[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
           Section Eucoelomata see Superphylum Eucoelomata
             Phylum Arthropoda Siebold, 1848 - arthropods
               Subphylum Chelicerata Heymons, 1901
                 Class Arachnida Lamarck, 1801
                   01 Order Scorpionida Latreille, 1817 see Class Scorpionida Latreille, 1810
                   02 Order Uropygi Thorell, 1882 - whip scorpions see [unranked] Uropygi Thorell, 1882
                   03 Order Amblypygi Thorell, 1883 - whip spiders
                   04 Order Palpigrada see Order Palpigradi Thorell, 1888
                   05 Order Araneae Clerck, 1757 - spiders
                   06 Order Solpugida - solpugids see Order Solifugae Sundevall, 1833
                   07 Order Pseudoscorpionida Latreille, 1817 - false scorpions see Order Pseudoscorpiones De Geer, 1778
                   08 Order Ricinulei Thorell, 1876 - ricinuleids
                   09 Order Opiliones Sundevall, 1833 - harvestmen
                   10 Order Acarina Baraud, 1965 see Order Acari Leach, 1817