Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order †Spiriferinida Ivanova, 1972 Suborder †Spiriferinidina Ivanova, 1972 Superfamily †Spiriferinoidea Davidson, 1884 1 Family †Spiriferinidae Davidson, 1884 2 Family †Sinucostidae Xu & Liu, 1983