Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order Rhynchonellida Kuhn, 1949 Superfamily †Stenoscismatoidea Oehlert, 1887 Family †Stenoscismatidae Oehlert, 1887