Superorder Eucarida Calman 1904 (crustacean)
Parent taxon: Malacostraca according to J. W. Martin and G. E. Davis 2001
Sister taxa: Aeschronectida, Belotelsonidea, Cumacea, Eocaridacea, Eumalacostraca, Hoplocarida, Hoplostraca, Hymenostraca, Isopoda, Lophogastrida, Palaeocaridacea, Palaeostomatopoda, Phyllocarida, Silesicaris, Tanaidacea, Waterstonellidea
Subtaxa: Amphionidacea, Decapoda, Euphausiacea
Ecology: epifaunal omnivore