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]
           neomura Cavalier-Smith, 1987
             Eukaryota Chatton, 1925 - eukaryotes
               discaria Cavalier-Smith, 2021
                 dorsates Cavalier-Smith, 2021
                   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
                           Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Animalia Linnaeus, 1758 - animals
                                 Porifera Grant, 1836 - sponges
                                   Silicispongia Schmidt, 1862
                                     [branch-based clade] Hexactinellida Schmidt, 1870 - hexactinellids
                                       Hexasterophora Schulze, 1886
                                         Hexactinosida Schrammen, 1903
                                           Sceptrulophora Mehl, 1992
                                             Tretodictyidae Schulze, 1886
                                               Tretodictyinae Schulze, 1886
                                                 Tretocalyx Schulze, 1901