Family Pisidae Dana 1851 (crab)
Parent taxon: Brachyura according to S. Casadio et al. 2005
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, Portunoidea, Potamoidea, Potamonautidae, Pseudothelphusoidea, Retroplumoidea, Rioarribia, Trichodactyloidea
Subtaxa: none
Ecology: epifaunal carnivore