Order Leptostraca Claus 1880 (crustacean)
PaleoDB taxon number: 22221
Parent taxon: Phyllocarida according to J. W. Martin and G. E. Davis 2001
Sister taxa: Aptychopsis, Archaeostraca, Caryocarididae, Discinocaris, Peltocaris, Phasganocaris, Proboscicaris, Protocimex, Tuzoia
Subtaxa: Levinebalia, Rhabdouraeidae
Ecology: nektobenthic carnivore