Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass †Lithistida Schmidt, 1870
       Order Spirosclerophorida Reid, 1963
         Suborder Rhizomorina Zittel, 1895
           Superfamily Scleritodermatoidea Sollas, 1888
             Family Scleritodermatidae Sollas, 1888
               1 Subfamily Scleritodermatinae Sollas, 1888
               2 Subfamily †Leiodorellinae Schrammen, 1924
               3 Subfamily †Amphithelioninae Schrammen, 1924
               4 Genus †Pleurophymia Pomel, 1872