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 Acarniidae de Laubenfels, 1936 see Family Myxillidae Lundbeck, 1905 Genus †Acanthoraphis Hinde, 1883