Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order †Permosphincta Termier & Termier, 1974 Suborder †Porata Seilacher, 1962 Family †Phragmocoeliidae Ott, 1974 Genus †Radiothalamos Pickett & Rigby, 1983