[Phylum] [Arthropoda] Siebold, 1848 - arthropods Chelicerata Heymons, 1901 Euchelicerata Weygoldt & Paulus, 1979 [Order] Scorpiones Koch, 1837 - scorpions Suborder †Bilobosternina Kjellesvig-Waering, 1986 1 Superfamily †Branchioscorpionoidea Kjellesvig-Waering, 1986