Phylum Porifera Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges Order †Permosphincta Termier & Termier, 1974 Suborder †Porata Seilacher, 1962 Family †Polytholosiidae Seilacher, 1962 see Subfamily Polytholosiinae Seilacher, 1962 Genus †Nevadathalamia Senowbari-Daryan, 1990