List of Archaea genera

Last updated

This article lists the genera of the Archaea and also shows taxa of archaea that do not contain genera. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI) [2] unless otherwise noted.

Contents

Phylogeny

For the GTDB phylogeny, National Center for Biotechnology Information (NCBI) taxonomy was initially used to decorate the genome tree via tax2tree. The 16S rRNA-based Greengenes taxonomy is used to supplement the taxonomy particularly in regions of the tree with no cultured representatives. List of Prokaryotic names with Standing in Nomenclature (LPSN) is used as the primary taxonomic authority for establishing naming priorities. Taxonomic ranks are normalised using Phylorank and the taxonomy manually curated to remove polyphyletic groups. [3] [4] [5] [6] [7]

Cladogram was taken from the GTDB release 10-RS226 (16th April 2025). [8] [9] [10]

Archaea

Phylum Microcaldota

Class Microcaldia

Order Microcaldales

  • Family Microcaldaceae Sakai et al. 2023

Phylum "Altarchaeota"

Class "Altarchaeia"

Order "Altarchaeales"

  • Family "Altarchaeaceae" corrig. Probst et al. 2014

Phylum "Iainarchaeota"

"Iainarchaeota" incertae sedis

Class "Iainarchaeia"

Order "Iainarchaeales"

  • Family "Iainarchaeaceae" Rinke et al. 2020

Phylum "Micrarchaeota"

Phylogeny of "Micrarchaeota" [8] [9] [10]
"Norongarragalinales"

"Ca. Norongarragalina"

"Micrarchaeales"
"Micrarchaeaceae"
"Anstonellales"
"Anstonellaceae"

"Ca. Anstonella"

"Bilamarchaeaceae"

"Ca. Bilamarchaeum"

"Gugararchaeales"

"Ca. Gugararchaeum"

"Burarchaeales"

"Ca. Burarchaeum"

"Fermentimicrarchaeales"

"Ca. Fermentimicrarchaeum"

Class "Micrarchaeia"

Order "Norongarragalinales"

  • Family "Norongarragalinaceae" Vázquez-Campos et al. 2021

Order "Micrarchaeales"

  • Family "Micrarchaeaceae" Vázquez-Campos et al. 2021

Order "Anstonellales"

  • Family "Anstonellaceae" Vázquez-Campos et al. 2021
    • "Candidatus Anstonella" Vázquez-Campos et al. 2021
  • Family "Bilamarchaeaceae" Vázquez-Campos et al. 2021

Order "Gugararchaeales"

  • Family "Gugararchaeaceae" Vázquez-Campos et al. 2021

Order "Burarchaeales"

  • Family "Burarchaeaceae" Vázquez-Campos et al. 2021

Order "Fermentimicrarchaeales"

  • Family "Fermentimicrarchaeaceae" Kadnikov et al. 2020 (Sv326)

Phylum "Undinarchaeota"

Class "Undinarchaeia"

Order "Undinarchaeales"

  • Family "Naiadarchaeaceae" Dombrowski et al. 2020
  • Family "Undinarchaeaceae" Dombrowski et al. 2020

Phylum "Huberarchaeaota"

Class "Huberarchaeia"

Order "Huberarchaeales"

  • Family "Huberarchaeaceae" Rinke et al. 2020

Phylum "Aenigmatarchaeota"

Class "Aenigmatarchaeia"

Order "Aenigmatarchaeales"

  • Family "Aenigmatarchaeaceae" corrig. Rinke et al. 2020

Phylum "Nanohalarchaeota"

Class "Nanohalarchaeia"

Order "Nanohalarchaeales"

  • Family "Nanohalarchaeaceae"

Order "Nanohydrothermales"

  • Family "Nanohydrothermaceae" Xie et al. 2022

Order "Nucleotidisoterales"

  • Family "Nanosalenecaceae" Xie et al. 2022
  • Family "Nucleotidisoteraceae" Xie et al. 2022
  • Family "Nucleotidivindicaceae" Xie et al. 2022

Class "Nanohalobiia"

Order "Nanohalobiales"

Phylogeny of "Nanohalobiales" [8] [9] [10]
"Nanohalalkaliarchaeaceae"

"Candidatus Nanohalalkaliarchaeum"

"Nanoanaerosalinaceae"

"Candidatus Asbonarchaeum"

"Candidatus Nanoanaerosalina"

"Nanohalobiaceae"

"Candidatus Nanosalinicola"

"Candidatus Nanohalococcus"

"Candidatus Nanohalobium"

"Candidatus Nanohalovita"

"Candidatus Nanosalina"

Phylum Nanobdellota

Phylogeny of Nanobdellota [8] [9] [10]
Nanobdellales
"Nanoarchaeaceae"

" Nanoarchaeum "

