                                               Acanthocephalus falcatus (Froelich, 1789)
                                                               Acanthocephalus fluviatilis Paperna, 1964
                                                               Acanthocephalus galaxii Hine, 1977
                                                               Acanthocephalus goaensis Jain & Gupta, 1981
                                                               Acanthocephalus gotoi Van Cleve, 1925
                                                               Acanthocephalus graciliacanthus Meyer, 1932
                                                               Acanthocephalus haranti Golvan & Oliver, 1969
                                                               Acanthocephalus hastae Bayliss, 1944
                                                               [Acanthocephalus jacksoni Bullock, 1962] see Acanthocephalus dirus (Van Cleve, 1931)
                                                               Acanthocephalus japonicus (Fukui & Morisita, 1936)
                                                               Acanthocephalus kaskmirensis Datta, 1936
                                                               Acanthocephalus kubulensis Datta & Soota, 1956
                                                               [Acanthocephalus lateralis (Leidy, 1851)] see Echinorhynchus lateralis Leidy, 1851
                                                               Acanthocephalus lucidus Van Cleve, 1925
                                                               Acanthocephalus lucii (Mueller, 1776)
                                                               Acanthocephalus lutzi (Linstow, 1896)
                                                               Acanthocephalus madagascariensis Golvan, 1965
                                                               Acanthocephalus minor Yamaguti, 1935
                                                               Acanthocephalus nanus Van Cleve, 1925
                                                               [Acanthocephalus oncorhynchi Fujita, 1920] see Acanthocephalus echigoensis Fujita, 1920
                                                               Acanthocephalus opsalichthydis
                                                               Acanthocephalus opsariichthydis Yamaguti, 1935
                                                               Acanthocephalus parallelotestis Achmerov et al., 1941
                                                               Acanthocephalus parksidei Amin, 1975
                                                               Acanthocephalus paronai (Condorelli, 1897)
                                                               Acanthocephalus pesteri Tadros, 1966
                                                               Acanthocephalus ranae (Schrank, 1788)
                                                               Acanthocephalus rauschi (Schmidt, 1969)
                                                               Acanthocephalus sameguiensis
                                                               Acanthocephalus serendibensis Crusz & Mills, 1970
                                                               [Acanthocephalus sinensis Van Cleve, 1937] see Pseudoacanthocephalus bufonis (Shipley, 1903)
                                                               Acanthocephalus srilankensis Crusz & Ching, 1976
                                                               Acanthocephalus tahleguahensis Oetinger & Buckner, 1976
                                                               Acanthocephalus tenuirostris (Achmerov et al., 1941)
                                                               Acanthocephalus tigrinae (Shipley, 1903)
                                                               Acanthocephalus tumescens (Linstow, 1896)
                                                               [Acanthocephalus vancleavei Hughes & Moore, 1943] see Fessisentis vancleavei (Hughes & Moore, 1943)