Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885 Order Sigmatosclerophorida Burton, 1956 [paraphyletic?]