[Arthropoda] Siebold, 1848 - arthropods see Phylum Arthropoda Siebold, 1848
Count: -
   Arachnomorpha Heider, 1913
  Count: †2f;25g
     †Trilobitomorpha Størmer, 1944 see Superclass Trilobitomorpha Størmer, 1944
    Count: †2f;15g
       †Helmetiida Novozhilov, 1969 see Order Helmetiida Novozhilov, 1969
      Count: †1f;5g
         Genus †Saperion Hou et al., 1991
        Count: -