Classification of classes

J.P. Euzéby: List of Prokaryotic names with Standing in Nomenclature

Classification of classes

Acidimicrobiia
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Acidobacteria
Division or phylum: "Acidobacteria" (see Phylum "Acidobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Actinobacteria
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Actinomycetes
Class not widely accepted by the community of microbiologists. The class Actinomycetes is illegitimate because it was proposed without the designation of a nomenclatural type.

Alphabacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Alphaproteobacteria.

Alphaproteobacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Anaerolineae
Division or phylum: "Chloroflexi" (see Phylum "Chloroflexi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Anoxyphotobacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Alphaproteobacteria.

Aquificae
Division or phylum: "Aquificae" (see Phylum "Aquificae" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Arabobacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Actinobacteria.

Archaeobacteria
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Archaeobacteria Murray 1988 is an earlier homotypic synonym of Methanobacteria Boone 2002.

Archaeoglobea
Class not widely accepted by the community of microbiologists. The class Archaeoglobea is illegitimate because type order "Archaeoglobales" Stetter 1989 is not validly published.

Archaeoglobi
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Armatimonadia
Division or phylum: "Armatimonadetes" (see Phylum "Armatimonadetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Arthrobacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Actinobacteria.

Bacteria
Class not widely accepted by the community of microbiologists. The class Bacteria is illegitimate because it was proposed without the designation of a nomenclatural type.

Bacilli
Division or phylum: "Firmicutes" (see Phylum "Firmicutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Bacteroidia
Division or phylum: "Bacteroidetes" (see Phylum "Bacteroidetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Betaproteobacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Caldilineae
Division or phylum: "Chloroflexi" (see Phylum "Chloroflexi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Caldisericia
Division or phylum: "Caldiserica" (see Phylum "Caldiserica" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Chlamydiae
Division or phylum: "Chlamydiae" (see Phylum "Chlamydiae" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Chlorobacteria
Class not widely accepted by the community of microbiologists. The class Chlorobacteria is illegitimate because type order "Chloroflexales" is not validly published.

Chlorobea or "Chlorobia"
Division or phylum: "Chlorobi" (see Phylum "Chlorobi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Chloroflexia
Division or phylum: "Chloroflexi" (see Phylum "Chloroflexi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Chromatibacteria
Class not widely accepted by the community of microbiologists. The class Chromatibacteria is illegitimate because type order "Enterobacteriales" is not validly published.

Chroobacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the phylum "Cyanobacteria".

Chrysiogenetes
Division or phylum: "Chrysiogenetes" (see Phylum "Chrysiogenetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Chthonomonadetes
Division or phylum: "Armatimonadetes" (see Phylum "Armatimonadetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Clostridia
Division or phylum: "Firmicutes" (see Phylum "Firmicutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Coriobacteriia
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Crenarchaeota
Division or phylum: "Crenarchaeota" (see Phylum "Crenarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Cytophagia
Division or phylum: "Bacteroidetes" (see Phylum "Bacteroidetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Deferribacteres
Division or phylum: "Deferribacteres" (see Phylum "Deferribacteres" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Dehalococcoidia
Division or phylum: "Chlorobi" (see Phylum "Chlorobi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Deinococci
Division or phylum: "Deinococcus-Thermus" (see Phylum "Deinococcus-Thermus" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Deltabacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)
Note: Deltabacteria Cavalier-Smith 2002 is an earlier homotypic synonym of Deltaproteobacteria Kuever et al. 2006.

Deltaproteobacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)
Note: Deltaproteobacteria Kuever et al. 2006 is a later homotypic synonym of Deltabacteria Cavalier-Smith 2002.

Dictyoglomia
Division or phylum: "Dictyoglomi" (see Phylum "Dictyoglomi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Elusimicrobia
Division or phylum: "Elusimicrobia" (see Phylum "Elusimicrobia" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Epsilobacteria
Class not widely accepted by the community of microbiologists. The class Epsilobacteria is illegitimate because type order "Aquificales" Reysenbach 2001 is not validly published.

Epsilonproteobacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Erysipelotrichia
Division or phylum: "Firmicutes" (see Phylum "Firmicutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Ferrobacteria
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Deferribacteres.

Fibrobacteria
Division or phylum: "Fibrobacteres" (see Phylum "Fibrobacteres" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Fimbriimonadia
Division or phylum: "Armatimonadetes" (see Phylum "Armatimonadetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Firmibacteria
Class not widely accepted by the community of microbiologists.

Flavobacteria
Division or phylum: "Bacteroidetes" (see Phylum "Bacteroidetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Flavobacteriia
Division or phylum: "Bacteroidetes" (see Phylum "Bacteroidetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Fusobacteriia
Division or phylum: "Fusobacteria" (see Phylum "Fusobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Gammaproteobacteria
Division or phylum: "Proteobacteria" (see Phylum "Proteobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Gemmatimonadetes
Division or phylum: "Gemmatimonadetes" (see Phylum "Gemmatimonadetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Gloeobacteria
Division or phylum: "Cyanobacteria" (see the file Classification of Cyanobacteria)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Hadobacteria
Class not widely accepted by the community of microbiologists. The type order "Thermales" Rainey and Da Costa 2001 does not appear on the Approved Lists of Bacterial Names, and was not validly published when Cavalier-Smith proposed the class Hadobacteria (January 14, 2002). The order ¤ Thermales Rainey and Da Costa 2002 (previously known as "Thermales" Rainey and Da Costa 2001) was validly published in the May 2002 issue of the IJSEM (Validation List n° 85).

