Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order †Pentamerida Schuchert & Cooper, 1931
         Suborder †Syntrophiidina Ulrich & Cooper, 1936
           Superfamily †Camerelloidea Hall & Clarke, 1894
             1 Family †Camerellidae Hall & Clarke, 1894
             2 Family †Parastrophinidae Ulrich & Cooper, 1938
             3 Family †Parallelelasmatidae Cooper, 1956