Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       01 Order †Protorthida Schuchert & Cooper, 1931
       02 Order †Orthida Schuchert & Cooper, 1932
       03 Order †Pentamerida Schuchert & Cooper, 1931
       04 Order Rhynchonellida Kuhn, 1949
       05 Order †Atrypida Rzhonsnitskaya, 1960
       06 Order †Athyridida Boucot et al., 1964
       07 Order †Spiriferida Waagen, 1883
       08 Order †Spiriferinida Ivanova, 1972
       09 Order Thecideida Pajaud, 1970
       10 Order Terebratulida Waagen, 1883
       11 Family †Mongolellidae Alekseeva, 1976