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) and National Center for Biotechnology Information (NCBI) unless otherwise noted.

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.

Cladogram was taken from the GTDB release 11-RS232 (15th April 2026).

Archaea "Undinarchaeota" "Huberarchaeaota" "Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota" Nanobdellota "Altarchaeota" "Iainarchaeota" "Micrarchaeota" "Methanococcia" {AGJL01} "Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati PromethearchaeotaNanobdellati Methanobacteriati Thermoproteati
Archaea"Undinarchaeota" "Huberarchaeaota" "Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota" Nanobdellota "Altarchaeota" "Iainarchaeota" "Micrarchaeota" "Methanococcia" {AGJL01} "Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Undinarchaeota"
"Huberarchaeaota" "Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota" Nanobdellota "Altarchaeota" "Iainarchaeota" "Micrarchaeota" "Methanococcia" {AGJL01} "Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Huberarchaeaota" "Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota" Nanobdellota
"Huberarchaeaota" "Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota"
"Huberarchaeaota"
"Aenigmarchaeota" "Terrarchaeota" "Nanohalarchaeota"
"Aenigmarchaeota"
"Terrarchaeota" "Nanohalarchaeota"
"Terrarchaeota"
"Nanohalarchaeota"
Nanobdellota
"Altarchaeota" "Iainarchaeota" "Micrarchaeota" "Methanococcia" {AGJL01} "Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Altarchaeota" "Iainarchaeota" "Micrarchaeota"
"Altarchaeota" "Iainarchaeota" "Micrarchaeota"
"Altarchaeota"
"Iainarchaeota" "Micrarchaeota"
"Iainarchaeota"
"Micrarchaeota"
"Methanococcia" {AGJL01} "Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Methanococcia" {AGJL01}
"Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Methanopyria" {JAADCQ01} "Hydrothermarchaeota" "Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota
"Methanopyria" {JAADCQ01} "Hydrothermarchaeota"
"Methanopyria" {JAADCQ01}
"Hydrothermarchaeota"
"Hadarchaeota" "Thermococcia" {"Methanobacteriota B"} Methanobacteriota
"Hadarchaeota" "Thermococcia" {"Methanobacteriota B"}
"Hadarchaeota"
"Thermococcia" {"Methanobacteriota B"}
Methanobacteriota
Thermoplasmatota Halobacteriota "Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
Thermoplasmatota Halobacteriota
Thermoplasmatota
Halobacteriota
"Korarchaeota" Thermoproteota Promethearchaeati Promethearchaeota
"Korarchaeota"
Thermoproteota Promethearchaeati Promethearchaeota
Thermoproteota
Promethearchaeati Promethearchaeota
PromethearchaeatiPromethearchaeota

Phylum Microcaldota

Class Microcaldia

Order Microcaldales

  • Family Microcaldaceae Sakai et al. 2023 Microcaldus Sakai et al. 2023

Phylum "Undinarchaeota"

Phylogeny of "Undinarchaeota"
"Undinarchaeia" "Undinarchaeales" "Naiadarchaeaceae" "Ca. Naiadarchaeum" "Undinarchaeaceae" "Ca. Undinarchaeum"
"Undinarchaeia""Undinarchaeales" "Naiadarchaeaceae" "Ca. Naiadarchaeum" "Undinarchaeaceae" "Ca. Undinarchaeum"
"Undinarchaeales""Naiadarchaeaceae" "Ca. Naiadarchaeum" "Undinarchaeaceae" "Ca. Undinarchaeum"
"Naiadarchaeaceae""Ca. Naiadarchaeum"
"Undinarchaeaceae""Ca. Undinarchaeum"

Class "Undinarchaeia"

Order "Undinarchaeales"

  • Family "Naiadarchaeaceae" Dombrowski et al. 2020 "Candidatus Naiadarchaeum" Dombrowski et al. 2020
  • Family "Undinarchaeaceae" Dombrowski et al. 2020 "Candidatus Undinarchaeum" Dombrowski et al. 2020

Phylum "Huberarchaeaota"

Class "Huberarchaeia"

Order "Huberarchaeales"

  • Family "Huberarchaeaceae" Rinke et al. 2020 "Candidatus Huberarchaeum" corrig. Schwank et al. 2019

Phylum " Aenigmatarchaeota "

Phylogeny of "Aenigmatarchaeota"
"Aenigmatarchaeia" "Aenigmatarchaeaceae" "Ca. Aenigmatarchaeum" PWEA01 "Ca. Haloaenigmatarchaeum"
"Aenigmatarchaeia""Aenigmatarchaeaceae" "Ca. Aenigmatarchaeum" PWEA01 "Ca. Haloaenigmatarchaeum"
"Aenigmatarchaeaceae""Ca. Aenigmatarchaeum"
PWEA01"Ca. Haloaenigmatarchaeum"

Class "Aenigmatarchaeia"

Order "Aenigmatarchaeales"

  • Family "Aenigmatarchaeaceae" corrig. Rinke et al. 2020 "Candidatus Aenigmatarchaeum" corrig. Rinke et al. 2013

Order PWEA01

  • Family "Haloaenigmatarchaeaceae" Gutiérrez-Preciado et al. 2024 [PWEA01] "Candidatus Haloaenigmatarchaeum" Gutiérrez-Preciado et al. 2024

Phylum "Terrarchaeota"

Phylogeny of "Terrarchaeota"
"Terrarchaeia" "Terrarchaeales" "Marinivulcanaceae" "Ca. Marinivulcanus" "Terrarchaeaceae" "Ca. Terrarchaeum"
"Terrarchaeia""Terrarchaeales" "Marinivulcanaceae" "Ca. Marinivulcanus" "Terrarchaeaceae" "Ca. Terrarchaeum"
"Terrarchaeales""Marinivulcanaceae" "Ca. Marinivulcanus" "Terrarchaeaceae" "Ca. Terrarchaeum"
"Marinivulcanaceae""Ca. Marinivulcanus"
"Terrarchaeaceae""Ca. Terrarchaeum"

Class "Terrarchaeia"

Order "Terrarchaeales"

  • Family "Marinivulcanaceae" Hamm et al. 2026 [WAPT01] "Candidatus Marinivulcanus" Hamm et al. 2026 [WAPT01]
  • Family "Terrarchaeaceae" Hamm et al. 2026 ["Caliditerrarchaeaceae" Hamm et al. 2025; GLR71] "Candidatus Terrarchaeum" Hamm et al. 2026 ["Candidatus Caliditerrarchaeum" Hamm et al. 2025; GLR71]

Phylum " Nanohalarchaeota "

