Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum †Trilobitomorpha Størmer, 1944 - trilobites see Superclass Trilobitomorpha Størmer, 1944 Class †Trilobita Walch, 1771 - trilobites Order †Asaphida Salter, 1864 Superfamily †Trinucleoidea Hawle & Corda, 1847 Family †Dionididae Gürich, 1907