Concise hierarchy

(Domain) Eukaryota - (Phylum) Metamonada - (Class) Trichomonadea

Subsequent positions

Cristomonadia (Subclass) Cavalier-Smith, 2012		Ref: T. Cavalier-Smith, 2013(2012): table 1 (p. 121).
Spirotrichonymphea (Class) Grassé, 1952		Ref: I. Cepicka et al., 2010: 427.

Current position

Cristomonadia (Subclass) Cavalier-Smith, 2012

Ref: T. Cavalier-Smith, 2013(2012): table 1 (p. 121). [new position]

Alternative positions

Hypermastigia (Class)	Ref: G. Brugerolle & J.J. Lee, 2000: 1240.
Spirotrichonymphea (Class) Grassé, 1952	Ref: I. Cepicka et al., 2010: table 1 (p. 421). [new position]
Trichomonadea (Class) Kirby, 1947	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 8).

Historical positions

Trichomonadea (Class) Kirby, 1947	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 8).
Cristomonadia (Subclass) Cavalier-Smith, 2012	Ref: T. Cavalier-Smith, 2013(2012): table 1 (p. 121). [new position]
Spirotrichonymphea (Class) Grassé, 1952	Ref: I. Cepicka et al., 2010: 427, table 1 (p. 421). [new position]
Trichomonadea (Class) Kirby, 1947	Ref: T. Cavalier-Smith, 2003: 1746.
Hypermastigia (Class)	Ref: G. Brugerolle & J.J. Lee, 2000: 1240; 1224.

Number of Subtaxa

2024	Available in Systema Naturae 2000	1f;9g;16s
1989-present	Systema Naturae 2000	1f;9g
2013(2012)	T. Cavalier-Smith: table 1 (p. 121)	[1f]
2010	I. Cepicka et al.: 427	1f;[10g]
2000	G. Brugerolle & J.J. Lee	3f;(8g)