List of Archaea genera

This article lists the genera of the Archaea.

The following genus of the Archaea has not been assigned to a phylum:

*Genus "Halostagnicola"

Phylum Crenarchaeota

This section lists the genera of Archaea within the Phylum Crenarchaeota.

Class Thermoprotei

This section lists the genera of Archaea within the Class Thermoprotei.

Order Caldisphaerales

This section lists the genera of Archaea within the Order Caldisphaerales.

Family Caldisphaeraceae

This section lists the genera of Archaea within the Family Caldisphaeraceae.

:*Genus "Caldisphaera"

Order Cenarchaeales

This section lists the genera of Archaea within the Order Cenarchaeales.

Family Cenarchaeaceae

This section lists the genera of Archaea within the Family Cenarchaeaceae.

:*Genus "Cenarchaeum"

Order Desulfurococcales

This section lists the genera of Archaea within the Order Desulfurococcales.

The following two genera of the Desulfurococcales have not been assigned to a family:

*Genus "Caldococcus"
*Genus "Ignisphaera"

Family Desulfurococcaceae

This section lists the genera of Archaea within the Family Desulfurococcaceae.

:*Genus "Acidilobus":*Genus "Acidococcus":*Genus "Aeropyrum":*Genus "Desulfurococcus":*Genus "Ignicoccus":*Genus "Staphylothermus":*Genus "Stetteria":*Genus "Sulfophobococcus":*Genus "Thermodiscus":*Genus "Thermosphaera"

Family Pyrodictiaceae

This section lists the genera of Archaea within the Family Pyrodictiaceae.

:*Genus "Geogemma":*Genus "Hyperthermus":*Genus "Pyrodictium":*Genus "Pyrolobus"

Order Nitrosopumilales

This section lists the genera of Archaea within the Order Nitrosopumilales.

Family Nitrosopumilaceae

This section lists the genera of Archaea within the Family Nitrosopumilaceae.

:*Genus "Nitrosopumilus" (candidatus)

Order Sulfolobales

This section lists the genera of Archaea within the Order Sulfolobales.

Family Sulfolobaceae

This section lists the genera of Archaea within the Family Sulfolobaceae.

:*Genus "Acidianus":*Genus "Metallosphaera":*Genus "Stygiolobus":*Genus "Sulfolobus":*Genus "Sulfurisphaera"

Order Thermoproteales

This section lists the genera of Archaea within the Order Thermoproteales.

Family Thermofilaceae

This section lists the genera of Archaea within the Family Thermofilaceae.

:*Genus "Thermofilum"

Family Thermoproteaceae

This section lists the genera of Archaea within the Family Thermoproteaceae.

:*Genus "Caldivirga":*Genus "Pyrobaculum":*Genus "Thermocladium":*Genus "Thermoproteus":*Genus "Vulcanisaeta"

Phylum Euryarchaeota

This section lists the genera of Archaea within the Phylum Euryarchaeota.

The following genus of the Euryarchaeota has not been assigned to a class:

*Genus "Aciduliprofundum"

Class Archaeoglobi

This section lists the genera of Archaea within the Class Archaeoglobi.

Order Archaeoglobales

This section lists the genera of Archaea within the Order Archaeoglobales.

Family Archaeoglobaceae

This section lists the genera of Archaea within the Family Archaeoglobaceae.

:*Genus "Archaeoglobus":*Genus "Ferroglobus":*Genus "Geoglobus"

Class Halobacteria

This section lists the genera of Archaea within the Class Halobacteria.

Order Halobacteriales

This section lists the genera of Archaea within the Order Halobacteriales.

Family Halobacteriaceae

This section lists the genera of Archaea within the Family Halobacteriaceae.

:*Genus "Haladaptatus":*Genus "Halalkalicoccus":*Genus "Haloalcalophilium":*Genus "Haloarcula":*Genus "Halobacterium":*Genus "Halobaculum":*Genus "Halobiforma":*Genus "Halococcus":*Genus "Haloferax":*Genus "Halogeometricum":*Genus "Halomicrobium":*Genus "Halopiger":*Genus "Haloplanus":*Genus "Haloquadra":*Genus "Halorhabdus":*Genus "Halorubrum":*Genus "Halosarcina":*Genus "Halosimplex":*Genus "Haloterrigena":*Genus "Halovivax":*Genus "Natrialba":*Genus "Natrinema":*Genus "Natronobacterium":*Genus "Natronococcus":*Genus "Natronolimnobius":*Genus "Natronomonas":*Genus "Natronorubrum"

Class Methanobacteria

This section lists the genera of Archaea within the Class Methanobacteria.

