[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
     Order Tanaidacea Dana, 1849 - tanaids
       Suborder Tanaidomorpha Sieg, 1980
         Family Leptocheliidae Lang, 1973
           1 Genus Heterotanais Sars, 1882
           2 Genus Leptochelia Dana, 1849
           3 Genus Mesotanais Dollfus, 1897
           4 Genus Pseudoleptochelia Lang, 1973