Chelicerata Heymons, 1901
Count: 2c;12o; †6o;2f;23g
   Pseudoscorpiones De Geer, 1778
  Count: [g†g] 26f;22g; †1f;13g [8 Jan 2021]
     Homosyphronida Dunlop, Penney & Jekel, 2020, orth. inval. see Group Homosphyronida Chamberlin, 1929
    Count: [g†g] 23f;17g; †10g [8 Jan 2021]
       Iochierata Dunlop, Penney & Jekel, 2010, orth. inval. see Suborder Iocheirata Harvey, 1992
      Count: [g†g] 21f;15g; †9g [8 Jan 2021]
         Panctenata Balzan, 1892
        Count: [g†g] 14f;12g; †9g [8 Jan 2021]
           Superfamily Cheiridioidea Hansen, 1894
          Count: [g†g] 2f;3g; †1g [8 Jan 2021]
             Family Cheiridiidae Hansen, 1894
            Count: [g†g] 2g; †1g [8 Jan 2021]
               Genus Cryptocheiridium Chamberlin, 1931
              Count: -