[Phylum] [Arthropoda] Siebold, 1848 - arthropods Chelicerata Heymons, 1901 Euchelicerata Weygoldt & Paulus, 1979 [Order] Scorpiones Koch, 1837 - scorpions [Suborder] †Holosternina Kjellesvig-Waering, 1986 Superfamily †Gigantoscorpionoidea Kjellesvig-Waering, 1986 [monotypic] Family †Gigantoscorpionidae Kjellesvig-Waering, 1986 Genus †Gigantoscorpio Størmer, 1963