Subfamily Lupocyclinae Paulson 1875 (swimming crab)
Malacostraca - Decapoda - Portunidae
Parent taxon: Portunidae according to C. E. Schweitzer et al. 2021
See also Karasawa et al. 2008 and Schweitzer et al. 2010
Sister taxa: Archaeoportunus, Arenaeinae, Carcinides, Carupinae, Enoplonotus, Lupinae, Necronectinae, Neptunus, Podophthalminae, Portuninae, Psammocarcininae, Thalamitinae
Subtaxa: Carupella Lupocyclus
Type: Lupocyclus
Ecology: semi-infaunal carnivore
Distribution: found only at Kamiyamaji (Pliocene of Japan)