Class Scorpionida Latreille, 1810 - scorpions
Order Scorpiones Koch, 1837 - scorpions
Suborder †Mesoscorpionina (Stockwell, 1989)
01 Genus †Mesophonus Wills, 1910
02 Genus †Mazonia Meek & Worthen, 1868
03 Genus †Heloscorpio Kjellesvig-Waering, 1986
04 Genus †Phoxiscorpio Kjellesvig-Waering, 1986
05 Genus †Isobuthus Fritsch, 1904
06 Genus †Eobuthus Fritsch, 1904
07 Genus †Eoscorpius Meek & Worthen, 1868
08 Genus †Pareobuthus Wills, 1959
09 Genus †Kronoscorpio Kjellesvig-Waering, 1986
10 Genus †Paraisobuthus Kjellesvig-Waering, 1986
11 Genus †Telmatoscorpio Kjellesvig-Waering, 1986