[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 Isopoda Latreille, 1817 - isopods
       Suborder Gnathiidea Hansen, 1916
         Family Gnathiidae Leach, 1814
           1 Genus Bathygnathia Dollfus, 1901
           2 Genus Caecognathia Dollfus, 1901
           3 Genus Elaphognathia Monod, 1926a
           4 Genus Gnathia Leach, 1814
           5 Genus Paragnathia Omer-Cooper & Omer-Cooper, 1916