[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 Farreidae Gray, 1872
             1 Genus Farrea Bowerbank, 1862
             2 Genus Sarostegia Topsent, 1904