Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order Haplosclerida Topsent, 1928 Family Spongillidae Gray, 1867 Genus †Spongilla Lamarck, 1816