[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryota Whittaker & Margulis, 1978 see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom N.N.
         Phylum Porifera Grant, 1836 - sponges
           Class Hexactinellida Schmidt, 1870 - hexactinellids
             1 Order Amphidiscosida Schrammen, 1924
             2 Order Aulocalycoida Tabachnick & Reiswig, 2000
             3 Order Fieldingida Tabachnick & Janussen, 2004 see Suborder Sceptrulophora Mehl, 1992
             4 Order Hexactinosida Schrammen, 1903
             5 Order Lychniscosida Schrammen, 1903
             6 Order Lyssacinosida Zittel, 1877