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 Family Spongiidae Gray, 1867 Genus †Spongia Linnaeus, 1759