[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 Pseudotanaidae Sieg, 1976
           Subfamily Pseudotanainae (Sieg, 1976) Sieg, 1977 see Family Pseudotanaidae Sieg, 1976
             1 Genus Mystriocentrus Bird & Holdich, 1989
             2 Genus Parapseudotanais Bird & Holdich, 1989
             3 Genus Pseudotanais G.O. Sars, 1882