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 †Cryptonelloidea Thomson, 1926
             1 Family †Cranaenidae Cloud, 1942
             2 Family †Notothyrididae Licharew, 1960
             3 Family †Labaiidae Licharew, 1960
             4 Family †Cryptonellidae Thomson, 1926
             5 Family †Cimicinellidae Stehli, 1965