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 †Redlichiida Richter, 1932
           Suborder †Redlichiina Richter, 1932 [paraphyletic]
             Superfamily †Paradoxidoidea Hawle & Corda, 1847
               1 Family †Centropleuridae Angelin, 1854
               2 Family †Paradoxididae Hawle & Corda, 1847
               3 Family †Xystriduridae Whitehouse, 1939