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 †Corynexochida Kobayashi, 1935
           Suborder †Leiostegiina Bradley, 1925
             1 Family †Illaenuridae Vogdes, 1890
             2 Family †Kaolishaniidae Kobayashi, 1955
             3 Family †Leiostegiidae Bradley, 1925
             4 Family †Shirakiellidae Hupé, 1953