Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass †Lithistida Schmidt, 1870
       Order †Orchocladina Rauff, 1895
         Family †Streptosolenidae Johns, 1994
           01 Genus †Gallatinospongia Okulitch & Bell, 1955
           02 ?Genus †Orlinocyathus Krasnopeeva, 1962
           03 Genus †Wilbernicyathus Wilson, 1950
           04 Genus †Allosaccus Raymond & Okulitch, 1940
           05 Genus †Aulocopella Rauff, 1895
           06 Genus †Edriospongia Miller, 1889
           07 Genus †Eospongia Billings, 1861
           08 Genus †Hesperocoelia Bassler, 1927
           09 Genus †Hudsonospongia Raymond & Okulitch, 1940
           10 Genus †Lissocoelia Bassler, 1927
           11 ?Genus †Ozarkocoelia Cullison, 1944
           12 Genus †Streptosolen Miller, 1889
           13 Genus †Verpaspongia Johns, 1994
           14 Genus †Aulocopium Oswald, 1847
           15 Genus †Perissocoelia Rigby & Webby, 1988
           16 Genus †Antrospongia Rigby & Chatterton, 1989
           17 Genus †Dendroclonella Rauff, 1895
           18 Genus †Aulocopoides Howell, 1952