Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       Order Poecilosclerida Topsent, 1928
         Family Acarniidae de Laubenfels, 1936 see Family Myxillidae Lundbeck, 1905
           Genus †Acarnia Gray, 1867 see Subgenus Acarnia Gray, 1867