Phylum Porifera Grant, 1836 - sponges
   Class Demospongiae Sollas, 1885 - demosponges
     Subclass "Sclerospongiae" Hartman & Goreau, 1970
       Order †Guadalupida Senowbari-Daryan, 1990 see Order Guadalupiida Termier & Termier, 1977
         Family †Guadalupiidae Girty, 1908
           1 Genus †Guadalupia Girty, 1908
           2 Genus †Lemonea Senowbari-Daryan, 1990
           3 ?Genus †Polysiphonia Finks, 1995, nom. illeg.