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
                                 Phylum Porifera Grant, 1836 [coordinate rank] - sponges
                                   Silicispongia Schmidt, 1862
                                     [crown] Class Demospongiae Sollas, 1885 - demosponges
                                       Subclass Heteroscleromorpha Cárdenas, Pérez & Boury-Esnault, 2012
                                         Order Halichondrida Vosmaer, 1887
                                           Family Heteroxyidae Dendy, 1905
                                             01 Genus Heteroxyaᵀ Topsent, 1898
                                             02 Genus Acanthoclada Bergquist, 1970
                                             03 Genus Alloscleria Topsent, 1927
                                             04 Genus Desmoxya Hallmann, 1917
                                             05 Genus Didiscus Dendy, 1922
                                             06 Genus Halicnemia Bowerbank, 1864
                                             07 Genus Higginsia Higgin, 1877
                                             08 Genus Julavis de Laubenfels, 1936
                                             09 Genus Microxistyla Topsent, 1928
                                             10 Genus Myrmekioderma Ehlers, 1870
                                             11 Genus Negombo Dendy, 1905
                                             12 Genus Parahigginsia Dendy, 1924