Sphingobacteria Cavalier-Smith, 1987[1] 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.

[2] Cavalier-Smith calls the equivalent grouping a phylum by the name of Sphingobacteria.

[3][4][5] "Hydrogenedentes" "Fermentibacteria" Gemmatimonadota "Latescibacteria" Fibrobacterota "Delphibacteria" "Cloacimonetes" "Zixibacteria" Calditrichota "Marinimicrobia" Ignavibacteriota "Kryptonia" "Kapabacteria" Chlorobiota Rhodothermota Bacteroidota Fibrobacterota Gemmatimonadota Calditrichota Ignavibacteriota Chlorobiota Rhodothermota Balneolota Bacteroidota "Latescibacteria (incl.

"Raymondbacteria") "Delongbacteria" Calditrichota "Marinisomatota" "Kapabacteria" "Kryptonia" "Ignavibacteriia" "Chlorobiia" Rhodothermia (incl.