Phylum Arthropoda Siebold, 1848 - arthropods
   Subphylum †Artiopoda Hou & Bergström, 1997
     †Nektaspidida (Raymond, 1920)
       Genus †Naraoia Walcott, 1912 [paraphyletic]
         1 †Naraoia spinosa Zhang & Hou, 1985
         2.1 †Naraoia compacta Walcott, 1912