Parent taxon: Heterotremata according to J. Luque et al. 2017
See also Hyžný and Muller 2010, Nyborg et al. 2009, Schweitzer and Feldmann 2001, Schweitzer and Feldmann 2002, Schweitzer et al. 2010 and van Bakel et al. 2010
Sister taxa: Aethroidea, Archaeochiapasidae, Bellioidea, Bythograeoidea, Calappoidea, Cancroidea, Carpilioidea, Cheiragonoidea, Componocancroidea, Corystoidea, Dairoidea, Dorippoidea, Eriphioidea, Gecarcinucoidea, Goneplacoidea, Hexapodoidea, Hymenosomatoidea, Leucosioidea, Leucosoidea, Maioidea, Majoidea, Marocarcinidae, Montezumelloidea, Orithyioidea, Parthenopoidea, Pilumnoidea, Pilumnoidoidea, Portunoidea, Potamoidea, Progeryonoidea, Pseudothelphusoidea, Trichodactyloidea, Trichopeltarioidea, Xanthoidea
Subtaxa: Costacoplumidae Retroplumidae
Type: Retropluma
Ecology: epifaunal carnivore
Distribution:
• Miocene of Denmark (2 collections), Malaysia (5)
• Oligocene of Hungary (1)
• Eocene of Canada (1: British Columbia), France (1), Italy (6), Spain (4), United States (1: Alabama)
• Paleogene of Belgium (1)
• Paleocene of Argentina (2), United States (4: Alabama, California, California , Texas), Venezuela (1)
• Cretaceous of Canada (5: British Columbia), Japan (6), Mexico (9), Morocco (2), Nigeria (3), United States (7: Alaska, California, Mississippi, mississippi)
Total: 61 collections including 64 occurrences