Phylum Brachiopoda Duméril, 1806 - brachiopods
   Subphylum Rhynchonelliformea Williams et al., 1996
     Class Rhynchonellata Williams et al., 1996
       Order Terebratulida Waagen, 1883
         Suborder Terebratulidina Waagen, 1883
           Superfamily †Loboidothyridoidea Makridin, 1964
             01 Family †Loboidothyrididae Makridin, 1964
             02 Family †Plectoconchidae Dagys, 1974
             03 Family †Triadithyrididae (Pearson, 1977)
             04 Family †Boreiothyrididae Dagys, 1968
             05 Family †Cheirothyropsidae Cooper, 1983
             06 Family †Cheniothyrididae Muir-Wood, 1965
             07 Family †Dictyothyrididae (Makridin, 1964)
             08 Family †Dienopidae Cooper, 1983
             09 Family †Hesperithyrididae Cooper, 1983
             10 Family †Lissajousithyrididae Cooper, 1983
             11 Family †Lobothyrididae Makridin, 1964
             12 Family †Muirwoodellidae Tchorzhevsky, 1974
             13 Family †Postepithyrididae Tchorzhevsky, 1974
             14 Family †Tchegemthyrididae
             15 Family †Tegulithyrididae Muir-Wood, 1965
             16 Family †Alabushevothyrididae Smirnova, 1994
             17 Family †Clathrithyrididae Smirnova, 1974
             18 Family †Harpotothyrididae Smirnova, 1990
             19 Family †Mametothyrididae Smirnova & Lee, 2006
             20 Family †Spasskothyrididae Smirnova, 1977
             21 Family †Trigonithyrididae Radulovic, 1986