Nanobdellaceae
"Tiddalikarchaeales"
"Tiddalikarchaeaceae"

"Ca. Tiddalikarchaeum"

"Jingweiarchaeales"
"Jingweiarchaeaceae"

"Ca. Jingweiarchaeum"

"JAPDLS01"
"Haiyanarchaeaceae"

"Ca. Haiyanarchaeum"

"Parvarchaeales"
"Parvarchaeaceae"

Class Nanobdellia

Order "Pacearchaeales"

Order "Woesearchaeales"

Order JAPDLS01

  • Family "Haiyanarchaeaceae" Rao et al. 2023

Order "Jingweiarchaeales"

  • Family "Jingweiarchaeaceae" Rao et al. 2023

Order Nanobdellales

  • Family "Nanoarchaeaceae" Huber et al. 2011
  • Family Nanobdellaceae Kato et al. 2022 ["Nanopusillaceae" Huber et al. 2011]
    • Nanobdella Kato et al. 2022 ["Candidatus Nanobsidianus" Castelle et al. 2015; "Candidatus Nanopusillus" Wurch et al. 2016]
    • "Candidatus Nanoclepta" St. John et al. 2019

Order "Tiddalikarchaeales"

  • Family "Tiddalikarchaeaceae" Vázquez-Campos et al. 2021

Order "Parvarchaeales"

Phylum Promethearchaeota

Taxonomy of this group is based on LPSN [1] , and also these works: [11] [12] [13] [14]

Phylogeny of "Asgardarchaeota" [8] [9] [10]

Class "Asgardarchaeia"

Order "Asgardarchaeales"

  • Family "Asgardarchaeaceae" Eme et al. 2023 ex Tamarit et al. 2024

Class "Atabeyarchaeia"

Order "Atabeyarchaeales"

  • Family "Atabeyarchaeaceae" Valentin-Alvaradoet al. 2024

Class "Sifarchaeia"

Order "Sifarchaeales"

  • Family "Sifarchaeaceae" Sun et al. 2021
    • "Candidatus Sifarchaeum" corrig. Farag, Zhao & Biddle 2020

Class "Borrarchaeia"

Order "Borrarchaeales"

  • Family "Borrarchaeaceae" Liu et al. 2021

Class "Wukongarchaeia"

Order "Wukongarchaeales"

  • Family "Wukongarchaeaceae" Liu et al. 2021

Class "Heimdallarchaeia"

Order "Wenzhongarchaeales"

Order "Hodarchaeales"

  • Family "Hodarchaeaceae" Liu et al. 2021

Order "Gerdarchaeales"

Order "Heimdallarchaeales"

  • Family "Kariarchaeaceae" Liu et al. 2021
  • Family "Heimdallarchaeaceae" Wu et al. 2022

Class "Odinarchaeia"

Order "Odinarchaeales"

  • Family "Odinarchaeaceae" Tamarit et al. 2022

Order "Yangjianarchaeales"

Class "Jordarchaeia"

Order "Jordarchaeales"

Class "Freyarchaeia"

Order "Freyarchaeales"

  • Family "Freyarchaeaceae" Valentin-Alvarado et al. 2024

Class "Baldrarchaeia"

Order "Baldrarchaeales"

  • Family "Baldrarchaeaceae" corrig. Liu et al. 2021

Class "Thorarchaeia"

Order "Thorarchaeales"

  • Family "Thorarchaeaceae" (MBG-B)

Class "Hermodarchaeia"

Order "Hermodarchaeales"

  • Family "Hermodarchaeaceae" corrig. Liu et al. 2021

Class "Sleipnirarchaeota"

Class Promethearchaeia

Order "Helarchaeales"

Order Promethearchaeales

Phylogeny of "Sigynarchaeales" [8] [9] [10]
"Sigynarchaeaceae"

"Ca. Sigynarchaeum"

Phylum "Korarchaeota"

Class "Korarchaeia"

Order "Korarchaeales"

Phylum Thermoproteota

Phylogeny of Thermoproteota [8] [9] [10]

Class "Bathyarchaeia"

Order "Bifangarchaeales"

  • Family "Bifangicolaceae" Hou et al. 2023
    • ?"Candidatus Bifangicola" Hou et al. 2023 [3300025546_26]
  • Family "Bifangarchaeaceae" Hou et al. 2023
    • "Candidatus Bifangarchaeum" corrig. Hou et al. 2023 [B24: DTBU01 sp011374155]
  • Family "Bifangistellaceae" Hou et al. 2023
    • "Candidatus Bifangistella" Hou et al. 2023 [DRYS01: DRYS01 sp011367275]

Order "Xuanwuarculales"

