Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class †Strophomenata Williams et al, 1996
       Order †Strophomenida Opik, 1934
         Superfamily †Strophomenoidea King, 1846
           01 Family †Strophomenidae King, 1846
           02 Family †Rafinesquinidae Schuchert, 1893
           03 Family †Glyptomenidae Williams, 1965
           04 Family †Foliomenidae Williams, 1965
           05 Family †Christianiidae Williams, 1953
           06 Family †Leptaenoideidae (Williams, 1953)
           07 Family †Amphistrophiidae Harper, 1973
           08 Family †Douvillinidae Caster, 1939
           09 Family †Leptostrophiidae Caster, 1939
           10 Family †Eopholidostrophiidae Rong & Cocks, 1994
           11 Family †Strophodontidae Caster, 1939
           12 Family †Shaleriidae Williams, 1965
           13 Family †Strophonellidae Caster, 1939