| Rank | Scientific name | Taxonomic status |
|---|---|---|
| class | Archaeoglobi | accepted |
| class | Halobacteria | accepted |
| class | Methanobacteria | accepted |
| class | Methanococci | accepted |
| class | Methanomicrobia | accepted |
| class | Methanopyri | accepted |
| class | Thermococci | accepted |
| class | Thermoplasmata | accepted |
Euryarchaeota. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-13.