Arthropoda Siebold, 1848 - arthropods
   Euarthropoda
     1 Antennata see [unranked] Antennulata
     2 †megacheirans Hou & Bergström, 1997 [paraphyletic] see Class Megacheira Hou & Bergström, 1997
     2.n Subphylum Chelicerata Heymons, 1901