Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order †Spiriferinida Ivanova, 1972
         Suborder †Cyrtinidina Carter & Johnson, 1994
           Superfamily †Suessioidea Waagen, 1883
             1 Family †Davidsoninidae Ivanova, 1972
             2 Family †Laballidae Dagys, 1962
             3 Family †Bittnerulidae Schuchert, 1929
             4 Family †Suessiidae Waagen, 1883