Full reference: L. F. Rinehart, S. G. Lucas, and A. B. Heckert. 2003. An early brachyuran (Malacostraca: Decapoda) from the Upper Triassic Snyder Quarry, Petrified Forest Formation, north-central New Mexico. In K. E. Ziegler, A. B. Heckert, & S. G. Lucas (eds.), Paleontology and Geology of the Upper Triassic (Revueltian) Snyder Quarry, New Mexico. New Mexico Museum of Natural History and Science Bulletin 24:67
Parent taxon: Brachyura according to L. F. Rinehart et al. 2003
Sister taxa: Bellioidea, Brachyrhyncha, Bythograeoidea, Cancroidea, Componocancroidea, Cryptochiroidea, Cyclodorippoidea, Dairoidea, Dakoticancroidea, 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, Trichodactyloidea
Subtaxa: Rioarribia schrami
Type: Rioarribia schrami
Ecology: epifaunal carnivore