| Former rank | : | Polycystina (Phylum) Ehrenberg, 1838 | |
Ref: M.S. Afanasieva & E.O. Amon, 2005: S213. [inferred] |
| Former rank | : | Polycystina (Class) Ehrenberg, 1838 | |
Ref: M.S. Afanasieva & E.O. Amon, 2005: S213. [inferred] |
| Former rank | : | Polycystina (Superorder) Ehrenberg, 1838 | |
Ref: M.S. Afanasieva & E.O. Amon, 2005: S213. [inferred] |
| Former rank | : | Polycystina (Order) Ehrenberg, 1838 | |
Ref: M.S. Afanasieva & E.O. Amon, 2005: S213. [inferred] |
| Current spelling | : | Polycystinia (Superclass) Ehrenberg, 1838 | |
Ref: T. Cavalier-Smith, 2018: table 1 (p. 308). [inferred] |