Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass †Lithistida Schmidt, 1870 Order †Orchocladina Rauff, 1895 Family †Streptosolenidae Johns, 1994 Genus †Lissocoelia Bassler, 1927