Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order †Spiriferida Waagen, 1883
         Suborder †Spiriferidina Waagen, 1883
           Superfamily †Spiriferoidea King, 1846
             1 Family †Spiriferidae King, 1846
             2 Family †Choristitidae Waterhouse, 1968
             3 Family †Imbrexiidae (Carter, 1992)
             4 Family †Trigonotretidae Schuchert, 1893
             5 Family †Spiriferellidae Waterhouse, 1968