Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777 Subclass Branchiura Thorell, 1864 - fish lice Order †Cyclida Schram, Vonk & Hof, 1997, nom. corr. Family †Hemitrochiscidae Trauth, 1918 1 Genus †Hemitrochiscus Schauroth, 1854