| uncultured archaeon | No | no rank | archaea | environmental samples | species | 115547 | click here |
| uncultured methanobacteriales archaeon | No | no rank | archaea | environmental samples | species | 194842 | click here |
| uncultured methanobrevibacter sp. | No | no rank | archaea | environmental samples | species | 253161 | click here |
| uncultured methanomassiliicoccales archaeon | No | no rank | | | species | 1235852 | click here |