Eukaryotes

 Prokaryotes

   Bacteria

   Archaea

     Euryarchaeota

       Methanocaldococcus

       Methanotorris

       Methanococcus

       Methanothermococcus

       Methanofervidicoccus

       Methanothermobacter

       Methanosphaera

       Methanobrevibacter

       Methanobacterium

       Methanothermus

       Methanopyrus

       Archaeoglobus

       Ferroglobus

       Geoglobus

       Thermoplasma

       Picrophilus

       Ferroplasma

       Cuniculiplasma

       Methanomassiliicoccus

       Pyrococcus

       Thermococcus

       Palaeococcus

       Methanosarcina

       Methanococcoides

       Methanohalophilus

       Methanohalobium

       Methanosalsum

       Methanolobus

       Methanomethylovorans

       Methanospirillum

       Methanocorpusculum

       Methanoculleus

       Methanolacinia

       Methanoregula

       Methanosphaerula

       Halobacterium

       Halalkalicoccus

       Halodesulfurarchaeum

       Halanaeroarchaeum

       Salarchaeum

       Haloarcula

       Natronomonas

       Halorhabdus

       Halomicrobium

       Halorientalis

       Halapricum

       (no genus name)

       Haloquadratum

       Haloferax

       Halogeometricum

       Haloplanus

       Halobellus

       Haloprofundus

       Halorubrum

       Salinigranum

       Halohasta

       Halalkaliarchaeum

       (no genus name)

       Haloterrigena

       Natrialba

       Halopiger

       Natrinema

       Natronobacterium

       Halovivax

       Natronococcus

       Salinarchaeum

       Halostagnicola

       Halobiforma

       Natronolimnobius

       Natronorubrum

     Crenarchaeota

     Thaumarchaeota

     Candidatus Bathyarchaeota

     Asgard group