Porifera Grant, 1836 - sponges Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 †Lithistida Schmidt, 1870 Spirosclerophorida Reid, 1963 Rhizomorina Zittel, 1895 Scleritodermatoidea Sollas, 1888 †Perimera Pomel, 1872