Phylogeny of "Nanohalarchaeota"
"Nanohalobiia" "Nanohalobiales" "Nanohalalkaliarchaeaceae" "Ca. Nanohalalkaliarchaeum" "Nanoanaerosalinaceae" "Ca. Asbonarchaeum" "Ca. Nanoanaerosalina" "Nanohalobiaceae" "Ca. Nanosalinicola" "Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Nanohalobiia""Nanohalobiales" "Nanohalalkaliarchaeaceae" "Ca. Nanohalalkaliarchaeum" "Nanoanaerosalinaceae" "Ca. Asbonarchaeum" "Ca. Nanoanaerosalina" "Nanohalobiaceae" "Ca. Nanosalinicola" "Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Nanohalobiales""Nanohalalkaliarchaeaceae" "Ca. Nanohalalkaliarchaeum" "Nanoanaerosalinaceae" "Ca. Asbonarchaeum" "Ca. Nanoanaerosalina" "Nanohalobiaceae" "Ca. Nanosalinicola" "Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Nanohalalkaliarchaeaceae" "Ca. Nanohalalkaliarchaeum" "Nanoanaerosalinaceae" "Ca. Asbonarchaeum" "Ca. Nanoanaerosalina"
"Nanohalalkaliarchaeaceae""Ca. Nanohalalkaliarchaeum"
"Nanoanaerosalinaceae""Ca. Asbonarchaeum" "Ca. Nanoanaerosalina"
"Ca. Asbonarchaeum"
"Ca. Nanoanaerosalina"
"Nanohalobiaceae" "Ca. Nanosalinicola" "Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Nanohalobiaceae""Ca. Nanosalinicola" "Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Ca. Nanosalinicola"
"Ca. Nanohalococcus" "Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Ca. Nanohalococcus"
"Ca. Nanosalina" "Ca. Nanohalobium" "Ca. Nanohalovita"
"Ca. Nanosalina"
"Ca. Nanohalobium" "Ca. Nanohalovita"
"Ca. Nanohalobium"
"Ca. Nanohalovita"

Class "Nanohalarchaeia"

Order "Nanohalarchaeales"

  • Family "Nanohalarchaeaceae" ?"Candidatus Nanohalarchaeum" corrig. Hamm et al. 2019 ?"Candidatus Nanopetraeus" corrig. Crits‐Christoph et al. 2016

Order "Nanohydrothermales"

  • Family "Nanohydrothermaceae" Xie et al. 2022 ?"Candidatus Nanohydrothermus" Xie et al. 2022

Order "Nucleotidisoterales"

  • Family "Nanosalenecaceae" Xie et al. 2022 ?"Candidatus Nanosalenecus" Xie et al. 2022
  • Family "Nucleotidisoteraceae" Xie et al. 2022 ?"Candidatus Nucleotidisoter" Xie et al. 2022
  • Family "Nucleotidivindicaceae" Xie et al. 2022 ?"Nucleotidivindex" Xie et al. 2022

Class "Nanohalobiia"

Order "Nanohalobiales"

  • Family "Nanohalalkaliarchaeaceae" La Cono et al. 2020 "Candidatus Nanohalalkaliarchaeum" Ghai et al. 2011
  • Family "Nanoanaerosalinaceae" Zhao et al. 2022 "Candidatus Asbonarchaeum" Baker et al. 2024 "Candidatus Nanoanaerosalina" Zhao et al. 2022
  • Family "Nanohalobiaceae" La Cono et al. 2020 ?"Candidatus Haloredivivus" Ghai et al. 2011 "Candidatus Nanohalobium" La Cono et al. 2020 "Candidatus Nanohalococcus" Reva et al. 2023 "Candidatus Nanosalina" Narasingarao et al. 2012 "Candidatus Nanosalinicola" corrig. Narasingarao et al. 2012 "Candidatus Nanohalovita" Reva et al. 2023

Phylum Nanobdellota

Phylogeny of Nanobdellota
Nanobdellia "Tiddalikarchaeales" "Tiddalikarchaeaceae" "Ca. Tiddalikarchaeum" "JAPDLS01" "Haiyanarchaeaceae" "Ca. Haiyanarchaeum" "Jingweiarchaeales" "Jingweiarchaeaceae" "Ca. Jingweiarchaeum" "Parvarchaeales" "Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum" "Pacearchaeales" "Woesearchaeales" Nanobdellales "Nanoarchaeaceae" "Nanoarchaeum" Nanobdellaceae "Ca. Nanoclepta" Nanobdella
Nanobdellia"Tiddalikarchaeales" "Tiddalikarchaeaceae" "Ca. Tiddalikarchaeum" "JAPDLS01" "Haiyanarchaeaceae" "Ca. Haiyanarchaeum" "Jingweiarchaeales" "Jingweiarchaeaceae" "Ca. Jingweiarchaeum" "Parvarchaeales" "Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum" "Pacearchaeales" "Woesearchaeales" Nanobdellales "Nanoarchaeaceae" "Nanoarchaeum" Nanobdellaceae "Ca. Nanoclepta" Nanobdella
"Tiddalikarchaeales" "Tiddalikarchaeaceae" "Ca. Tiddalikarchaeum" "JAPDLS01" "Haiyanarchaeaceae" "Ca. Haiyanarchaeum" "Jingweiarchaeales" "Jingweiarchaeaceae" "Ca. Jingweiarchaeum" "Parvarchaeales" "Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"Tiddalikarchaeales" "Tiddalikarchaeaceae" "Ca. Tiddalikarchaeum"
"Tiddalikarchaeales""Tiddalikarchaeaceae" "Ca. Tiddalikarchaeum"
"Tiddalikarchaeaceae""Ca. Tiddalikarchaeum"
"JAPDLS01" "Haiyanarchaeaceae" "Ca. Haiyanarchaeum" "Jingweiarchaeales" "Jingweiarchaeaceae" "Ca. Jingweiarchaeum" "Parvarchaeales" "Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"JAPDLS01" "Haiyanarchaeaceae" "Ca. Haiyanarchaeum" "Jingweiarchaeales" "Jingweiarchaeaceae" "Ca. Jingweiarchaeum"
"JAPDLS01""Haiyanarchaeaceae" "Ca. Haiyanarchaeum"
"Haiyanarchaeaceae""Ca. Haiyanarchaeum"
"Jingweiarchaeales""Jingweiarchaeaceae" "Ca. Jingweiarchaeum"
"Jingweiarchaeaceae""Ca. Jingweiarchaeum"
"Parvarchaeales" "Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"Parvarchaeales""Parvarchaeaceae" "Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"Parvarchaeaceae""Ca. Rehaiarchaeum" "Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"Ca. Rehaiarchaeum"
"Ca. Acidifodinimicrobium" "Ca. Parvarchaeum"
"Ca. Acidifodinimicrobium"
"Ca. Parvarchaeum"
"Pacearchaeales" "Woesearchaeales" Nanobdellales "Nanoarchaeaceae" "Nanoarchaeum" Nanobdellaceae "Ca. Nanoclepta" Nanobdella
"Pacearchaeales" "Woesearchaeales"
"Pacearchaeales"
"Woesearchaeales"
Nanobdellales "Nanoarchaeaceae" "Nanoarchaeum" Nanobdellaceae "Ca. Nanoclepta" Nanobdella
Nanobdellales"Nanoarchaeaceae" "Nanoarchaeum" Nanobdellaceae "Ca. Nanoclepta" Nanobdella
"Nanoarchaeaceae""Nanoarchaeum"
Nanobdellaceae"Ca. Nanoclepta" Nanobdella
"Ca. Nanoclepta"
Nanobdella

