Sphingobacteria (phylum)

Sphingobacteria
	Bacteroides spp.
Scientific classification
Domain:	Bacteria
Clade:	FCB group
Phyla
	Bacteroidota–Chlorobiota group Bacteroidota; Balneolota; Chlorobiota; Ignavibacteriota; Rhodothermota; "Ca. Kapabacteria"; "Ca. Kryptonia"; ; Calditrichota; Fibrobacterota; Gemmatimonadota; "Ca. Aegiribacteria"; "Ca. Cloacimonetes"; "Ca. Delphibacteria"; "Ca. Fermentibacteria"; "Ca. Hydrogenedentes"; "Ca. Latescibacteria"; "Ca. Marinimicrobia"; "Ca. "Zixibacteria";
Synonyms
	Sphingobacteria Cavalier-Smith, 1987

The FCB group is a superphylum of bacteria named after the main member phyla Fibrobacterota, Chlorobiota, and Bacteroidota. The members are considered to form a clade due to a number of conserved signature indels.

Cavalier-Smith calls the equivalent grouping a phylum by the name of Sphingobacteria. It contains the classes Chlorobiota, Fibrobacterota, Bacteroidota, and Flavobacteria. However, this megaclassification is not followed by the larger scientific community.

FCB group

16S rRNA based LTP_12_2021

FCB

"Hydrogenedentes"

Bacteroidota–Chlorobiota

"Kapabacteria"

"Latescibacteria (incl. "Handelsmanbacteria")

	"Eisenbacteria"

	"Krumholzibacteriota" (incl. "Delphibacteria")

	"Fermentibacteria" (incl. "Aegiribacteria")

	Gemmatimonadota (incl. "Glassbacteria")

"Hydrothermota" (incl. "Stahlbacteria", "Pyropristinus")

	"Cloacimonetes"

	Fibrobacterota (incl. "Raymondbacteria")

"Delongbacteria"

"Marinisomatota"

"Kapabacteria"

	Rhodothermia (incl. Balneolales)

	Bacteroidia

An analogous situation is seen with the PVC group/Planctobacteria.

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