Chelicerata Heymons, 1901
   Pseudoscorpiones De Geer, 1778
     Heterosyphronida Dunlop, Penney & Jekel, 2020, orth. inval. see Suborder Heterosphyronida Chamberlin, 1929
       Superfamily Chthonoidea Dunlop, Penney & Jekel, 2010, orth. inval. see Superfamily Chthonioidea Daday, 1889
         Family Chthoniidae Daday, 1889
           Genus †Weygoldtiella Harvey, Cosgrove, Harms, Selden, Shih & Wang, 2018