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Taxon:
Class
Alphaproteobacteria
Garrity
et al.
2006
(prokaryote)
Taxa
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Hierarchy
Nomenclature
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Entity:
Pseudomonadota (Phylum)
..Acidithiobacillia (Class)
..Betaproteobacteria (Class)
..Deltaproteobacteria (Class)
..Epsilonproteobacteria (Class)
..Gammaproteobacteria (Class)
..Hydrogenophilia (Class)
..Oligoflexia (Class)
..Alphaproteobacteria (Class)
....Anoxypelagibacter (Candidatus)
....Catenimonas (Candidatus)
....Caulobacterales (Order)
....Charonomicrobium (Genus)
....Combothrix (Candidatus)
....Emcibacterales (Order)
....Endolissoclinum (Candidatus)
....Endowatersipora (Candidatus)
....Enterousia (Candidatus)
....Futianiales (Order)
....Hodgkinia (Candidatus)
....Holosporales (Order)
....Hyphomicrobiales (Order)
....Iodidimonadales (Order)
....Kordiimonadales (Order)
....Magnetococcales (Order)
....Marinosulfonomonas (Genus)
....Mariprofundales (Order)
....Mesopelagibacter (Candidatus)
....Methylosporovibrio (Genus)
....Methylosulfonomonas (Genus)
....Micropelagius (Candidatus)
....Micropepsales (Order)
....Minwuiales (Order)
....Monilibacter (Candidatus)
....Nanobacterium (Genus)
....Parvularculales (Order)
....Pelagibacterales (Candidate order)
....Phycosocius (Candidatus)
....Puniceispirillales (Candidate order)
....Radicibacterales (Order)
....Rhodobacterales (Order)
....Rhodospirillales (Order)
....Rhodothalassiales (Order)
....Rickettsiales (Order)
....Roseivibrio (Candidatus)
....Scatocola (Candidatus)
....Sneathiellales (Order)
....Sphingomonadales (Order)
....Tetracoccus (Genus)
Authorship
SN2000 author citation
:
Garrity
et al.
,
in
Brenner
et al.
, eds., 2005/2006
Etymology
Derived from
:
Proteobacteria
(Phylum)
Garrity
et al.
2005 stat. inval.
Ref:
S.J. Brands (comp.), 1989-present
: 2 May 2026.
Attributes
Orthographically correct name [ICNP, 2022: Rule 8 (class: not -ia; <2012)]
Ref:
LPSN, 2020-present. LPSN
: [25 Apr 2026] ("orthographically correct (nominative plural noun, not formed from the name of the nomenclatural type)").
Types
Type genus, by inclusion within designated type
:
Caulobacter
(Genus)
Henrici and Johnson 1935 (Approved Lists 1980)
Ref:
LPSN, 2020-present
: [25 Apr 2026].
Variants
Not validly published name
:
Alphaproteobacteria
(Class)
"Garrity and Holt 2001" nom. nud.
Different rank
:
Alphabacteria
(Infraphylum)
(Cavalier-Smith 1992) Cavalier-Smith 1998
Former rank
:
Alphaproteobacteria
(Phylum)
"Anantharaman
et al.
2016" nom. nud.
Ref:
LPSN, 2020-present
: [6 Jun 2026]; 6 Jun 2026.
[inferred]
Synonyms
Synonymous name (objective)
:
Alpha Group
([unranked])
©2004-2026 Universal Taxonomic Services
Last updated:
28 Aug 2026