Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class †Strophomenata Williams et al, 1996 Order †Productida Sarycheva & Sokolskaya, 1959 Suborder †Productidina Waagen, 1883 Superfamily †Echinoconchoidea Stehli, 1954 1 Family †Echinoconchidae Stehli, 1954 2 Family †Sentosiidae McKellar, 1970