Archaea genera

Natronobacterium is a genus of archaeans in the family the Natrialbaceae. A member of the domain Archaea, it is both an extreme halophile and alkaliphile, thriving at an optimum saline concentration of 20% and optimum pH of 10.

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Acidilobus is a genus of archaea in the family Acidilobaceae.

Methanothrix is a genus of methanogenic archaea within the phylum Methanobacteriota. Methanothrix cells were first isolated from a mesophilic sewage digester but have since been found in many anaerobic and aerobic environments. Methanothrix were originally understood to be obligate anaerobes that can survive exposure to high concentrations of oxygen, but recent studies have shown at least one Candidatus operational taxonomic unit proposed to be in the Methanothrix genus not only survives but remains active in oxic soils. This proposed species, Ca. Methanothrix paradoxum, is frequently found in

Geogemma is a genus of archaeans in the family Pyrodictiaceae.

Halopiger is a genus of archaeans in the family Natrialbaceae that have high tolerance to salinity.

Caldivirga is a genus of archaeans in the family Thermoproteaceae.

Natronomonas (common abbreviation Nmn.) is a genus of archaeans in the family Halobacteriaceae.

Natronorubrum is a genus of archaeans in the family Halobacteriaceae.

Methanosalsum is a genus of microbes within the family Methanosarcinaceae. This genus contains two species.

Palaeococcus is a genus of archaeans in the family Thermococcaceae.

The genus Methanimicrococcus was described based on the strain PA (ATCC BAA-276; DSM 13328), isolated from the hindgut of a cockroach, Periplaneta americana. The species was initially named Methanomicrococcus blatticola; however, the name was later corrected to Methanimicrococcus blatticola, making it the only genus of methanogens that has -i as a connecting vowel rather than -o in the name.

Methanotorris is a genus of archaeans in the family Methanocaldococcaceae. The organisms in this genus differ from those of Methanothermococcus in that they are hyperthermophiles and from those of Methanocaldococcus in that they have no flagella, are not motile, and do not require selenium to grow. These microbes have not been shown to cause any illnesses.

Halomicrobium is a genus of archaeans in the family Haloarculaceae.

Natronococcus is a genus of archaeans in the family the Natrialbaceae.

Halobiforma (common abbreviation: Hbf.) is a genus of halophilic archaea of the family Natrialbaceae.

Halovivax is a genus of archaeans in the family Natrialbaceae. Some species of Halovivax are halophiles and have been found in Iran's Aran-Bidgol hypersaline lake.

Natrinema (common abbreviation Nnm.) is a genus of archaeans in the family Natrialbaceae.

Hyperthermus is a genus of archaeans in the family Pyrodictiaceae.

Natrialba is a genus of archaeans in the family Natrialbaceae. The genus consists of many diverse species that can survive extreme environmental niches, especially they are capable to live in the waters saturated or nearly saturated with salt (halophiles). They have certain adaptations to live within their salty environments. For example, their cellular machinery is adapted to high salt concentrations by having charged amino acids on their surfaces, allowing the cell to keep its water molecules around these components. The osmotic pressure and these amino acids help to control the amount of sa

Halogranum (common abbreviation Hgn.) is a genus of halophilic archaea in the family Haloferacaceae.

Halorhabdus is a genus of halophilic archaeans in the Haloarculaceae. With an extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.

Halostagnicola is a genus of archaeans in the family Natrialbaceae.

Halonotius (common abbreviation Hns.) is a genus of halophilic archaea in the family of Halorubraceae.

Halalkalicoccus (common abbreviation Hac.) is a genus of archaeans in the family Halobacteriaceae.

Nitrosopumilus is a genus of archaea. The type species, Nitrosopumilus maritimus, is an extremely common archaeon living in seawater. It is the first member of the Group 1a Nitrososphaerota (formerly Thaumarchaeota) to be isolated in pure culture. Gene sequences suggest that the Group 1a Nitrososphaerota are ubiquitous with the oligotrophic surface ocean and can be found in most non-coastal marine waters around the planet. It is one of the smallest living organisms at 0.2 micrometers in diameter. Cells in the species N. maritimus are shaped like peanuts and can be found both as individuals and

Halobaculum (common abbreviation: Hbl.) is a genus of archaeans in the family Halorubraceae.

Haloarchaeobius (common abbreviation Hab.) is a genus of halophilic archaea in the family Halobacteriaceae.

Halorientalis is a genus of archaeans in the family Haloarculaceae.

Nitrososphaera is a mesophilic genus of ammonia-oxidizing Crenarchaeota. The first Nitrososphaera organism was discovered in garden soils at the University of Vienna leading to the categorization of a new genus, family, order and class of Archaea. This genus contains three distinct species: N. viennensis, Ca. N. gargensis, and Ca N. evergladensis. Nitrososphaera are chemolithoautotrophs and have important biogeochemical roles as nitrifying organisms.

Halosimplex is a genus of archaeans in the family Halobacteriaceae.

Haladaptatus (common abbreviation Hap.) is a genus of halophilic archaea in the family of Halobacteriaceae. The members of Haladaptatus thrive in environments with salt concentrations approaching saturation

Haloplanus is a genus of archaeans in the family Halobacteriaceae.

Haloterrigena (common abbreviation Htg.) is a genus of archaeans in the family Natrialbaceae.