Chelicerata Heymons, 1901
Count: 2c;12o; †6o;2f;23g
   Opiliones Sundevall, 1833 - harvestmen
  Count: [g†g] 49f;17g; †4f;22g [25 Jan 2021]
     Phalangida Bristowe, 1949
    Count: [g†g] 43f;16g; †4f;18g [25 Jan 2021]
       Suborder Laniatores Thorell, 1876 - armored harvestmen
      Count: [g†g] 29f;4g; †2g [25 Jan 2021]
         Infraorder Grassatores Kury, 2002
        Count: [g†g] 24f;3g; †1g [25 Jan 2021]
           Superfamily Gonyleptoidea Sundevall, 1833
          Count: [g] 6f [25 Jan 2021]
             Family Agoristenidae Šilhavý, 1973
            Count: -