Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order Dictyoceratida Minchin, 1900 1 Family Spongiidae Gray, 1867 2 Family Dysideidae Gray, 1867 3 Genus †Felixium de Laubenfels, 1955