Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lyssacinosa Zittel, 1877 see Order Lyssacinosida Zittel, 1877
         Family Euplectellidae Gray, 1867
           Subfamily Taegerinae Schulze, 1886 see Subfamily Corbitellinae Gray, 1872
             Genus †Tillichtia du Dresnay, Termier & Termier, 1978