Concise hierarchy

(Kingdom) Chromista - (Phylum) Cercozoa - (Class) Imbricatea

Current position

Placoperla (Subclass)

Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 20).

Alternative positions

Cyathobodonea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1995: table (p. 1013).
Imbricatea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: S. Ota, 2011: 2.
Monadofilosa (Subphylum) Cavalier-Smith, 1997	Ref: T. Cavalier-Smith, 1998: 232. [indirect]
Spongomonadea (Class) T. Cavalier-Smith, 2000	Ref: T. Cavalier-Smith, 2002b: 337. [indirect]

Historical positions

Placoperla (Subclass)	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 20).
Imbricatea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: A.T. Howe et al., 2011: abstract. [rough position]
Spongomonadea (Class) T. Cavalier-Smith, 2000	Ref: T. Cavalier-Smith, 2002b: 337. [indirect]
Monadofilosa (Subphylum) Cavalier-Smith, 1997	Ref: T. Cavalier-Smith, 1998: table 3 (p. 232). [indirect]
Cyathobodonea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1995: table (p. 1013).
Cyathobodonea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: table 4 (p. 970).

Number of Subtaxa

2025	Available in Systema Naturae 2000	1f;2g;1s
1989-present	Systema Naturae 2000: 13 Mar 2016	[1f;2g]
2011	S. Ota: 2	[1f]