Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order †Spiriferinida Ivanova, 1972 1 Suborder †Cyrtinidina Carter & Johnson, 1994 2 Suborder †Spiriferinidina Ivanova, 1972