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 †Syringothyridoidea Frederiks, 1926 Family †Dimegelasmidae Carter, 1994