Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order †Permosphincta Termier & Termier, 1974 Suborder †Aporata Seilacher, 1962 Family †Pisothalamiidae Senowbari-Daryan & Rigby, 1988 see Family Celyphiidae de Laubenfels, 1955 Genus †Pisothalamia Senowbari-Daryan & Rigby, 1988