Arthropoda Siebold, 1848 - arthropods
Count: -
   Euarthropoda
  Count: -
     Subphylum Chelicerata Heymons, 1901
    Count: -
       Euchelicerata Weygoldt & Paulus, 1979
      Count: -
         Prosomapoda Lamsdell, 2013
        Count: -
           Xiphosura Latreille, 1802 - horseshoe crabs
          Count: -
             Order Xiphosurida Latreille, 1802
            Count: †3g
               Limulina Richter & Richter, 1929
              Count: -