life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Arthropoda Siebold, 1848 - arthropods
     Class Arachnida Lamarck, 1801
       Dromopoda Shultz, 1990 see Subclass Dromopoda Shultz, 1990
         Novogenuata Shultz, 1990
           1 Order Scorpiones Koch, 1837 - scorpions
           2 Haplocnemata Börner, 1904