Phylum Schizoramia Bergström, 1976a see Phylum Arthropoda Siebold, 1848 Superclass Crustaceomorpha Chernyshev, 1960 see [unranked] Crustaceomorpha Chernyshev, 1960 Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777 ?Order †Isoxyida Simonetta & Delle Cave, 1975 Family †Isoxyidae Vogdes, 1893