[Kingdom] Animalia Linnaeus, 1758 - animals Grade Enterozoa Grade Cœlomata Phylum Appendiculata {Lankester} Branch Gnathopoda Straus-Durkheim, 1829 Grade Condylopoda Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777 Grade Malacostraca Latreille, 1802 Branch Thoracostraca Order Cumacea Krøyer, 1846 - cumaceans Genus Diastylis Say, 1818