Concise hierarchy

(Domain) Bacteria - (Phylum) Chlamydiae - (Class) Chlamydiae

Current position

Chlamydiae (Class) Cavalier-Smith 2002

Ref: J.P. Euzéby, 2016: [31 Aug 2017].

Alternative positions

Chlamydiae (Class) Cavalier-Smith, 2002	Ref: G.M. Garrity et al., 2007: 541.
Rickettsias ([unranked])	Ref: L.A. Page, 1982: 41.
Scotobacteria (Class) Gibbons and Murray 1978 (Approved Lists 1980)	Ref: N.R. Krieg & J.G. Holt, 1984-1989
Spirochaeta (Class)	Ref: R.C. van Caenegem et al., 1979-1984 [assumed]

Historical positions

Chlamydiae (Class) Cavalier-Smith 2002	Ref: J.P. Euzéby, 2016: [31 Aug 2017].
Chlamydiae (Class) Cavalier-Smith 2002	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 3).
Chlamydiae (Class) Cavalier-Smith, 2002	Ref: G.M. Garrity et al., 2007: 541.
Chlamydiae (Class) Cavalier-Smith, 2002	Ref: G.M. Garrity et al., 2001b: 24.
Scotobacteria (Class) Gibbons and Murray 1978 (Approved Lists 1980)	Ref: N.R. Krieg & J.G. Holt, 1984-1989
Rickettsias ([unranked])	Ref: L.A. Page, 1982: 41.

Number of Subtaxa

2024	Available in Systema Naturae 2000	4f;8g;17s
1989-present	Systema Naturae 2000	[4g;7g;14s]
2016	J.P. Euzéby: [8 Sep 2017]	[4f;6g]
2007	G.M. Garrity et al.	[4g;7g;14s]
2001b	G.M. Garrity et al.: 24	[4f;5g]
2000		4f5g
1982	L.A. Page	1g2s