Class Nanobdellia

Order "Pacearchaeales"

Order "Woesearchaeales"

Order Nanobdellales

  • Family "Nanoarchaeaceae" Huber et al. 2011 "Nanoarchaeum" Huber et al. 2002
  • Family Nanobdellaceae Kato et al. 2022 ["Nanopusillaceae" Huber et al. 2011] Nanobdella Kato et al. 2022 ["Ca. Nanobsidianus" Castelle et al. 2015; "Ca. Nanopusillus" Wurch et al. 2016] "Candidatus Nanoclepta" St. John et al. 2019

Order "Tiddalikarchaeales"

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

Order JAPDLS01

  • Family "Haiyanarchaeaceae" Rao et al. 2023 "Candidatus Haiyanarchaeum" Rao et al. 2023 ["Ca. Tinosarcha" Pallen, Rodriguez-R & Alikhan 2022]

Order "Jingweiarchaeales"

  • Family "Jingweiarchaeaceae" Rao et al. 2023 "Candidatus Jingweiarchaeum" Rao et al. 2023

Order "Parvarchaeales"

  • Family "Parvarchaeaceae" Rinke et al. 2020 "Candidatus Acidifodinimicrobium" Luo et al. 2020 "Candidatus Parvarchaeum" Baker et al. 2010 (ARMAN 4 & 5) "Candidatus Rehaiarchaeum" Rao et al. 2023

Phylum " Altarchaeota "

Class "Altarchaeia"

Order "Altarchaeales"

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

Phylum " Iainarchaeota "

Phylogeny of "Iainarchaeota"
"Iainarchaeia" "Forterreales" "Forterreaceae" "Ca. Forterrea" "Iainarchaeales" "Iainarchaeaceae" "Ca. Iainarchaeum"
"Iainarchaeia""Forterreales" "Forterreaceae" "Ca. Forterrea" "Iainarchaeales" "Iainarchaeaceae" "Ca. Iainarchaeum"
"Forterreales""Forterreaceae" "Ca. Forterrea"
"Forterreaceae""Ca. Forterrea"
"Iainarchaeales""Iainarchaeaceae" "Ca. Iainarchaeum"
"Iainarchaeaceae""Ca. Iainarchaeum"

Class "Iainarchaeia"

Order "Forterreales"

  • Family "Forterreaceae" Pallen, Rodriguez-R & Alikhan 2022 [CSSED10-239] "Candidatus Forterrea" Probst & Banfield 2017

Order "Iainarchaeales"

  • Family "Iainarchaeaceae" Rinke et al. 2020 "Candidatus Iainarchaeum" Rinke et al. 2013

Phylum " Micrarchaeota "

Phylogeny of "Micrarchaeota"
"Micrarchaeia" "Norongarragalinales" "Norongarragalinaceae" "Ca. Norongarragalina" "Micrarchaeales" "Micrarchaeaceae" "Ca. Mancarchaeum" "Ca. Micrarchaeum" "Anstonellales" "Anstonellaceae" "Ca. Anstonella" "Bilamarchaeaceae" "Ca. Bilamarchaeum" "Burarchaeales" "Gugararchaeaceae" "Ca. Gugararchaeum" "Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Micrarchaeia""Norongarragalinales" "Norongarragalinaceae" "Ca. Norongarragalina" "Micrarchaeales" "Micrarchaeaceae" "Ca. Mancarchaeum" "Ca. Micrarchaeum" "Anstonellales" "Anstonellaceae" "Ca. Anstonella" "Bilamarchaeaceae" "Ca. Bilamarchaeum" "Burarchaeales" "Gugararchaeaceae" "Ca. Gugararchaeum" "Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Norongarragalinales" "Norongarragalinaceae" "Ca. Norongarragalina"
"Norongarragalinales""Norongarragalinaceae" "Ca. Norongarragalina"
"Norongarragalinaceae""Ca. Norongarragalina"
"Micrarchaeales" "Micrarchaeaceae" "Ca. Mancarchaeum" "Ca. Micrarchaeum" "Anstonellales" "Anstonellaceae" "Ca. Anstonella" "Bilamarchaeaceae" "Ca. Bilamarchaeum" "Burarchaeales" "Gugararchaeaceae" "Ca. Gugararchaeum" "Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Micrarchaeales" "Micrarchaeaceae" "Ca. Mancarchaeum" "Ca. Micrarchaeum"
"Micrarchaeales""Micrarchaeaceae" "Ca. Mancarchaeum" "Ca. Micrarchaeum"
"Micrarchaeaceae""Ca. Mancarchaeum" "Ca. Micrarchaeum"
"Ca. Mancarchaeum"
"Ca. Micrarchaeum"
"Anstonellales" "Anstonellaceae" "Ca. Anstonella" "Bilamarchaeaceae" "Ca. Bilamarchaeum" "Burarchaeales" "Gugararchaeaceae" "Ca. Gugararchaeum" "Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Anstonellales""Anstonellaceae" "Ca. Anstonella" "Bilamarchaeaceae" "Ca. Bilamarchaeum"
"Anstonellaceae""Ca. Anstonella"
"Bilamarchaeaceae""Ca. Bilamarchaeum"
"Burarchaeales""Gugararchaeaceae" "Ca. Gugararchaeum" "Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Gugararchaeaceae" "Ca. Gugararchaeum"
"Gugararchaeaceae""Ca. Gugararchaeum"
"Burarchaeaceae" "Ca. Burarchaeum" "Fermentimicrarchaeaceae" "Ca. Fermentimicrarchaeum"
"Burarchaeaceae""Ca. Burarchaeum"
"Fermentimicrarchaeaceae""Ca. Fermentimicrarchaeum"

Class "Micrarchaeia"

Order "Norongarragalinales"

