Full reference: A. I. Petrunkevitch. 1913. A monograph of the terrestrial Palaeozoic Arachnida of North America. Transactions of the Connecticut Acadamy of Arts and Sciences 18:1-137
Parent taxon: Lobosternina according to J. A. Dunlop et al. 2013
See also Kjellesvig-Waering 1986
Sister taxa: Anthracochaeriloidea, Loboarchaeoctonoidea, Palaeophonoidea, Paraisobuthoidea, Pseudobuthiscorpioidea
Subtaxa: Eobuthidae Eoscorpiidae Isobuthidae Kronoscorpionidae Pareobuthidae
Type: Isobuthus
Ecology:
Distribution:
• Miocene of United States (1: California collection)
• Triassic of France (6), the United Kingdom (1)
• Permian of China (1), France (1)
• Carboniferous of Canada (2: Nova Scotia), Czechia (4), France (1), Germany (2), the Netherlands (1), the United Kingdom (11), United States (8: Illinois, Indiana)
Total: 39 collections including 43 occurrences