Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Superclass †Trilobitomorpha Størmer, 1944, stat. inval. see Superclass Trilobitomorpha Størmer, 1944 Class †Trilobita Walch, 1771 - trilobites Order †Agnostida Salter, 1864 Genus †Sphaeragnostus Cooper & Kindle, 1936