[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Scorpiones Koch, 1837 - scorpions
         01 [plesion] Family †Proscorpiidae Scudder, 1885
         02 Suborder †Bilobosternina Kjellesvig-Waering, 1986
         03 [Suborder] †Holosternina Kjellesvig-Waering, 1986
         04 [Suborder] †Meristosternina Kjellesvig-Waering, 1986
         05 [Suborder] †Lobosternina Pocock, 1911
         06 Suborder Neoscorpionina Thorell & Lindström, 1885
         07 Genus †Brontoscorpio Kjellesvig-Waering, 1972, incertae sedis
         08 Genus †Eramoscorpius Waddington, Rudkin & Dunlop, 2015, incertae sedis
         09 Genus †Gondwanascorpio Gess, 2013, incertae sedis
         10 Genus †Hubeiscorpio Walossek, Li & Brauckmann, 1990, incertae sedis
         11 Genus †Liassoscorpionides Bode, 1951, incertae sedis
         12 Genus †Palaeomachus Pocock, 1911, incertae sedis
         13 Genus †Permomatveevia Dammann, 2017, incertae sedis
         14 Genus †Titanoscorpio Kjellesvig-Waering, 1986, incertae sedis
         15 Genus †Wattisonia Wills, 1960, incertae sedis