Subfamily Necronectinae Glaessner 1928 (swimming crab)
Crustacea - Decapoda - Portunidae
PaleoDB taxon number: 225522
Parent taxon: Portunidae according to J. Luque et al. 2017
Sister taxa: Arenaeinae, Atoportuninae, Caphyrinae, Carcinides, Carupinae, Enoplonotus, Eocharybdis, Lessinithalamita, Lupinae, Lupocyclinae, Neptocarcinus, Neptunus, Pheophthalmus, Podopthalminae, Portuninae, Psammocarcininae, Thalamitinae
Subtaxa: Necronectes, Sanquerus, Scylla
Ecology: carnivore