Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order Streptosclerophorida Dendy, 1924 Suborder †Eutaxicladina Rauff, 1894 [monotypic]