Order Methanobacteriales

This section lists the genera of Archaea within the Order Methanobacteriales.

The following two genera of the Methanomicrobiales have not been assigned to a family:

*Genus "Methanoregula" ("candidatus")
*Genus "Methanocalculus"

Family Methanobacteriaceae

This section lists the genera of Archaea within the Family Methanobacteriaceae.

:*Genus "Methanobacterium":*Genus "Methanobrevibacter":*Genus "Methanosphaera":*Genus "Methanothermobacter"

Family Methanothermaceae

This section lists the genera of Archaea within the Family Methanothermaceae.

:*Genus "Methanothermus"

Class Methanococci

This section lists the genera of Archaea within the Class Methanococci.

Order Methanococcales

This section lists the genera of Archaea within the Order Methanococcales.

Family Methanocaldococcaceae

This section lists the genera of Archaea within the Family Methanocaldococcaceae.

:*Genus "Methanocaldococcus":*Genus "Methanotorris"

Family Methanococcaceae

This section lists the genera of Archaea within the Family Methanococcaceae.

:*Genus "Methanococcus":*Genus "Methanothermococcus"

Class Methanomicrobia

This section lists the genera of Archaea within the Class Methanomicrobia.

Order Methanomicrobiales

This section lists the genera of Archaea within the Order Methanomicrobiales.

Family Methanocorpusculaceae

This section lists the genera of Archaea within the Family Methanocorpusculaceae.

:*Genus "Methanocorpusculum"

Family Methanomicrobiaceae

This section lists the genera of Archaea within the Family Methanomicrobiaceae.

:*Genus "Methanoculleus":*Genus "Methanofollis":*Genus "Methanogenium":*Genus "Methanolacinia":*Genus "Methanomicrobium":*Genus "Methanoplanus"

Family Methanospirillaceae

This section lists the genera of Archaea within the Family Methanospirillaceae.

:*Genus "Methanospirillum"

Order Methanosarcinales

This section lists the genera of Archaea within the Order Methanosarcinales.

Family Methanosaetaceae

This section lists the genera of Archaea within the Family Methanosaetaceae.

:*Genus "Methanosaeta"

Family Methanosarcinaceae

This section lists the genera of Archaea within the Family Methanosarcinaceae.

:*Genus "Methanimicrococcus":*Genus "Methanococcoides":*Genus "Methanohalobium":*Genus "Methanohalophilus":*Genus "Methanolobus":*Genus "Methanomethylovorans":*Genus "Methanosalsum":*Genus "Methanosarcina"

Class Methanopyri

This section lists the genera of Archaea within the Class Methanopyri.

Order Methanopyrales

This section lists the genera of Archaea within the Order Methanopyrales.

Family Methanopyraceae

This section lists the genera of Archaea within the Family Methanopyraceae.

:*Genus "Methanopyrus"

Class Thermococci

This section lists the genera of Archaea within the Class Thermococci.

Order Thermococcales

This section lists the genera of Archaea within the Order Thermococcales.

Family Thermococcaceae

This section lists the genera of Archaea within the Family Thermococcaceae.

:*Genus "Palaeococcus":*Genus "Pyrococcus":*Genus "Thermococcus"

Class Thermoplasmata

This section lists the genera of Archaea within the Class Thermoplasmata.

Order Thermoplasmatales

This section lists the genera of Archaea within the Order Thermoplasmatales.

Family Ferroplasmaceae

This section lists the genera of Archaea within the Family Ferroplasmaceae.

:*Genus "Ferroplasma"

Family Picrophilaceae

This section lists the genera of Archaea within the Family Picrophilaceae.

:*Genus "Picrophilus"

Family Thermoplasmataceae

This section lists the genera of Archaea within the Family Thermoplasmataceae.

:*Genus "Thermoplasma"

Phylum Korarchaeota

This section lists the genera of Archaea within the Phylum Korarchaeota.

Only environmental samples of the Korarchaeota have been studied.

Phylum Nanoarchaeota

This section lists the genera of Archaea within the Phylum Nanoarchaeota.

The following genus of the Nanoarchaeota has not been assigned to a class:

*Genus "Nanoarchaeum"