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 †Thaumastocoeliidae Ott, 1967
           1 Genus †Porefieldia Rigby & Potter, 1986
           2 Genus †Pseudoporefieldia Rigby, Potter & Blodgett, 1988
           3 ?Genus †Follicatena Ott, 1967
           4 Genus †Thaumastocoelia Steinmann, 1882
           5 Genus †Pamirothalamia Boiko, 1991
           6 Genus †Pamiroverticillites Boiko, 1991
           7 Genus †Sphaeroverticillites Boiko, 1990