Kingdom Animalia Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Superclass Crustacea Pennant, 1777 - crustaceans see [unranked] Crustaceomorpha Chernyshev, 1960 Class Ostracoda Latreille, 1802 - ostracods Order Palaeocopida Henningsmoen, 1953 see Suborder Palaeocopina Henningsmoen, 1953 Genus †Tvaerenella Jaanusson, 1957