Class Scorpionida Latreille, 1810 - scorpions
   Order †Palaeoscorpiones (Stockwell, 1989)
     Superfamily †Proscorpioidea Scudder, 1885
       1 Genus †Proscorpius Whitfield, 1885
       2 Genus †Archaeophonus Kjellesvig-Waering, 1966 see Genus Proscorpius Whitfield, 1885
       3 Genus †Waeringoscorpio Størmer, 1970
       4 Genus †Labriscorpio Leary, 1980
       5 Genus †Stoermeroscorpio Kjellesvig-Waering, 1986 see Genus Proscorpius Whitfield, 1885