[Bilateria] Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
   ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval.
     Arthropoda Siebold, 1848 - arthropods
       Arachnomorpha Heider, 1913
         †Trilobitomorpha Størmer, 1944 see Superclass Trilobitomorpha Størmer, 1944
           Subclass †Concilioterga nom. null. see Subclass Conciliterga Hou & Bergström, 1997
             Order †Helmetiida Novozhilov, 1969
               1 Genus †Helmetia Walcott, 1918
               2 Genus †Kuamaia Hou, 1987
               3.1 Genus †Saperion Hou et al., 1991
               3.2 Genus †Tegopelte Simonetta & Delle Cave, 1975