[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Scorpiones Koch, 1837 - scorpions
         [Suborder] †Holosternina Kjellesvig-Waering, 1986
           Superfamily †Eoctonoidea Kjellesvig-Waering, 1986
             1 Family †Allobuthiscorpiidae Kjellesvig-Waering, 1986
             2 Family †Anthracoscorpionidae Fritsch, 1904
             3 Family †Buthiscorpiidae Kjellesvig-Waering, 1986 [monotypic]
             4 Family †Eoctonidae Kjellesvig-Waering, 1986 [monotypic]
             5 Family †Garnettiidae Dubinin, 1962 [monotypic]