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
                                           Order †Prioniodontida Dzik
                                             Family †Icriodontidae Müller & Müller
                                               Genus †Icriodusᵀ Branson & Mehl, 1933
                                                 †Icriodus alternatus Branson & Mehl
                                                 ?†Icriodus chojnicensis Matyja
                                                 ?†Icriodus cornutus Sannemann
                                                 ?†Icriodus costatus (Thomas)
                                                 †Icriodus erucisimilis D.I. Johnston & B.D.E. Chatterton, 2001
                                                 †Icriodus iowaensis Youngquist & Peterson
                                                 †Icriodus latericrescens Branson & Mehl, 1938
                                                 †Icriodus nodosus
                                                 ?†Icriodus raymondi Sandberg & Ziegler
                                                 †Icriodus stenoancylus D.I. Johnston & B.D.E. Chatterton, 2001
                                                 †Icriodus woschmidti Ziegler, 1960