†Macrophthalmus (Euplax) Milne Edwards 1852 (crab)
Malacostraca - Decapoda - Macrophthalmidae
Alternative spelling: Euplax
Parent taxon: Macrophthalmus according to H. Karasawa 1993
Sister taxa: Macrophthalmus (Hemiplax), Macrophthalmus (Mareotis), Macrophthalmus aquensis, Macrophthalmus depressus, Macrophthalmus latifrons, Macrophthalmus latreillei, Macrophthalmus leptophthalmus, Macrophthalmus serratus, Macrophthalmus setosus, Macrophthalmus viai
Subtaxa: none
Ecology: infaunal detritivore
Distribution: found only at Nakoji (Quaternary of Japan)