Order Scorpiones Latreille 1817 (scorpion)
Parent taxon: Stomothecata according to J. W. Shultz 2007
See also Fritsch 1904, Jeram 1994 and Sepkoski 2002
Sister taxon: Opiliones
Subtaxa: Allopalaeophonoidea Archaeoctonoidea Bilobosternina Branchioscorpionina Brontoscorpio Chaerilobuthidae Eramoscorpius Gondwanascorpio Gymnoscorpius Holosternina Hubeiscorpio Liassoscorpionidae Liassoscorpionides Lobosternina Meristosternina Mesoscorpionina Orthosternina Palaeomachus Palaeophonus lightbodyi Palaeotrilineatidae Permomatveevia Proscorpiidae Titanoscorpio Wattisonia
Ecology: