Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Uropygi Thorell, 1882 see Order Uropygi Thorell, 1882 1 Order Thelyphonida Latreille, 1804 [monotypic] see Order Uropygi Thorell, 1882 2 Order Schizomida Petrunkevitch, 1945 - schizomids