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

Order "Micrarchaeales"

  • Family "Micrarchaeaceae" Vázquez-Campos et al. 2021 "Candidatus Mancarchaeum" Golyshina et al. 2017 "Candidatus Micrarchaeum" Baker et al. 2010

Order "Anstonellales"

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

Order "Burarchaeales"

  • Family "Gugararchaeaceae" Vázquez-Campos et al. 2021 "Candidatus Gugararchaeum" Vázquez-Campos et al. 2021
  • Family "Burarchaeaceae" Vázquez-Campos et al. 2021 "Candidatus Burarchaeum" Vázquez-Campos et al. 2021
  • Family "Fermentimicrarchaeaceae" Kadnikov et al. 2020 (Sv326) "Candidatus Fermentimicrarchaeum" Kadnikov et al. 2020

Phylum Promethearchaeota

Taxonomy of this group is based on LPSN, and also these works:

Phylogeny of Promethearchaeota
"Asgardarchaeia" "Asgardarchaeales" "Thorarchaeia" "Thorarchaeales" "Atabeyarchaeia" "Atabeyarchaeales" "Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales" "Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales "Borrarchaeia" "Borrarchaeales" "Sifarchaeales" "Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Asgardarchaeia" "Asgardarchaeales" "Thorarchaeia" "Thorarchaeales" "Atabeyarchaeia" "Atabeyarchaeales" "Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales" "Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales "Borrarchaeia" "Borrarchaeales" "Sifarchaeales" "Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Asgardarchaeia" "Asgardarchaeales" "Thorarchaeia" "Thorarchaeales"
"Asgardarchaeia""Asgardarchaeales"
"Thorarchaeia""Thorarchaeales"
"Atabeyarchaeia" "Atabeyarchaeales" "Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales" "Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales "Borrarchaeia" "Borrarchaeales" "Sifarchaeales" "Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Atabeyarchaeia" "Atabeyarchaeales"
"Atabeyarchaeia""Atabeyarchaeales"
"Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales" "Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales "Borrarchaeia" "Borrarchaeales" "Sifarchaeales" "Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales" "Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales
"Baldrarchaeia" "Baldrarchaeales" "Jordiarchaeia" "Jordiarchaeales"
"Baldrarchaeia""Baldrarchaeales"
"Jordiarchaeia""Jordiarchaeales"
"Odinarchaeia" "Odinarchaeales" "Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales
"Odinarchaeia" "Odinarchaeales"
"Odinarchaeia""Odinarchaeales"
"Hermodarchaeia" "Hermodarchaeales" Promethearchaeia "Helarchaeales" Promethearchaeales
"Hermodarchaeia""Hermodarchaeales"
Promethearchaeia"Helarchaeales" Promethearchaeales
"Helarchaeales"
Promethearchaeales
"Borrarchaeia" "Borrarchaeales" "Sifarchaeales" "Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Borrarchaeia" "Borrarchaeales" "Sifarchaeales"
"Borrarchaeia""Borrarchaeales" "Sifarchaeales"
"Borrarchaeales"
"Sifarchaeales"
"Wukongarchaeia" "Wukongarchaeales" "Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Wukongarchaeia" "Wukongarchaeales"
"Wukongarchaeia""Wukongarchaeales"
"Njordarchaeia" "Njordarchaeales" "Heimdallarchaeia" "Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Njordarchaeia""Njordarchaeales"
"Heimdallarchaeia""Hodarchaeales" "Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Hodarchaeales"
"Gerdarchaeales" (JABLTI01) "Heimdallarchaeales"
"Gerdarchaeales" (JABLTI01)
"Heimdallarchaeales"

Promethearchaeota incertae sedis

  • ?"Friggarchaeota" Caceres 2019
  • ?"Gefionarchaeota" Caceres 2019
  • ?"Idunnarchaeota" Caceres 2019
  • ?"Kexuearchaeota" Cai et al. 2021
  • ?"Sleipnirarchaeota" Kioukis et al. 2025
  • ?"Candidatus Balderarchaeum" Xie et al. 2022
  • ?"Candidatus Ranarchaeum" Appler et al. 2026
  • ?"Candidatus Sukunaarchaeum" Harada et al. 2025
  • ?"Candidatus Tyrarchaeum" Xie et al. 2022

Class "Asgardarchaeia"

Order "Asgardarchaeales"

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

Class " Thorarchaeia "

Order "Thorarchaeales"

  • Family "Thorarchaeaceae" (MBG-B)

Class "Atabeyarchaeia"

Order "Atabeyarchaeales"

  • Family "Atabeyarchaeaceae" Valentin-Alvaradoet al. 2024 "Candidatus Atabeyarchaeum" Valentin-Alvarado et al. 2024

Class "Baldrarchaeia"

Order "Baldrarchaeales"

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

Class "Jordarchaeia"

Order "Jordarchaeales"

  • Family "Freyrarchaeaceae" Xie et al. 2022 "Candidatus Freyrarchaeum" Xie et al. 2022
  • Family "Jordarchaeaceae" Sun et al. 2021 "Candidatus Jordarchaeum" Sun et al. 2021 ["Ca. Freyarchaeum" (sic) Valentin-Alvarado et al. 2024]

Class "Odinarchaeia"

Order "Odinarchaeales"

  • Family "Odinarchaeaceae" Tamarit et al. 2022 "Candidatus Odinarchaeum" Tamarit et al. 2022

Order " Yangjianarchaeales "

Class "Hermodarchaeia"

Order "Hermodarchaeales"

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

Class Promethearchaeia

Order "Helarchaeales"

Order Promethearchaeales

Phylogeny of "Promethearchaeales"
"Sigynarchaeaceae" "Ca. Sigynarchaeum" Promethearchaeaceae Prometheoarchaeum "Ca. Harpocratesius" "Ca. Lokiarchaeum"
"Sigynarchaeaceae" "Ca. Sigynarchaeum" Promethearchaeaceae Prometheoarchaeum "Ca. Harpocratesius" "Ca. Lokiarchaeum"
"Sigynarchaeaceae""Ca. Sigynarchaeum"
PromethearchaeaceaePrometheoarchaeum "Ca. Harpocratesius" "Ca. Lokiarchaeum"
Prometheoarchaeum
"Ca. Harpocratesius" "Ca. Lokiarchaeum"
"Ca. Harpocratesius"
"Ca. Lokiarchaeum"
  • Family "Sigynarchaeaceae" Xie et al. 2022 "Candidatus Sigynarchaeum" Xie et al. 2022
  • Family Promethearchaeaceae Imachi et al. 2024 "Candidatus Harpocratesius" Wu et al. 2022 "Candidatus Lokiarchaeum" corrig. Spang et al. 2015 (MBGB, DSAG) ?Nerearchaeum Nobs et al. 2026 Promethearchaeum Imachi et al. 2024

