Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order †Protorthida Schuchert & Cooper, 1931 Superfamily †Skenidioidea Kozlowski, 1929 1 Family †Skenidiidae Kozlowski, 1929