Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order Terebratulida Waagen, 1883
         Suborder Terebratellidina Muir-Wood, 1955
           Superfamily Zeillerioidea Allan, 1940
             1 Family Zeilleriidae Allan, 1940
             2 Family †Gusarellidae Ovtsharenko, 1976
             3 Family †Eudesiidae Muir-Wood, 1965