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 †Stringocephaloidea King, 1850 Family †Meganterididae Schuchert & LeVene, 1929