[Phylum] [Arthropoda] Siebold, 1848 - arthropods Chelicerata Heymons, 1901 Euchelicerata Weygoldt & Paulus, 1979 [Order] Scorpiones Koch, 1837 - scorpions [Suborder] †Meristosternina Kjellesvig-Waering, 1986 Superfamily †Cyclophthalmoidea Thorell & Lindström, 1885 Family †Cyclophthalmidae Thorell & Lindström, 1885 [monotypic] 1 Genus †Cyclophthalmus Corda, 1835