Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
   Subclass Branchiura Thorell, 1864 - fish lice
     Order †Cyclida Schram, Vonk & Hof, 1997, nom. corr.
       Genus †Apionicon Schram, Vonk & Hof, 1997
         1 †Apionicon apioides Schram, Vonk & Hof, 1997