Class Scorpionida Latreille, 1810 - scorpions
   Order †Protoscorpiones Petrunkevitch, 1949
     1 Genus †Palaeophonus Thorell & Lindström, 1884
     2 Genus †Allopalaeophonus Kjellesvig-Waering, 1986
     3 Genus †Dolicophonus Petrunkevitch, 1949
     4 Genus †Palaeoscorpius Lehmann, 1944