Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Clavaxinellida Lévi, 1956
       Order Clavulina Vosmaer, 1887
         Family Adociidae de Laubenfels, 1936 see Family Chalinidae Gray, 1867
           Genus †Aka de Laubenfels, 1936, nom. illeg. see Genus Siphonodictyon Bergquist, 1965