Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lyssacinosa Zittel, 1877 see Order Lyssacinosida Zittel, 1877
         Family Asemematidae Reid, 2004 see Family Asconematidae Schulze, 1886
           Subfamily Caulophacinae Schulze, 1886 [monotypic] see Subfamily Lanuginellinae Gray, 1872
             1 Genus †Caulophacus Schulze, 1886