Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Chelicerata Heymons, 1901 Class Arachnida Lamarck, 1801 Superorder Parasitiformes Reuter, 1909 - ticks and ticklike mites Order Holothyrida Thon, 1905 [monotypic] - holothyrans 1 Superfamily Holothyroidea Thorell, 1882