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 1 Superfamily †Syringothyridoidea Frederiks, 1926 2 Superfamily †Pennospiriferinoidea Dagys, 1972 3 Superfamily †Spiriferinoidea Davidson, 1884