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
                                     Class Hexactinellida Schmidt, 1870 - hexactinellids
                                       Subclass Amphidiscophora Schulze, 1886
                                         Order Amphidiscosida Schrammen, 1924
                                           Family †Stiodermatidae Finks, 1960
                                             01 Genus †Calcihexactinia Sdzuy, 1969
                                             02 Genus †Protohyalostelia Chapman, 1940
                                             03 Genus †Rigbyella Mostler & Mosleh-Yazdi, 1976, nom. illeg.
                                             04 Genus †Thoracospongia Mehl, 1996
                                             05 Genus †Hyalostelia Zittel, 1879
                                             06 Genus †Astroconia Sollas, 1881
                                             07 Genus †Divaricospongia Rigby & Maher, 1995
                                             08 Genus †Acanthactinella Hinde, 1887
                                             09 Genus †Itararella Kling & Reif, 1969
                                             10 Genus †Rhakistella Weller, 1931
                                             11 Genus †Stiodermaᵀ Finks, 1960
                                             12 Genus †Uralonema Librovich, 1929
                                             13 Genus †Irpaspongia Mehl & Mostler, 1994