Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order Rhynchonellida Kuhn, 1949 Superfamily †Rhynchoporoidea Muir-Wood, 1955 1 Family †Rhynchoporidae Muir-Wood, 1955