Phylum Porifera Grant, 1836 - sponges
   Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
     Subclass Ceractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
       Order †Agelasida Hartman, 1980
         Family †Angullongiidae Webby & Rigby, 1985
           1 Genus †Alaskaspongia Rigby, Potter & Blodgett, 1988
           2 Genus †Amblysiphonelloides Rigby & Potter, 1986
           3 Genus †Angullongia Webby & Rigby, 1985
           4 Genus †Belubulaia Webby & Rigby, 1985
           5 Genus †Nibiconia Rigby & Webby, 1988