living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Parazoa (Sollas, 1884) see Phylum Porifera Grant, 1836
         Phylum Porifera Grant, 1836 - sponges
           Class Hexactinellida Schmidt, 1870 - hexactinellids
             Subclass Hexasterophora Schulze, 1886
               Order Hexactinosida Schrammen, 1903
                 1 Family Farreidae Gray, 1872
                 2 Family Euretidae Zittel, 1877
                 3 Family Craticulariidae Rauff, 1893
                 4 Family Aphrocallistidae Gray, 1867
                 5 Family Tretodictyidae Schulze, 1886
                 6 Family Aulocalycidae Ijima, 1927