Phylum Brachiopoda Duméril, 1806 - brachiopods Subphylum Linguliformea Williams et al., 1996 Class †Paterinata Williams et al, 1996 Order †Paterinida Rowell, 1965 Superfamily †Paterinoidea Schuchert, 1893 Family †Cryptotretidae Pelman, 1979