Class "Borrarchaeia"

Order "Sifarchaeales"

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

Order "Borrarchaeales"

  • Family "Borrarchaeaceae" Liu et al. 2021 "Candidatus Borrarchaeum" Liu et al. 2021

Class "Wukongarchaeia"

Order "Wukongarchaeales"

  • Family "Wukongarchaeaceae" Liu et al. 2021 "Candidatus Wukongarchaeum" Liu et al. 2021

Class "Njordarchaeia"

Order "Njordarchaeales"

  • Family "Panguiarchaeaceae" Qu et al. 2023 "Panguiarchaeum" Qu et al. 2023
  • Family "Njordarchaeaceae" Xie et al. 2022 "Candidatus Njordarchaeum" Xie et al. 2022

Class "Heimdallarchaeia"

  • ?"Candidatus Yibarchaeum" MacLeod et al. 2025

Order " Wenzhongarchaeales "

Order "Hodarchaeales"

  • Family "Hodarchaeaceae" Liu et al. 2021 "Candidatus Hodarchaeum" Liu et al. 2021
  • Family "Margulisarchaeaceae" Imachi et al. 2025 ?"Candidatus Flexarchaeum" Imachi et al. 2025 ?"Candidatus Margulisarchaeum" Imachi et al. 2025

Order "Gerdarchaeales"

Order "Heimdallarchaeales"

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

Phylum " Korarchaeota "

Phylogeny of "Korarchaeota"
"Korarchaeia" "Korarchaeaceae" "Ca. Korarchaeum" "Ca. Methanodesulfokora"
"Korarchaeia""Korarchaeaceae" "Ca. Korarchaeum" "Ca. Methanodesulfokora"
"Korarchaeaceae""Ca. Korarchaeum" "Ca. Methanodesulfokora"
"Ca. Korarchaeum"
"Ca. Methanodesulfokora"

Class "Korarchaeia"

Order "Korarchaeales"

  • Family "Korarchaeaceae" Rinke et al. 2020 "Candidatus Korarchaeum" Elkins et al. 2008 "Candidatus Methanodesulfokora" McKay et al. 2019

Phylum Thermoproteota

Phylogeny of Thermoproteota
"BAT" CALKCG01 "Bifangarchaeales" "Bathyarchaeia" "Xuanwuarculales" "Hecatellales" "Houtuarculales" "Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales" Nitrososphaeria_A "Caldarchaeales" Nitrososphaeria "Geothermarchaeales" PSMU01 Conexivisphaerales Nitrososphaerales "Sulfobacteria" Methanosuratincolia "Methanonezhaarchaeales" "Culexarchaeales" Methanosuratincolales "Thermoproteia" "Gearchaeales" Thermofilales Thermoproteales "Sulfolobia" "Tardisphaerales" Sulfolobales
"BAT" CALKCG01 "Bifangarchaeales" "Bathyarchaeia" "Xuanwuarculales" "Hecatellales" "Houtuarculales" "Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales" Nitrososphaeria_A "Caldarchaeales" Nitrososphaeria "Geothermarchaeales" PSMU01 Conexivisphaerales Nitrososphaerales "Sulfobacteria" Methanosuratincolia "Methanonezhaarchaeales" "Culexarchaeales" Methanosuratincolales "Thermoproteia" "Gearchaeales" Thermofilales Thermoproteales "Sulfolobia" "Tardisphaerales" Sulfolobales
"BAT"CALKCG01 "Bifangarchaeales" "Bathyarchaeia" "Xuanwuarculales" "Hecatellales" "Houtuarculales" "Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales" Nitrososphaeria_A "Caldarchaeales" Nitrososphaeria "Geothermarchaeales" PSMU01 Conexivisphaerales Nitrososphaerales
CALKCG01 "Bifangarchaeales" "Bathyarchaeia" "Xuanwuarculales" "Hecatellales" "Houtuarculales" "Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales"
CALKCG01"Bifangarchaeales"
"Bathyarchaeia""Xuanwuarculales" "Hecatellales" "Houtuarculales" "Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales"
"Xuanwuarculales" "Hecatellales" "Houtuarculales"
"Xuanwuarculales"
"Hecatellales" "Houtuarculales"
"Hecatellales"
"Houtuarculales"
"Wuzhiqiibiales" "Zhuquarculales" "Bathyarchaeales"
"Wuzhiqiibiales"
"Zhuquarculales" "Bathyarchaeales"
"Zhuquarculales"
"Bathyarchaeales"
Nitrososphaeria_A "Caldarchaeales" Nitrososphaeria "Geothermarchaeales" PSMU01 Conexivisphaerales Nitrososphaerales
Nitrososphaeria_A"Caldarchaeales"
Nitrososphaeria"Geothermarchaeales" PSMU01 Conexivisphaerales Nitrososphaerales
"Geothermarchaeales"
PSMU01 Conexivisphaerales Nitrososphaerales
PSMU01
Conexivisphaerales Nitrososphaerales
Conexivisphaerales
Nitrososphaerales
"Sulfobacteria"Methanosuratincolia "Methanonezhaarchaeales" "Culexarchaeales" Methanosuratincolales "Thermoproteia" "Gearchaeales" Thermofilales Thermoproteales "Sulfolobia" "Tardisphaerales" Sulfolobales
Methanosuratincolia "Methanonezhaarchaeales" "Culexarchaeales" Methanosuratincolales "Thermoproteia" "Gearchaeales" Thermofilales Thermoproteales
Methanosuratincolia"Methanonezhaarchaeales" "Culexarchaeales" Methanosuratincolales
"Methanonezhaarchaeales" "Culexarchaeales"
"Methanonezhaarchaeales"
"Culexarchaeales"
Methanosuratincolales
"Thermoproteia""Gearchaeales" Thermofilales Thermoproteales
"Gearchaeales" Thermofilales Thermoproteales
"Gearchaeales"
Thermofilales Thermoproteales
Thermofilales
Thermoproteales
"Sulfolobia" "Tardisphaerales" Sulfolobales
"Sulfolobia""Tardisphaerales" Sulfolobales
"Tardisphaerales"
Sulfolobales

Thermoproteota Incertae sedis

"Brockiarchaeota"

Class CALKCG01

Order "Bifangarchaeales"

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

Class " Bathyarchaeia "

Order "Xuanwuarculales"

