Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order †Spiriferida Waagen, 1883
         Suborder †Delthyridina Ivanova, 1972
           Superfamily †Reticularioidea Waagen, 1883
             1 Family †Reticulariidae Waagen, 1883
             2 Family †Xenomartiniidae Havlicek, 1971
             3 Family †Thomasariidae Cooper & Dutro, 1982
             4 Family †Elythidae Fredericks, 1924