Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order †Agelasida Hartman, 1980 Genus †Madonia Senowbari-Daryan & Schafer, 1986, incertae sedis