Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class Rhynchonellata Williams et al., 1996 Order †Spiriferida Waagen, 1883 Suborder †Spiriferidina Waagen, 1883 Superfamily †Cyrtioidea Fredericks, 1919 1 Family †Cyrtiidae Fredericks, 1919 2 Family †Hedeinopsidae Gourvennec, 1990