Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order †Atrypida Rzhonsnitskaya, 1960
         1 Suborder †Atrypidina Moore, 1952
         2 Suborder †Anazygidina Copper, 1996
         3 Suborder †Davidsoniidina Copper, 1996
         4 Suborder †Lissatrypidina Copper, 1996