Full reference: M. J. Rathbun. 1917. New Species of South Dakota Cretaceous Crabs. Proceedings of the United States National Museum 52(2182):385-391
Parent taxon: Brachyura according to C. E. Schweitzer et al. 2010
Sister taxa: Bellioidea, Brachyrhyncha, Bythograeoidea, Cancroidea, Componocancroidea, Cryptochiroidea, Cyclodorippoidea, Dairoidea, Dromiacea, Dromioidea, Eubrachyura, Gecarcinucoidea, Glaessneropsoidea, Goneplacoidea, Grapsoidea, Homolodromioidea, Homoloidea, Konidromitoidea, Leucosioidea, Marocarcinidae, Mcrocarcinidae, Ocypodoidea, Oxystomata, Palicoidea, Parthenopoidea, Pilumnoidea, Pilumnoidoidea, Pinnotheroidea, Pisidae, Portunoidea, Potamoidea, Potamonautidae, Pseudothelphusoidea, Retroplumoidea, Rioarribia, Trichodactyloidea
Subtaxa: Dakoticancridae, Ibericancridae
Ecology: epifaunal carnivore