Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class †Strophomenata Williams et al, 1996
       Order †Strophomenida Opik, 1934
         Superfamily †Plectambonitoidea Jones, 1928
           01 Family †Plectambonitidae Kozlowski, 1929
           02 Family †Taffiidae Schuchert & Cooper, 1931
           03 Family †Bimuriidae Cooper, 1956
           04 Family †Syndielasmatidae Cooper, 1956
           05 Family †Leptellinidae Ulrich & Cooper, 1936
           06 Family †Grorudiidae Cocks & Rong, 1989
           07 Family †Leptestiidae Opik, 1933
           08 Family †Xenambonitidae Cooper, 1956
           09 Family †Hesperomenidae Cooper, 1956
           10 Family †Sowerbyellidae Opik, 1930