[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Crustacea (Brünnich, 1772) - crustaceans see Superclass Crustacea Pennant, 1777
     Subclass Copepoda H. Milne-Edwards, 1840 - copepods
       Order Calanoida Sars, 1903
         Family Megacalanidae Sewell, 1947
           1 Genus Bathycalanus G.O. Sars, 1905
           2 Genus Bradycalanus A. Scott, 1909
           3 Genus Megacalanus Wolfenden, 1904