Concise hierarchy

(Kingdom) Chromista - (Phylum) Retaria - (Class) Polycystinea

Current position

Polycystinea (Class) Ehrenberg, 1838

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 21).

Alternative positions

Polycystina (Class) Ehrenberg, 1838	Ref: O.R. Anderson et al., 2000: 998.
Polycystina (Superorder) Ehrenberg, 1838	Ref: P. De Wever et al., 2001: 107. [emended diagnosis]
Radiolaria (Class) Müller, 1858	Ref: J.J. Sepkoski Jr., 2002

Historical positions

Polycystinea (Class) Ehrenberg, 1838	Ref: D. Lazarus et al., 2015: table 1 (p. 306).
Polycystinea (Class) Ehrenberg, 1838	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 21).
Radiolaria (Class) Müller, 1858	Ref: J.J. Sepkoski Jr., 2002: 10.
Polycystina (Superorder) Ehrenberg, 1838	Ref: P. De Wever et al., 2001: 107. [emended diagnosis]
Polycystina (Class) Ehrenberg, 1838	Ref: O.R. Anderson et al., 2000: 998.
Polycystina (Class) Ehrenberg, 1838	Ref: L. Margulis & K.V. Schwartz, 1982: 108.

Number of Subtaxa

2025	Available in Systema Naturae 2000	2f;13g;41s;4ss; †1f
1989-present	Systema Naturae 2000: 18 Aug 2018	[23f; †18f]
2015	D. Lazarus et al.: table 1 (p. 311)	[8f;87g;151s;3ss; †1f;48g;211s;17ss]