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Chromosomes analyzed from eubacterial phyla1
| Phylum | Class1 | Number |
| Actinobacteria | 23 | |
| Bacteroidetes | 5 | |
| Chlamydiae | 11 | |
| Cyanobacteria | 17 | |
| Deinococcus-Thermus | 4 | |
| Firmicutes | 79 | |
| Mollicutes | 16 | |
| Lactobacillales | 27 | |
| Clostridia | 7 | |
| Bacillales | 29 | |
| Proteobacteria | 197 | |
| Alphaproteobacteria | 55 | |
| Betaproteobacteria | 38 | |
| Deltaproteobacteria | 11 | |
| Epsilonproteobacteria | 8 | |
| Gammaproteobacteria | 85 | |
| Spirochaetes | 6 | |
| Others | 10 |
1The two phyla with the largest sample sizes are shown sub-divided by Class representation.
