[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Phylum Porifera Grant, 1836 - sponges
     Class Hexactinellida Schmidt, 1870 - hexactinellids
       Subclass Hexasterophora Schulze, 1886
         1 Order Hexactinosa Schrammen, 1903 see Order Hexactinosida Schrammen, 1903
         2 Order Lyssacinosa Zittel, 1877 see Order Lyssacinosida Zittel, 1877