[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
       1.1 Genus †Fuxianhuia Hou, 1987
       1.2 Genus †Canadaspis Novozhilov, in Orlov, 1960
       1.3.1 Genus †Yohoia Walcott, 1912
       1.3.2.1 crustaceans see Superclass Crustacea Pennant, 1777
       1.3.2.2 hexapods see Superclass Hexapoda Latreille, 1825
       2 Arachnomorpha Heider, 1913