Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order Terebratulida Waagen, 1883 Suborder Terebratulidina Waagen, 1883 Superfamily Cancellothyridoidea Thomson, 1926 Family Cnismatocentridae Cooper, 1973