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 Cladorhizidae Dendy, 1922 1 Genus †Chondrocladia Thomson, 1873 2 Genus †Cladorhiza Sars, 1872