Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Rhynchonelliformea Williams et al., 1996 Class †Strophomenata Williams et al, 1996 Order †Productida Sarycheva & Sokolskaya, 1959 Suborder †Strophalosiidina Schuchert, 1913 Superfamily †Richthofenioidea Waagen, 1885 Family †Gemmellaroiidae (Williams, 1953)