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]
             1 Superfamily †Ellipsocephaloidea Matthew, 1887
             2 Superfamily †Emuelloidea Pocock, 1970 [monotypic]
             3 Superfamily †Paradoxidoidea Hawle & Corda, 1847
             4 Superfamily †Redlichioidea Poulsen, 1927