  • Family "Mazuisomaceae" Hou et al. 2023 ?"Candidatus Mazuisoma" Hou et al. 2023
  • Family "Mazuicellaceae" Hou et al. 2023 ?"Candidatus Mazuibellus" Hou et al. 2023 ?"Candidatus Mazuicella" Hou et al. 2023
  • Family "Mazuousiaecae" Hou et al. 2023 ?"Candidatus Mazuarcula" Hou et al. 2023 ?"Candidatus Mazuousia" 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 "Hecatellales"
"Hecatellaceae" "Ca. Hecatella" "Ca. Jinwuarcula" "Ca. Jinwuicola" "Ca. Jinwuimorpha"
"Hecatellaceae""Ca. Hecatella" "Ca. Jinwuarcula" "Ca. Jinwuicola" "Ca. Jinwuimorpha"
"Ca. Hecatella" "Ca. Jinwuarcula"
"Ca. Hecatella"
"Ca. Jinwuarcula"
"Ca. Jinwuicola" "Ca. Jinwuimorpha"
"Ca. Jinwuicola"
"Ca. Jinwuimorpha"
  • Family "Hecatellaceae" Rinke et al. 2020 ["Jinwuarculaceae" Hou et al. 2023; "Jinwuicolaceae" Hou et al. 2023; "Jinwuimonadaceae" Hou et al. 2023; "Jinwuiprofundaceae" Hou et al. 2023; "Jinwuousiaceae" Hou et al. 2023] "Candidatus Hecatella" Adam et al. 2022 "Candidatus Jinwuarcula" Hou et al. 2023 [B25] "Candidatus Jinwuicola" Hou et al. 2023 [EX4484-218 sp002254975] ?"Candidatus Jinwuimonas" Hou et al. 2023 "Candidatus Jinwuimorpha" Hou et al. 2023 [EX4484-218 sp003661965] ?"Candidatus Jinwuiprofundus" Hou et al. 2023 ?"Candidatus Jinwuousia" Hou et al. 2023 [JdFR-11 sp002011035]

Order "Houtuarculales"

Phylogeny of "Houtuarculales"
"Crenohoutuithermaceae" "Ca. Crenohoutuithermus" "Fontihoutuithermaceae" "Ca. Fontihoutuithermus" "Aphrohoutuibellaceae" "Ca. Aphrohoutuibellus" "Ca. Hydrohoutuibellus" "Houtuousiaceae" "Ca. Houtuousia" "Ca. Houtuarcula"
"Crenohoutuithermaceae" "Ca. Crenohoutuithermus" "Fontihoutuithermaceae" "Ca. Fontihoutuithermus" "Aphrohoutuibellaceae" "Ca. Aphrohoutuibellus" "Ca. Hydrohoutuibellus" "Houtuousiaceae" "Ca. Houtuousia" "Ca. Houtuarcula"
"Crenohoutuithermaceae" "Ca. Crenohoutuithermus" "Fontihoutuithermaceae" "Ca. Fontihoutuithermus"
"Crenohoutuithermaceae""Ca. Crenohoutuithermus"
"Fontihoutuithermaceae""Ca. Fontihoutuithermus"
"Aphrohoutuibellaceae" "Ca. Aphrohoutuibellus" "Ca. Hydrohoutuibellus" "Houtuousiaceae" "Ca. Houtuousia" "Ca. Houtuarcula"
"Aphrohoutuibellaceae""Ca. Aphrohoutuibellus" "Ca. Hydrohoutuibellus"
"Ca. Aphrohoutuibellus"
"Ca. Hydrohoutuibellus"
"Houtuousiaceae""Ca. Houtuousia" "Ca. Houtuarcula"
"Ca. Houtuousia"
"Ca. Houtuarcula"
  • Family "Houtuithermaceae" Hou et al. 2023 ?"Candidatus Houtuithermus" Hou et al. 2023
  • Family "Marihoutuimonadaceae" Hou et al. 2023 ?"Candidatus Houtuibellus" Hou et al. 2023 ?"Candidatus Marihoutuimonas" Hou et al. 2023
  • Family "Crenohoutuithermaceae" Hou et al. 2023 "Candidatus Crenohoutuithermus" Hou et al. 2023 [DTDX01]
  • Family "Fontihoutuithermaceae" Hou et al. 2023 ["Fluxihoutuithermaceae" Hou et al. 2023; DTGE01] ?"Candidatus Fluxihoutuithermus" Hou et al. 2023 [DTOY01 sp011358085] "Candidatus Fontihoutuithermus" Hou et al. 2023 [DTGE01 sp011389385]
  • Family "Aphrohoutuibellaceae" Hou et al. 2023 [RBG-13-38-9] "Candidatus Aphrohoutuibellus" Hou et al. 2023 [RBG-13-38-9] "Candidatus Hydrohoutuibellus" Hou et al. 2023 [DTMT01 sp011355205]
  • Family "Houtuousiaceae" Hou et al. 2023 ["Houtuarculaceae" Hou et al. 2023; "Limnohoutuiplasmataceae" corrig. Hou et al. 2023; 40CM-2-53-6] "Candidatus Houtuousia" Hou et al. 2023 [40CM-2-53-6] "Candidatus Houtuarcula" Hou et al. 2023 [FEN-987] ?"Candidatus Limnohoutuiplasma" Hou et al. 2023

Order "Wuzhiqiibiales"

Phylogeny of "Wuzhiqiibiales"
"Wuzhiqiimorphaceae" "Ca. Wuzhiqiimorpha" "Wuzhiqiimonadaceae" "Ca. Wuzhiqiimonas" "Wuzhiqiibiaceae" "Ca. Wuzhiqiibium"
"Wuzhiqiimorphaceae" "Ca. Wuzhiqiimorpha" "Wuzhiqiimonadaceae" "Ca. Wuzhiqiimonas" "Wuzhiqiibiaceae" "Ca. Wuzhiqiibium"
"Wuzhiqiimorphaceae" "Ca. Wuzhiqiimorpha"
"Wuzhiqiimorphaceae""Ca. Wuzhiqiimorpha"
"Wuzhiqiimonadaceae" "Ca. Wuzhiqiimonas" "Wuzhiqiibiaceae" "Ca. Wuzhiqiibium"
"Wuzhiqiimonadaceae""Ca. Wuzhiqiimonas"
"Wuzhiqiibiaceae""Ca. Wuzhiqiibium"
  • Family "Wuzhiqiithermaceae" Hou et al. 2023 ?"Candidatus Wuzhiqiithermus" Hou et al. 2023
  • Family "Wuzhiqiitorraceae" Hou et al. 2023 ?"Candidatus Wuzhiqiitorris" Hou et al. 2023
  • Family "Wuzhiqiimorphaceae" Hou et al. 2023 [PIYN01] "Candidatus Wuzhiqiimorpha" Hou et al. 2023 [PIYN01 sp003601775]
  • Family "Wuzhiqiimonadaceae" Hou et al. 2023 [B23] "Candidatus Wuzhiqiimonas" Hou et al. 2023 [B23]
  • Family "Wuzhiqiibiaceae" Hou et al. 2023 "Candidatus Wuzhiqiibium" Hou et al. 2023 [TCS64]

