Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         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
                     Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       Clade Obazoa Brown, Sharpe, Silberman, Heiss, Lang, Simpson & Roger 2013
                         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 Deuterostomia Grobben, 1908
                                         Phylum Chordata Bateson, 1885 - chordates
                                           Subphylum Craniata auct.
                                             Infraphylum Vertebrata Lamarck, 1801 - vertebrates
                                               Clade Pan-Gnathostomata Downs 2020
                                                 Superclass Gnathostomataᵀ Gegenbaur, 1874 - jawed vertebrates
                                                   [stem] Class †Placodermi McCoy, 1848 [paraphyletic]
                                                     Clade †Arthrodira Woodward, 1891
                                                       Order †Phlyctaeniiformes
                                                         Suborder †Brachythoraci Gross, 1932
                                                           Clade †Eubrachythoraci Miles, 1971, sedis mutabilis
                                                             Clade †Pachyosteomorphi Stensiö, 1944 [paraphyletic] - pachyosteomorphs
                                                               Clade †Aspinothoracidi Stensiö, 1959
                                                                 1? Family †Bulbocanthidae Young & Goujet, 2003
                                                                 2? Family †Leiosteidae Stensiö, 1963
                                                                 3 [plesion] Genus †Tapinosteus
                                                                 4.1 Family †Trematosteidae Gross, 1932
                                                                 4.2.1.1 [plesion, p.p.] Genus †Bruntonichthys Dennis & Miles, 1980
                                                                 4.2.1.2 [plesion, p.p.] Genus †Kendrickichthys Dennis & Miles, 1980
                                                                 4.2.2.1 [plesion] Genus †Bullerichthys Dennis & Miles, 1980
                                                                 4.2.2.2.1 Family †Dinichthyidae Newberry, 1885 [monotypic]
                                                                 4.2.2.2.2.1 Family †Hadrosteidae Gross, 1932
                                                                 4.2.2.2.2.2.1.1 ?Family †Mylostomatidae Woodward, 1891
                                                                 4.2.2.2.2.2.1.2.1 Family †Bungartiidae Denison, 1975
                                                                 4.2.2.2.2.2.1.2.2 Family †Titanichthyidae Dean, 1901
                                                                 4.2.2.2.2.2.2.1 [plesion] Genus †Gorgonichthys Claypole, 1892 [monotypic]
                                                                 4.2.2.2.2.2.2.2.1 [plesion] Genus †Heintzichthys Whitley, 1933
                                                                 4.2.2.2.2.2.2.2.2.1 Family †Braunosteidae Stensiö, 1963
                                                                 4.2.2.2.2.2.2.2.2.2.1.1 Family †Brachydeiridae Gross, 1932
                                                                 4.2.2.2.2.2.2.2.2.2.1.2 Family †Leptosteidae Gross, 1932
                                                                 4.2.2.2.2.2.2.2.2.2.2 Family †Selenosteidae Dean, 1901