Halobacteria
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Halobacteria Grant et al. 2002 is a later homotypic synonym of Halomebacteria Cavalier-Smith 2002.

Halomebacteria
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Halomebacteria Cavalier-Smith 2002 is an earlier homotypic synonym of Halobacteria Grant et al. 2002.

Holophagae
Division or phylum: "Acidobacteria" (see Phylum "Acidobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Hormogoneae
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the phylum "Cyanobacteria".

Ignavibacteria
Division or phylum: "Chlorobi" (see Phylum "Chlorobi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Ktedonobacteria
Division or phylum: "Chloroflexi" (see Phylum "Chloroflexi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Lentisphaeria
Division or phylum: "Lentisphaerae" (see Phylum "Lentisphaerae" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Methanobacteria
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Methanobacteria Boone 2002 is a later homotypic synonym of Archaeobacteria Murray 1988.

Methanococci
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Methanococci Boone 2002 is a later homotypic synonym of Methanothermea Cavalier-Smith 2002.

"Methanomicrobia"
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Methanopyri
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Methanothermea
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Methanothermea Cavalier-Smith 2002 is an earlier homotypic synonym of Methanococci Boone 2002.

Microtatobiotes
Class not widely accepted by the community of microbiologists. The class Microtatobiotes is illegitimate because it was proposed without the designation of a nomenclatural type.

Mollicutes
Division or phylum: "Tenericutes" (see Phylum "Tenericutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Negativicutes
Division or phylum: "Firmicutes" (see Phylum "Firmicutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Nitriliruptoria
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

"Nitrospira"
Division or phylum: "Nitrospira" (see Phylum "Nitrospira" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Oligosphaeria
Division or phylum: "Lentisphaerae" (see Phylum "Lentisphaerae" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Opitutae
Division or phylum: "Verrucomicrobia" (see Phylum "Verrucomicrobia" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Oxyphotobacteria
Class not widely accepted by the community of microbiologists. The class Oxyphotobacteria is illegitimate because type order "Chroococcales" Gibbons and Murray is not validly published.
The order Chroococcales Cavalier-Smith was validly published in 2002. However, this order is illegitimate because its type genus "Chroococcus" is not validly published under the Rules of the Bacteriological Code (1990 Revision).

Photobacteria
Class not widely accepted by the community of microbiologists. The class Photobacteria is illegitimate because it was proposed without the designation of a nomenclatural type.

Phycisphaerae
Division or phylum: "Planctomycetes" or "Planctobacteria" (see Phylum "Planctomycetes" or "Planctobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Picrophilea
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Thermoplasmata.

Planctomycea or "Planctomycetacia"
Division or phylum: "Planctomycetes" or "Planctobacteria" (see Phylum "Planctomycetes" or "Planctobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Proteobacteria
Class not widely accepted by the community of microbiologists. The class Proteobacteria is illegitimate because it was proposed without the designation of a nomenclatural type.

Protoarchaea
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Protoarchaea Cavalier-Smith 2002 is an earlier homotypic synonym of Thermococci Zillig and Reysenbach 2002.

Rubrobacteria
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Schizomycetes
Class not widely accepted by the community of microbiologists. The class Schizomycetes is illegitimate because it was proposed without the designation of a nomenclatural type.

Scotobacteria
Class not widely accepted by the community of microbiologists. The class Scotobacteria is illegitimate because it was proposed without the designation of a nomenclatural type.

Sphingobacteriia
Division or phylum: "Bacteroidetes" (see Phylum "Bacteroidetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Spirochaetes
Division or phylum: "Spirochaetes" ("Spirochaetae")
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Streptomycetes
Class not widely accepted by the community of microbiologists. The type order of the class is classified in the class Actinobacteria.

Synergistia
Division or phylum: "Synergistetes" (see Phylum "Synergistetes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Teichobacteria
Class not widely accepted by the community of microbiologists.

Thermococci
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)
Note: Thermococci Zillig and Reysenbach 2002 is a later homotypic synonym of Protoarchaea Cavalier-Smith 2002.

Thermodesulfobacteria
Division or phylum: "Thermodesulfobacteria" (see Phylum "Thermodesulfobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Thermoleophilia
Division or phylum: "Actinobacteria" (see Phylum "Actinobacteria" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Thermolithobacteria
Division or phylum: "Firmicutes" (see Phylum "Firmicutes" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Thermomicrobia
Division or phylum: "Chloroflexi" (see Phylum "Chloroflexi" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Thermoplasmata
Division or phylum: "Euryarchaeota" (see Phylum "Euryarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Thermoprotei
Division or phylum: "Crenarchaeota" (see Phylum "Crenarchaeota" in the file Classification of domains and phyla)
Domain or empire: "Archaea" (see Domain "Archaea" in the file Classification of domains and phyla)

Thermotogae
Division or phylum: "Thermotogae" (see Phylum "Thermotogae" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)

Togobacteria
Class not widely accepted by the community of microbiologists. The class Togobacteria is illegitimate because the type order "Thermotogales" Huber and Stetter 1992. is not validly published.
The order Thermotogales Reysenbach 2002 (previously known as "Thermotogales" Huber and Stetter 1992) was validly published in the May 2002 issue of the IJSEM (Validation List n° 85).

Verrucomicrobiae
Division or phylum: "Verrucomicrobia" (see Phylum "Verrucomicrobia" in the file Classification of domains and phyla)
Domain or empire: "Bacteria" (see Domain "Bacteria" in the file Classification of domains and phyla)