Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Superclass Chelicerata Heymons, 1901 see Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Order Pseudoscorpionida Latreille, 1817 - false scorpions see Order Pseudoscorpiones De Geer, 1778