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 †Mesoprosopidae Glaessner, 1928 Genus †Mesoprosopon Stolley, 1914 1 †Mesoprosopon triasinum Stolley, 1915