[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
         Order Hexactinosa Schrammen, 1903 see Order Hexactinosida Schrammen, 1903
           Family Euretidae Zittel, 1877
             1 Genus Chonelasma Schulze, 1886
             2 Genus Dactylocalyx Stutchbury, 1842
             3 Genus Eurete Semper, 1868
             4 Genus Periphragella Marshall, 1875
             5 Genus Pityrete Topsent, 1928