Concise hierarchy

(Kingdom) Pseudomonadati - (Phylum) Planctomycetota - (Class) Planctomycetia

Current position

Planctomycetia (Class) Ward 2020

Ref: LPSN, 2020-present: [17 Apr 2026]; LPSN[17 Apr 2026].

Alternative positions

Planctobacteria (Phylum) Cavalier-Smith 1998 stat. inval.	Ref: T. Cavalier-Smith, 1998: 218.
Planctomycea (Class) Cavalier-Smith 2002 nom. rej.	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 4).
Planctomycetacia (Class) "Garrity and Holt 2001" nom. nud.	Ref: J.P. Euzéby, 2016: [1 Sep 2017].

Historical positions

Planctomycetacia (Class) "Garrity and Holt 2001" nom. nud.	Ref: J.P. Euzéby, 2016: [1 Sep 2017].
Planctomycea (Class) Cavalier-Smith 2002 nom. rej.	Ref: M.A. Ruggiero et al., 2015b: table 2 (p. 4).
Planctomycetacia (Class) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity et al., 2007: 540.
Planctomycea (Class) Cavalier-Smith 2002 nom. rej.	Ref: T. Cavalier-Smith, 2002a: tbl. 1 (p. 11). [new position]
Planctomycetacia (Class) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity et al., 2001b: 24.
Planctomycetacia (Class) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity & J.G. Holt, 2001a: 165.
Planctobacteria (Phylum) Cavalier-Smith 1998 stat. inval.	Ref: T. Cavalier-Smith, 1998: table 2 (p. 218).

Number of Subtaxa

2026	Available in Systema Naturae 2000	1f;20g;7s
1989-present	Systema Naturae 2000: 17 Apr 2026	[1f;20g]
2016	J.P. Euzéby: [9 Sep 2017]	[1f;15g]
2007	G.M. Garrity et al.	[1f;6g;11s]
2001b	G.M. Garrity et al.: 24	[1f;4g]
2001a	G.M. Garrity & J.G. Holt: 165	[1f;4g]
2000		1f4g