Order "Zhuquarculales"

  • Family "Zhuquarculaceae" Hou et al. 2023 "Candidatus Zhuquarcula" Hou et al. 2023 [EX4484-135]
  • Family "Zhuquomorphaceae" Hou et al. 2023 [B24-G1] "Candidatus Zhuquomorpha" Hou et al. 2023

Order "Bathyarchaeales"

Phylogeny of "Bathyarchaeales"
"Pontizhurongicolaceae" "Ca. Pontizhurongicola" "Hanbarchaeaceae" "Ca. Hanbarchaeum" "Ca. Fufeiimorpha" "Ca. Zhurongicella" "Marizhurongicellaceae" "Ca. Marizhurongibium" "Ca. Marizhurongicella" "Hanbopyraceae" "Ca. Hanbopyrus" "Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum" "Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Pontizhurongicolaceae" "Ca. Pontizhurongicola" "Hanbarchaeaceae" "Ca. Hanbarchaeum" "Ca. Fufeiimorpha" "Ca. Zhurongicella" "Marizhurongicellaceae" "Ca. Marizhurongibium" "Ca. Marizhurongicella" "Hanbopyraceae" "Ca. Hanbopyrus" "Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum" "Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Pontizhurongicolaceae" "Ca. Pontizhurongicola"
"Pontizhurongicolaceae""Ca. Pontizhurongicola"
"Hanbarchaeaceae" "Ca. Hanbarchaeum" "Ca. Fufeiimorpha" "Ca. Zhurongicella" "Marizhurongicellaceae" "Ca. Marizhurongibium" "Ca. Marizhurongicella" "Hanbopyraceae" "Ca. Hanbopyrus" "Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum" "Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Hanbarchaeaceae" "Ca. Hanbarchaeum" "Ca. Fufeiimorpha" "Ca. Zhurongicella" "Marizhurongicellaceae" "Ca. Marizhurongibium" "Ca. Marizhurongicella"
"Hanbarchaeaceae""Ca. Hanbarchaeum" "Ca. Fufeiimorpha" "Ca. Zhurongicella"
"Ca. Hanbarchaeum"
"Ca. Fufeiimorpha" "Ca. Zhurongicella"
"Ca. Fufeiimorpha"
"Ca. Zhurongicella"
"Marizhurongicellaceae""Ca. Marizhurongibium" "Ca. Marizhurongicella"
"Ca. Marizhurongibium"
"Ca. Marizhurongicella"
"Hanbopyraceae" "Ca. Hanbopyrus" "Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum" "Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Hanbopyraceae" "Ca. Hanbopyrus"
"Hanbopyraceae""Ca. Hanbopyrus"
"Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum" "Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Jingweiiplasmataceae" "Ca. Jingweiiplasma" "Bathyarchaeaceae" "Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum"
"Jingweiiplasmataceae""Ca. Jingweiiplasma"
"Bathyarchaeaceae""Ca. Baizosoma" "Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum"
"Ca. Baizosoma"
"Ca. Halozhurongicella" "Ca. Baizobellus" "Ca. Bathyarchaeum"
"Ca. Halozhurongicella"
"Ca. Baizobellus" "Ca. Bathyarchaeum"
"Ca. Baizobellus"
"Ca. Bathyarchaeum"
"Baizomorphaceae" "Ca. Baizomorpha" "Bathycorpusculaceae" "Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Baizomorphaceae""Ca. Baizomorpha"
"Bathycorpusculaceae""Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella" "Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Ca. Buyanhuyuitorris" "Ca. Buyanhuyuicella"
"Ca. Buyanhuyuitorris"
"Ca. Buyanhuyuicella"
"Ca. Hanbocola" "Ca. Hanbothermus" "Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Ca. Hanbocola" "Ca. Hanbothermus"
"Ca. Hanbocola"
"Ca. Hanbothermus"
"Ca. Yanziithermus" "Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Ca. Yanziithermus"
"Ca. Yuguotorris" "Ca. Bathycorpusculum"
"Ca. Yuguotorris"
"Ca. Bathycorpusculum"
  • Family "Actozhurongousiaceae" Hou et al. 2023 ?"Candidatus Actozhurongousia" Hou et al. 2023
  • Family "Yuguousiaceae" Hou et al. 2023 ?"Candidatus Yuguousia" Hou et al. 2023
  • Family "Pontizhurongicolaceae" Hou et al. 2023 "Candidatus Pontizhurongicola" Hou et al. 2023 [B24-2 sp002490245]
  • Family "Hanbarchaeaceae" Hou et al. 2023 ["Zhurongicellaceae" Hou et al. 2023; DTEX01] "Candidatus Fufeiimorpha" Hou et al. 2023 [PIYB01] "Candidatus Hanbarchaeum" Hou et al. 2023 [DTEX01] "Candidatus Zhurongicella" Hou et al. 2023 [B63]
  • Family "Marizhurongicellaceae" Hou et al. 2023 [B26-1] ?"Candidatus Aoguangisoma" Hou et al. 2023 "Candidatus Marizhurongibium" Hou et al. 2023 [B17-G17 sp003662645] "Candidatus Marizhurongicella" Hou et al. 2023 [B26-1] ?"Candidatus Yanziimonas" Hou et al. 2023 ?"Candidatus Zhurongibium" Hou et al. 2023
  • Family "Hanbopyraceae" Hou et al. 2023 "Candidatus Hanbopyrus" Hou et al. 2023 [WUQV01 sp009889585]
  • Family "Jingweiiplasmataceae" Hou et al. 2023 [SOJC01] "Candidatus Jingweiiplasma" Hou et al. 2023 [SOJC01]
  • Family "Bathyarchaeaceae" Khomyakova et al. 2023 ["Baizosomaceae" Hou et al. 2023; "Baizostellaceae" Hou et al. 2023; "Halozhurongicellaceae" Hou et al. 2023] "Candidatus Baizobellus" Hou et al. 2023 [SOJZ01] ?"Candidatus Baizosediminiarchaeum" Yu et al. 2023 [BIN-L-1] "Candidatus Baizosoma" Hou et al. 2023 [BA1 sp001399805] ?"Candidatus Baizostella" Hou et al. 2023 "Candidatus Bathyarchaeum" Khomyakova et al. 2023 "Candidatus Halozhurongicella" Hou et al. 2023 [B1-G15]
  • Family "Baizomorphaceae" Hou et al. 2023 [UBA233] "Candidatus Baizomorpha" Hou et al. 2023
  • Family "Bathycorpusculaceae" Loh & Brune 2023 ["Aoshunithermaceae" Hou et al. 2023; "Baizomonadaceae" Hou et al. 2023; "Buyanhuyuicellaceae" Hou et al. 2023; "Hanbothermaceae" Hou et al. 2023; "Yanziithermaceae" Hou et al. 2023; "Yuguotorraceae" corrig. Hou et al. 2023] ?"Candidatus Aoshunithermus" Hou et al. 2023 ?"Candidatus Baizomonas" Hou et al. 2023 "Candidatus Bathycorpusculum" Loh & Brune 2023 ["Ca. Hafrusarcha" Pallen, Rodriguez-R & Alikhan 2022] "Candidatus Buyanhuyuicella" Hou et al. 2023 [SOJA01] "Candidatus Buyanhuyuitorris" Hou et al. 2023 [PIYA01] "Candidatus Hanbocola" Hou et al. 2023 [DSZD01] "Candidatus Hanbothermus" Hou et al. 2023 [DRVP01] "Candidatus Yanziithermus" Hou et al. 2023 [JdFR-07] "Candidatus Yuguotorris" Hou et al. 2023 [DSLH01]

