Parent taxon: Heterotremata according to J. M. Wolfe et al. 2019
See also Feldmann and Keys 1992, Feldmann et al. 2003, Novack-Gottshall 2025, Samouelle 1819, Schweitzer and Feldmann 1999, Schweitzer and Feldmann 2002, Schweitzer et al. 2010, Stimpson 1862 and Todd and Collins 2005
Sister taxa: Aethroidea, Archaeochiapasidae, Bellioidea, Bythograeoidea, Calappoidea, Cancroidea, Carpilioidea, Cheiragonoidea, Componocancroidea, Corystoidea, Dairoidea, Dorippoidea, Eriphioidea, Gecarcinucoidea, Goneplacoidea, Hexapodoidea, Hymenosomatoidea, Leucosioidea, Leucosoidea, Maioidea, Marocarcinidae, Montezumelloidea, Orithyioidea, Parthenopoidea, Pilumnoidea, Pilumnoidoidea, Portunoidea, Potamoidea, Progeryonoidea, Pseudothelphusoidea, Retroplumoidea, Trichodactyloidea, Trichopeltarioidea, Xanthoidea
Subtaxa: Epialtidae Hymenosomidae Inachidae Inachoididae Macrocheiridae Majidae Oregoniidae Priscinachidae
Type: Maja
Ecology: epifaunal carnivore