Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order Thecideida Pajaud, 1970
         Superfamily †Thecospiroidea Bittner, 1890
           1 Family †Thecospiridae Bittner, 1890
           2 Family †Thecospirellidae Dagys, 1972
           3 Family †Hungarithecidae Dagys, 1972