Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges 1 Subclass Homoscleromorpha Lévi, 1973 see Class Homoscleromorpha Dendy, 1905 2 Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 3 Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885