Menaethius Milne-Edwards 1834 (spider crab)
Crustacea - Decapoda - Majidae
PaleoDB taxon number: 275307
Parent taxon: Epialtinae according to G. C. B. Poore and S. Ahyong 2004
Sister taxa: Actinotocarcinus, Eoinachoides, Epialtus, Griffinia, Huenia, Nanomaja, Panticarcinus, Perinia, Pugettia
Subtaxa: Menaethius monoceros
Ecology: carnivore