Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order Rhynchonellida Kuhn, 1949
         Superfamily †Uncinuloidea Rzonsnitskaya, 1956
           1 Family †Uncinulidae Rzonsnitzkaja, 1956
           2 Family †Eatoniidae Schmidt, 1965
           3 Family †Hebetoechiidae Havlicek, 1960
           4 Family †Obturamentellidae Savage, 1996
           5 Family †Innaechiidae Baranov, 1980
           6 Family †Glossinotoechiidae Havlicek, 1992
           7 Family †Hypothyridinidae Rzhonsnitskaia, 1956
           8 Family †Hadrorhynchiidae McLaren, 1965