Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960
   Labrophora Siveter, Waloszek & Williams
     1 †Phosphatocopina Müller, 1964 see Order Phosphatocopida Müller, 1964
     2 Eucrustacea Kingsley, 1894