Euryarchaeota

Euryarchaeota is a phylum of Archaea containing extremely halophilic organisms, methanogens and some extremely thermophilic aerobes and anaerobes.

Halobacteria

Methanobacteria

Methanococci

Methanomicrobia

Methanosarcinae

Methanopyri

Archeoglobi

Thermoplasmata

Thermococci