FAMILY                      Palaeobuthoideaincertae [Fossil]
GENUS                              Gymnoscorpius Jeram, 1994a:544  [Fossil]
SPECIES                                 Gymnoscorpius mutillidigitus Jeram, 1994a:544 [WestphalianFossil; u.Carb.; England]
GENUS                              Hubeiscorpio Walossek, Li & Brauckmann, 1990:169  [Fossil]
SPECIES                                 Hubeiscorpio gracilitarsus Walossek, Li & Brauckmann, 1990:169 [FrasnianFossil; u.Dev.; China]
GENUS                              Palaeomachus Pocock, 1911:16  [Fossil]
SPECIES                                 Palaeomachus anglicus (Woodward, 1876):57 [Fossil; u.Carb.; England]
                                        [=Eoscorpius anglicus Woodward, 1876]
GENUS                              Titanoscorpio Kjellesvig-Waering, 1986:240  [Fossil]
SPECIES                                 Titanoscorpio douglassi Kjellesvig-Waering, 1986:240 [PennsylvanianFossil; u.Carb.; Illinois]
GENUS                              Wattisonia Wills, 1960:319  [Fossil]
SPECIES                                 Wattisonia coseleyensis Wills, 1960:319 [Fossil; u.Carb.; England]