  • Family "Mazuisomaceae" Hou et al. 2023
  • Family "Mazuicellaceae" Hou et al. 2023
  • Family "Mazuousiaecae" Hou et al. 2023
  • Family "Xuanwuarculaceae" Hou et al. 2023
    • "Candidatus Xuanwuarcula" Hou et al. 2023 [RBG-16-48-13 sp001775995]

Order "Hecatellales"

Phylogeny of "Hecatellaceae" [8] [9] [10]
  • Family "Hecatellaceae" Rinke et al. 2020

Order "Houtuarculales"

Phylogeny of "Houtuarculales" [8] [9] [10]
"Crenohoutuithermaceae"

"Ca. Crenohoutuithermus"

"Fontihoutuithermaceae"

"Ca. Fontihoutuithermus"

"Aphrohoutuibellaceae"
"Houtuousiaceae"
  • Family "Houtuithermaceae" Hou et al. 2023
  • Family "Marihoutuimonadaceae" Hou et al. 2023
  • Family "Crenohoutuithermaceae" Hou et al. 2023
  • Family "Fontihoutuithermaceae" Hou et al. 2023
  • Family "Aphrohoutuibellaceae" Hou et al. 2023
  • Family "Houtuousiaceae" Hou et al. 2023

Order "Wuzhiqiibiales"

Phylogeny of "Wuzhiqiibiales" [8] [9] [10]
"Wuzhiqiimorphaceae"

"Ca. Wuzhiqiimorpha"

"Wuzhiqiimonadaceae"

"Ca. Wuzhiqiimonas"

"Wuzhiqiibiaceae"

"Ca. Wuzhiqiibium"

  • Family "Wuzhiqiithermaceae" Hou et al. 2023
  • Family "Wuzhiqiitorraceae" Hou et al. 2023
  • Family "Wuzhiqiimorphaceae" Hou et al. 2023
    • "Candidatus Wuzhiqiimorpha" Hou et al. 2023 [PIYN01: PIYN01 sp003601775]
  • Family "Wuzhiqiimonadaceae" Hou et al. 2023
  • Family "Wuzhiqiibiaceae" Hou et al. 2023

Order "Zhuquarculales"

  • Family "Zhuquarculaceae" Hou et al. 2023
  • Family "Zhuquomorphaceae" Hou et al. 2023

Order "Bathyarchaeales"

Phylogeny of "Bathyarchaeales" [8] [9] [10]
"Pontizhurongicolaceae"

"Ca. Pontizhurongicola"

"Hanbarchaeaceae"
"Marizhurongicellaceae"
"Hanbopyraceae"

"Ca. Hanbopyrus"

"Jingweiiplasmataceae"

"Ca. Jingweiiplasma"

"Bathyarchaeaceae"
"Bathycorpusculaceae"

Class Nitrososphaeria

Order "Caldarchaeales"

Phylogeny of "Caldarchaeales" [8] [9] [10]
"Calditenuaceae"

"Ca. Calditenuis"

"Caldarchaeaceae"
"Wolframiiraptoraceae"
  • Family "Calditenuaceae" Balbay et al. 2023
  • Family "Caldarchaeaceae" Rinke et al. 2020
  • Family "Wolframiiraptoraceae" Buessecker et al. 2022

Order "Nitrosomirales"

Order "Geothermarchaeales"

Order PSMU01

Order "Conexivisphaerales"

  • Family "Conexivisphaeraceae" Kato et al. 2021 (THSC Group)

Order Nitrososphaerales

Phylogeny of Nitrososphaerales [8] [9] [10]

Class "Methanomethylicia"

Order "Nezhaarchaeales"

Order "Culexarchaeles"

  • Family "Culexarchaeaceae" Kohtz et al. 2022 ["Methanomediaceae" Berghuis et al. 2019]
    • "Candidatus Culexarchaeum" Kohtz et al. 2022 ["Candidatus Methanomedium" Berghuis et al. 2019]
  • Family "Culexmicrobiaceae" Kohtz et al. 2022

Order "Methanomethylicales"

Class Thermoproteia

Order "Gearchaeales"

  • Family "Gearchaeaceae" corrig.

Order Thermofilales

Order Thermoproteales

Phylogeny of Thermoproteales [8] [9] [10]

Class "Sulfolobia"

Order "Marsarchaeales"

Order Sulfolobales

Phylogeny of Sulfolobales [8] [9] [10]

Phylum "Hadarchaeota"

Class "Persephonarchaeia"

Class "Hadarchaeia"

Order "Hadarchaeales"

  • Family "Cerberiarchaeaceae" Benito Merino et al. 2024
  • Family "Hadarchaeaceae" Chuvochina et al. 2019 ex Chuvochina et al. 2023

Phylum "Hydrothermarchaeota"

Class "Hydrothermarchaeia"

Order "Hydrothermarchaeales"

