Phylum Euarthropoda Lankester, 1904 see [unranked] Euarthropoda
Count: †2c;3f;26g;9s
   Subphylum †Artiopoda Hou & Bergström, 1997
  Count: †2c;3f;26g;9s
     Superclass †Trilobitomorpha Størmer, 1944
    Count: †2c;3f;22g;9s
       Class †Nektaspida Raymond, 1920
      Count: †2f;13g;9s
         Subclass †Petalopleura Hou & Bergström, 1997
        Count: †2g
           1 Genus †Cindarella Chen et al., 1996
          Count: -
           2 Genus †Xandarella Hou et al., 1991
          Count: -