Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass †Lithistida Schmidt, 1870 Order Tetralithistida Lagneau-Hérenger, 1962 Suborder Pseudorhizomorina Schrammen, 1901 Family Macandrewiidae Gray, 1859 [monotypic] 1 Genus †Macandrewia Gray, 1859