Arthropoda Siebold, 1848 - arthropods
   [Euarthropoda]
     Class Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
       Labrophora Siveter, Waloszek & Williams
         Order †Phosphatocopida Müller, 1964
           †Euphosphatocopida
             Suborder †Hesslandonina Müller, 1982
               1 †Hesslandona angustata Maas, Waloszek & Müller, 2003
               2.1.1 Genus †Waldoria Gründel, in Gründel & Buchholz, 1981
               2.1.2 Family †Cyclotronidae Grundel, 1981
               2.2.1 †Hesslandona unisulcata Müller, 1982
               2.2.2 Genus †Trapezilites Hinz-Schallreuter, 1993
               3 Family †Hesslandonidae Müller, 1964