Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Chelicerata Heymons, 1901
       Class Arachnida Lamarck, 1801
         Order Scorpiones Koch, 1837 - scorpions
           Suborder †Branchioscorpionina Kjellesvig-Waering, 1986
             Infraorder †Holosternina Kjellesvig-Waering, 1986 see 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
                 4 Family †Eoctonidae Kjellesvig-Waering, 1986
                 5 Family †Garnettiidae Dubinin, 1962