Brachiopoda Duméril, 1806 - brachiopods Rhynchonelliformea Williams et al., 1996 Rhynchonellata Williams et al., 1996 Rhynchonellida Kuhn, 1949 Hemithiridoidea Rzhonsnitskaya, 1956 ?†Septirhynchiidae Muir-Wood & Cooper, 1951