Concise hierarchy

(Kingdom) Chromista - (Phylum) Retaria

Phylogeny

Holophyletic

Original position

Radiolaria (Subphylum) Müller, 1858

Ref: T. Cavalier-Smith, 1993b: table 4 (p. 972).

Original entries

Nassellaria (Subclass) Ehrenberg, 1875		Ref: T. Cavalier-Smith, 1993b: table 4 (p. 972).
Spumellaria (Subclass) Ehrenberg, 1875		Ref: T. Cavalier-Smith, 1993b: table 4 (p. 972).

Current position

Polycystinia (Superclass) Ehrenberg, 1838

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

Alternative positions

Actinopoda (Superclass) Calkins, 1902	Ref: R.C. Brusca & G.J. Brusca, 1990
amoeboid protists ([unranked])	Ref: O.R. Anderson et al., 2000: 994. [alternative position]
Radiolaria (Subphylum) Müller, 1858	Ref: T. Cavalier-Smith, 2002b: 323.
Radiolaria (Phylum) Müller, 1858	Ref: T. Cavalier-Smith, 2002b: 323. [implicit]

Historical positions

Polycystinia (Superclass) Ehrenberg, 1838	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 21).
Radiolaria (Subphylum) Müller, 1858	Ref: T. Cavalier-Smith, 2002b: 323; 336.
amoeboid protists ([unranked])	Ref: O.R. Anderson et al., 2000: 994. [alternative name]
Actinopoda (Superclass) Calkins, 1902	Ref: 1998
Radiolaria (Subphylum) Müller, 1858	Ref: T. Cavalier-Smith, 1993b: table 4 (p. 972). [new rank]
Actinopoda (Superclass) Calkins, 1902	Ref: R.C. Brusca & G.J. Brusca, 1990
Actinopoda (Superclass) Calkins, 1902	Ref: N.D. Levine et al., 1980

Number of Subtaxa

2025	Available in Systema Naturae 2000	†1o;3f;12g
1989-present	Systema Naturae 2000: 12 Mar 2016	[3o]
2015	D. Lazarus et al.: table 1 (p. 321)	[2o;18f;204g;393s;12ss; †2f;149g;793s;71ss]
2015b	M.A. Ruggiero et al.: table 2 (p. 21)	[3o]