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 Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake, 1997
                                           Panarthropoda Nielsen, 1995 - panarthropods
                                             Tactopoda Budd, 2001
                                               Phylum Arthropoda Siebold, 1848 - arthropods
                                                 Euarthropoda
                                                   Antennulata
                                                     Subphylum Mandibulata Snodgrass, 1938
                                                       Infraphylum Pancrustacea Zrzavý & Štys, 1997
                                                         Oligostraca
                                                           Ichthyostraca Zrzavý et al., 1997
                                                             Subclass Branchiura Thorell, 1864 - fish lice
                                                               Order †Cyclida Schram, Vonk & Hof, 1997, nom. corr.
                                                                 Family †Cyclidaeᵀ Packard, 1885
                                                                   Genus †Cyclusᵀ de Koninck, 1841
                                                                     01 †Cyclus bilobatus Woodward, 1870
                                                                     02 †Cyclus wrighti Woodward, 1870
                                                                     03 †Cyclus jonesianus Woodward, 1870
                                                                     04 †Cyclus torosus Woodward, 1870
                                                                     05 †Cyclus simulans Reed, 1908
                                                                     06 †Cyclus radialisᵀ (Phillips, 1835)
                                                                     07 †Cyclus harknesi Woodward, 1870
                                                                     08 †Cyclus woodwardi Reed, 1893
                                                                     09 †Cyclus martinensis Goldring, 1967
                                                                     10 †Cyclus tazawai Niko & Ibaraki, 2011
                                                                     11 †Cyclus communis Rogers, 1902
                                                                     12 †Cyclus limbatus Rogers, 1902
                                                                     13 †Cyclus packardi Rogers, 1902
                                                                     14 †Cyclus miloradovitchi Kramarenko, 1961