Chelicerata Heymons, 1901 Scorpiones Koch, 1837 - scorpions †Lobosternina Pocock, 1911 Superfamily †Loboarchaeoctonoidea Kjellesvig-Waering, 1986 1 Family †Loboarchaeoctonidae Kjellesvig-Waering, 1986 [monotypic] 2 Family †Waterstoniidae Kjellesvig-Waering, 1986 [monotypic]