KingdomMethanobacteriati
| Taxon: | Rank: |
| Euryarchaeota | phylum |
| Hadarchaeota | phylum |
| Hydrothermarchaeota | phylum |
| Methanobacteriota | phylum |
| Poseidoniota | phylum |
| Taxon: | Rank: |
| Euryarchaeota | phylum |
| Hadarchaeota | phylum |
| Hydrothermarchaeota | phylum |
| Methanobacteriota | phylum |
| Poseidoniota | phylum |