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]
Atoposyphronida Dunlop, Penney & Jekel, 2020, orth. inval.
see Suborder Atoposphyronida Harvey, 2019
Count: [g†g] 2f;2g; †1g [8 Jan 2021]
Superfamily Feaelloidea Ellingsen, 1906
Count: [g†g] 2f;2g; †1g [8 Jan 2021]
Family Feaellidae Ellingsen, 1906
Count: [g†g] 1g; †1g [8 Jan 2021]
Genus Feaella Ellingsen, 1906
Count: -
1 Subgenus Feaella (Tetrafeaella) Beier, 1955
Count: -