[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 Harpacticoida Sars, 1903
         Family Pseudotachidiidae Lang, 1936
           01 Genus Anapophysia Huys & Gee, 1996
           02 Genus Archisenia Huys & Gee, 1993
           03 Genus Bathypsammis Huys & Gee, 1993
           04 Genus Cylindronannopus Coull, 1973
           05 Genus Dactylopodella G.O. Sars, 1905
           06 Genus Danielssenia Boeck, 1873
           07 Genus Fladenia Gee & Huys, 1990
           08 Genus Idomene Philippi, 1843
           09 Genus Jonesiella Brady, 1880
           10 Genus Leptotachidia Becker, 1974
           11 Genus Micropsammis Mielke, 1975
           12 Genus Mucrosenia Gee & Huys, 1994
           13 Genus Paradanielssenia Soyer, 1970
           14 Genus Paranannopus Lang, 1936
           15 Genus Peltisenia Huys & Gee, 1996
           16 Genus Psammis G.O. Sars, 1910
           17 Genus Pseudomesochra Scott, 1902
           18 Genus Pseudotachidius T. Scott, 1897
           19 Genus Telopsammis Gee & Huys, 1991