Concise hierarchy

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

Subsequent positions

Imbricatea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003		Ref: T. Cavalier-Smith & E.E.-Y. Chao, 2003 [assumed]
Sarcomonadea (Class) Cavalier-Smith, 1993		Ref: T. Cavalier-Smith, 1995: table (p. 1012).

Current position

Placoperla (Subclass)

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

Alternative positions

Imbricatea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: T. Cavalier-Smith & E.E.-Y. Chao, 2003 [new position]
Sarcomonadea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1995: table (p. 1012).
Thaumatomonadidea (Superorder) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: table 4 (p. 970).

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] [implicit]
Imbricatea (Class) T. Cavalier-Smith & E.E.-Y. Chao, 2003	Ref: T. Cavalier-Smith & E.E.-Y. Chao, 2003 [new position]
Sarcomonadea (Class) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1995: table (p. 1012).
Thaumatomonadidea (Superorder) Cavalier-Smith, 1993	Ref: T. Cavalier-Smith, 1993b: table 4 (p. 970).

Number of Subtaxa

2024	Available in Systema Naturae 2000	2f;6g;1s
1989-present	Systema Naturae 2000	[2f]
2011	S. Ota: 2	[2f]