Chelicerata Heymons, 1901 Scorpiones Koch, 1837 - scorpions Orthosternina Pocock, 1911 see Infraorder Orthosterni Pocock, 1911 Superfamily Buthoidea Koch, 1837 Family †Palaeoburmesebuthidae Lourenço, 2015 Genus †Spinoburmesebuthus Lourenço, 2017