Chelicerata Heymons, 1901 Scorpiones Koch, 1837 - scorpions †Lobosternina Pocock, 1911 Superfamily †Isobuthoidea Petrunkevitch, 1913 Family †Eoscorpiidae Scudder, 1884 [Genus Eskioscorpio Dunlop, Brauckmann & Steur, 2008, orth. inval.] see Genus Eskiscorpio Kjellesvig-Waering, 1986