Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order Terebratulida Waagen, 1883
         Suborder Terebratulidina Waagen, 1883
           Superfamily Terebratuloidea Gray, 1840
             1 Family Terebratulidae Gray, 1840
             2 Family †Sellithyrididae Muir - Wood, 1965
             3 Family †Capillithyrididae Cooper, 1983
             4 Family †Weberithyrididae Smirnova, 1990
             5 Family †Gibbithyrididae Muir-Wood, 1965