Kingdom Animalia Linnaeus, 1758 - animals Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order "Lithistida" Schmidt, 1870 [polyphyletic] - lithistids see Subclass Lithistida Schmidt, 1870 Family Scleritodermidae Sollas, 1888 see Family Scleritodermatidae Sollas, 1888