Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Uropygi Thorell, 1882 Order Thelyphonida Latreille, 1804 [monotypic] Family Thelyphonidae Lucas, 1835