Phylum Porifera Grant, 1836 - sponges
   Class Hexactinellida Schmidt, 1870 - hexactinellids
     Subclass Hexasterophora Schulze, 1886
       Order Lychniscosa Schrammen, 1903 see Order Lychniscosida Schrammen, 1903
         Family Dactylocalycidae Gray, 1867
           Subfamily †Dactylocalycinae Gray, 1867
             Genus †Exanthesis Regnard, 1925
               Subgenus †E. (Eligma) Regnard, 1925, nom. illeg.