Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Order Pseudoscorpiones De Geer, 1778 Suborder Epiocheirata Harvey, 1992 1 Superfamily Chthonioidea Daday, 1888 2 Superfamily Feaelloidea Ellingsen, 1906