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 †Dielasmatoidea Schuchert, 1913
             1 Family †Dielasmatidae Schuchert, 1913
             2 Family †Heterelasminidae Licharew, 1956
             3 Family †Beecheriidae Smirnova, 2004
             4 Family †Gillediidae Campbell, 1965
             5 Family †Pseudodielasmatidae Cooper & Grant, 1976
             6 Family †Angustothyrididae Dagys, 1972
             7 Family †Antezeilleridae
             8 Family †Zugmayeriidae Dagys, 1963
             9 Family †Juvavellidae Bittner, 1896