  • Family BMS3B
  • Family "Hydrothermarchaeaceae" Chuvochina et al. 2019

Phylum Methanobacteriota

Phylogeny of Methanobacteriota [8] [9] [10]

Class "Methanococcia"

Order Methanococcales

Class Methanopyria

Order Methanopyrales

Class Methanobacteriia

Order Methanobacteriales

Class "Theionarchaeia"

Class Thermococci

Phylogeny of Thermococci [8] [9] [10]

Order "Methanofastidiosales"

  • Family "Methanofastidiosaceae" Rinke et al. 2020

Order Thermococcales

Phylum Thermoplasmatota

Phylogeny of Thermoplasmatota [8] [9] [10]

Class "Izemarchaea"

Order "Thermoprofundales"

  • (MBG-D, E2)

Class "Poseidoniia"

Order MGIII

Order "Poseidoniales"

  • Family "Poseidoniaceae" corrig. Rinke et al. 2019
  • Family "Thalassarchaeaceae" corrig. Rinke et al. 2019

Class Thermoplasmata

Order "Lunaplasmatales"

  • Family "Lunaplasmataceae" Zinke et al. 2021

Order "Proteinoplasmatales"

  • (SG8-5)

Order "Yaplasmatales"

  • (RBG-16-68-12)

Order "Gimiplasmatales"

  • Family "Gimiplasmataceae" Hu et al. 2020

Order "Sysuiplasmatales"

  • Family "Sysuiplasmataceae" Yuan et al. 2021

Order Methanomassiliicoccales

Phylogeny of Methanomassiliicoccales [8] [9] [10]

Order "Halarchaeoplasmatales"

Phylogeny of "Halarchaeoplasmatales" [8] [9] [10]

"Candidatus Haladaptiplasma"

"Candidatus Halarchaeoplasma"

"Candidatus Natronoplasma"

"Candidatus Saliniplasma"

Order "Lutacidiplasmatales"

  • Family "Lutacidiplasmataceae" Sheridan et al. 2022

Order "Aciduliprofundales"

  • Family "Aciduliprofundaceae" Rinke et al. 2020

Order Thermoplasmatales

Phylogeny of Thermoplasmatales [8] [9] [10]

Phylum Halobacteriota

Phylogeny of Halobacteriota [8] [9] [10]

Order "Methanoflorentales"

Class "Methanonatronarchaeia"

Order "Methanonatronarchaeales"

Class "Methanoliparia"

Order "Methanoliparales"

Class "Archaeoglobia"

Phylogeny of "Archaeoglobia" [8] [9] [10]
"Mnemosynellales"
"Mnemosynellaceae"

"Candidatus Mnemosynella"

Archaeoglobales

Order "Mnemosynellales"

  • Family "Mnemosynellaceae" Adam et al. 2022

Order Archaeoglobales

Class "Syntropharchaeia"

Phylogeny of "Syntropharchaeia" [8] [9] [10]
"Syntropharchaeales"
"Syntropharchaeaceae"

"Candidatus Syntropharchaeum"

"Alkanophagales"
"Alkanophagaceae"

"Candidatus Alkanophaga"

"Methanospiraraceae"

"Candidatus Methanoxibalbensis"

"Candidatus Methanospirare"

Order "Syntropharchaeales"

  • Family "Syntropharchaeaceae" corrig. (ANME-2 cluster)

Order "Alkanophagales"

  • Family "Methanophagaceae" Chadwick et al. 2022
  • Family ?"Veteromethanophagaceae" Vulcano et al. 2022
  • Family "Alkanophagaceae" [B39-G2]
  • Family "Methanospiraraceae" Laso-Pérez et al. 2022

Class Methanocellia

Order Methanocellales

Phylogeny of Methanocellales [8] [9] [10]

Class Methanosarcinia

Order Methanotrichales

Order Methanosarcinales

Phylogeny of Methanosarcinales [8] [9] [10]

Class "Methanomicrobia"

Order Methanomicrobiales

Phylogeny of Methanomicrobiales [8] [9] [10]

Class "Hikarchaeia"

Order "Hikarchaeales"

  • Family "Hikarchaeaceae" Martijn et al. 2020 (MG-IV)

Class "Ordosarchaeia"

Order "Ordosarchaeales"

  • Family "Ordosarchaeaceae" Zhao et al. 2024

Class Halobacteria

Order Halorutilales

  • Family Halorutilaceae Durán-Viseras et al. 2023

Order Halobacteriales

Phylogeny of Halobacteriales [8] [9] [10]
Phylogeny of Natrialbaceae [8] [9] [10]
Phylogeny of Haloferacaceae [8] [9] [10]

Incertae sedis

Taxonomy of this group is based on LPSN [1] , and also this work: [16]

See also

References

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