| FCB |
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| Bacteroides spp. |
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| Scientific classification |
| Domain: |
Bacteria |
| Kingdom: |
Pseudomonadati |
| Superphylum: |
FCB |
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| Phyla |
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| Synonyms |
- Sphingobacteria Cavalier-Smith, 1987
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The FCB is a proposed 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 |
GTDB 07-RS207 by Genome Taxonomy Database |
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"Latescibacteria (incl. "Handelsmanbacteria") |
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"Hydrothermota" (incl. "Stahlbacteria", "Pyropristinus") |
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An analogous situation is seen with the PVC group/Planctobacteria.