Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Superclass Chelicerata Heymons, 1901 see Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Order †Kustarachnida Petrunkevitch, 1913 see Order Opiliones Sundevall, 1833