Subclass Acari Leach, 1817 - mites and ticks Superorder Acariformes Zakhvatkin, 1952 - mitelike mites Order Sarcoptiformes Reuter, 1909 Suborder Oribatida van der Hammen, 1968 - oribatid mites Supercohort Palaeosomatides see Infraorder Palaeosomata Grandjean, 1969 1 Superfamily Acaronychoidea Grandjean, 1932 2 Superfamily Palaeacaroidea Grandjean, 1932 3 Superfamily Ctenacaroidea Grandjean, 1954 see Superfamily Palaeacaroidea Grandjean, 1932