life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Arthropoda Siebold, 1848 - arthropods
     Class Arachnida Lamarck, 1801
       1 Micrura Hansen & Sørensen, 1904
       2 Dromopoda Shultz, 1990 see Subclass Dromopoda Shultz, 1990