Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order †Spiriferida Waagen, 1883 Suborder †Delthyridina Ivanova, 1972 Superfamily †Reticularioidea Waagen, 1883 Family †Elythidae Fredericks, 1924