Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass †Lithistida Schmidt, 1870 Order †Orchocladina Rauff, 1895 Family †Anthracosyconidae Finks, 1960 ?Genus †Laubenfelsia King, 1943