Concise hierarchy

(Kingdom) Pseudomonadati - (Phylum) Pseudomonadota - (Class) Gammaproteobacteria - (Order) Alteromonadales

Original position

gamma (Subclass)

Subsequent positions

Alteromonadales (Order) "Garrity and Holt 2001" nom. nud.

Subsequent entries

Alteromonas (Genus) Baumann et al. 1972 (Approved Lists 1980)		Ref: E.P. Ivanova & Mikhailov, 2001 [assumed]
Colwellia (Genus) Deming et al. 1988		Ref: E.P. Ivanova & Mikhailov, 2001 [assumed]
Glaciecola (Genus) Bowman et al. 1998
Idiomarina (Genus) Ivanova et al. 2000		Ref: E.P. Ivanova & Mikhailov, 2001 [assumed]
Pseudoalteromonas (Genus) Gauthier et al. 1995		Ref: E.P. Ivanova & Mikhailov, 2001 [assumed]
Shewanella (Genus) MacDonell and Colwell 1986

Current position

Alteromonadales (Order) Bowman and McMeekin 2005

Ref: LPSN, 2020-present: [3 May 2026]; LPSN[3 May 2026].

Alternative positions

Alteromonadales (Order) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity et al., 2001b: 12.
gamma (Subclass)	Ref: E.P. Ivanova & Mikhailov, 2001: 10. [new taxon]

Historical positions

Alteromonadales (Order) Bowman and McMeekin 2005	Ref: J.P. Euzéby, 2016: [5 Sep 2017].
Alteromonadales (Order) Bowman and McMeekin 2005	Ref: G.M. Garrity et al., 2007: 195.
Gammaproteobacteria (Class) "Garrity and Holt 2001" nom. nud.	Ref: E.P. Ivanova et al., 2004 [emended diagnosis]
Alteromonadales (Order) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity et al., 2001b: 12.
Alteromonadales (Order) "Garrity and Holt 2001" nom. nud.	Ref: G.M. Garrity & J.G. Holt, 2001a: 160.
gamma (Subclass)	Ref: E.P. Ivanova & Mikhailov, 2001: 15; 10. [new taxon]

Number of Subtaxa

2026	Available in Systema Naturae 2000	30g;83s
1989-present	Systema Naturae 2000: 3 May 2026	[30g]
2016	J.P. Euzéby: [12 Sep 2017]	[15g]
2007	G.M. Garrity et al.	[3g;13s]
2004	E.P. Ivanova et al.	[2g]
2001b	G.M. Garrity et al.: 13	[12g]
2001	E.P. Ivanova & Mikhailov	4g;(31s;4ss)
2001a	G.M. Garrity & J.G. Holt: 160	[11g]
2000		11g