[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Subclass] Acari Leach, 1817 - mites and ticks
         [Order] Acariformes Zakhvatkin, 1952 see Superorder Acariformes Zakhvatkin, 1952
           Suborder Trombidiformes Reuter, 1909 see Order Trombidiformes Reuter, 1909
             Infraorder Prostigmata Kramer, 1877 see Suborder Prostigmata Kramer, 1877
               Supercohort Eleutherengonides Oudemans, 1909 see Infraorder Eleutherengona Oudemans, 1909
                 Cohort Heterostigmata Berlese, 1899 see Hyporder Heterostigmata Berlese, 1899
                   1 Superfamily †Nasutiacaroidea Sidorchuk & Lindquist, 2015 [monotypic]
                   2 Superfamily Tarsocheyloidea Atyeo & Baker, 1964 [monotypic]
                   3 Superfamily Heterocheyloidea Trägårdh, 1950 [monotypic]
                   4 Superfamily Dolichocyboidea Mahunka, 1970
                   5 Superfamily Trochometridioidea Mahunka, 1970
                   6 Superfamily Scutacaroidea Oudemans, 1916
                   7 Superfamily Pygemephoroidea Kethley, 1982, orth. inval. see Superfamily Pygmephoroidea Cross, 1965
                   8 Superfamily Pyemotoidea Oudemans, 1937
                   9 Superfamily Tarsonemoidea Canestrini & Fanzago, 1877