Phylum Porifera Grant, 1836 - sponges Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885 Subclass †Lithistida Schmidt, 1870 Order Spirosclerophorida Reid, 1963 Suborder Rhizomorina Zittel, 1895 Superfamily Azoricoidea Sollas, 1888 1 Family Azoricidae Sollas, 1888 2 Family †Cnemidiastridae Schrammen, 1924