Class Nitrososphaeria_A

Order "Caldarchaeales"

Phylogeny of "Caldarchaeales"
"Calditenuaceae" "Ca. Calditenuis" "Caldarchaeaceae" "Ca. Caldarchaeum" "Ca. Pelearchaeum" "Wolframiiraptoraceae" "Ca. Terraquivivens" "Ca. Geocrenenecus" "Ca. Benthortus" "Ca. Wolframiiraptor"
"Calditenuaceae" "Ca. Calditenuis" "Caldarchaeaceae" "Ca. Caldarchaeum" "Ca. Pelearchaeum" "Wolframiiraptoraceae" "Ca. Terraquivivens" "Ca. Geocrenenecus" "Ca. Benthortus" "Ca. Wolframiiraptor"
"Calditenuaceae" "Ca. Calditenuis"
"Calditenuaceae""Ca. Calditenuis"
"Caldarchaeaceae" "Ca. Caldarchaeum" "Ca. Pelearchaeum" "Wolframiiraptoraceae" "Ca. Terraquivivens" "Ca. Geocrenenecus" "Ca. Benthortus" "Ca. Wolframiiraptor"
"Caldarchaeaceae""Ca. Caldarchaeum" "Ca. Pelearchaeum"
"Ca. Caldarchaeum"
"Ca. Pelearchaeum"
"Wolframiiraptoraceae""Ca. Terraquivivens" "Ca. Geocrenenecus" "Ca. Benthortus" "Ca. Wolframiiraptor"
"Ca. Terraquivivens"
"Ca. Geocrenenecus" "Ca. Benthortus" "Ca. Wolframiiraptor"
"Ca. Geocrenenecus"
"Ca. Benthortus" "Ca. Wolframiiraptor"
"Ca. Benthortus"
"Ca. Wolframiiraptor"
  • Family "Calditenuaceae" Balbay et al. 2023 "Candidatus Calditenuis" Beam et al. 2016
  • Family "Caldarchaeaceae" Rinke et al. 2020 "Candidatus Caldarchaeum" corrig. Nunoura et al. 2011 "Candidatus Pelearchaeum" Balbay et al. 2023 ["Ca. Cadrafarcha" Pallen, Rodriguez-R & Alikhan 2022]
  • Family "Wolframiiraptoraceae" Buessecker et al. 2022 "Candidatus Benthortus" Buessecker et al. 2022 "Candidatus Geocrenenecus" Buessecker et al. 2022 "Candidatus Terraquivivens" Buessecker et al. 2022 "Candidatus Wolframiiraptor" Buessecker et al. 2022

Class Nitrososphaeria

Nitrososphaeria incertae sedis

  • ?"Candidatus Cenoporarchaeum" corrig. Zhang et al. 2019
  • ?"Candidatus Gigantothauma" corrig. Muller et al. 2010
  • ?"Candidatus Nitrosodeserticola" Hwang et al. 2021

Order "Geothermarchaeales"

  • Family "Geothermarchaeaceae" Adam et al. 2022 "Candidatus Geothermarchaeum" Adam et al. 2022 "Candidatus Scotarchaeum" Adam et al. 2022

Order PSMU01

  • Family PSMU01 "Candidatus Australarchaeum" Herbold et al. 2024

Order Conexivisphaerales

  • Family Conexivisphaeraceae Kato et al. 2021 (THSC Group) Conexivisphaera Kato et al. 2021
  • Family "Thermosulfuridaceae" Chang et al. 2026 "Acidarchaeum" Chang et al. 2026 [JAJZYL01] ?"Thermosulfuris" Chang et al. 2026

Order Nitrososphaerales

Phylogeny of Nitrososphaerales
"Gagatemarchaeaceae" "Ca. Gagatemarchaeum" "Nitrosomiraceae" "Ca. Nitrosomirus" "Nitrosocaldaceae" "Ca. Nitrosothermus" "Ca. Nitrosocaldus" Nitrososphaeraceae "Ca. Nitrosobungeria" Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus" Nitrosopumilaceae "Ca. Nitrosotalea" "Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Gagatemarchaeaceae" "Ca. Gagatemarchaeum" "Nitrosomiraceae" "Ca. Nitrosomirus" "Nitrosocaldaceae" "Ca. Nitrosothermus" "Ca. Nitrosocaldus" Nitrososphaeraceae "Ca. Nitrosobungeria" Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus" Nitrosopumilaceae "Ca. Nitrosotalea" "Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Gagatemarchaeaceae" "Ca. Gagatemarchaeum"
"Gagatemarchaeaceae""Ca. Gagatemarchaeum"
"Nitrosomiraceae" "Ca. Nitrosomirus" "Nitrosocaldaceae" "Ca. Nitrosothermus" "Ca. Nitrosocaldus" Nitrososphaeraceae "Ca. Nitrosobungeria" Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus" Nitrosopumilaceae "Ca. Nitrosotalea" "Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Nitrosomiraceae" "Ca. Nitrosomirus" "Nitrosocaldaceae" "Ca. Nitrosothermus" "Ca. Nitrosocaldus"
"Nitrosomiraceae""Ca. Nitrosomirus"
"Nitrosocaldaceae""Ca. Nitrosothermus" "Ca. Nitrosocaldus"
"Ca. Nitrosothermus"
"Ca. Nitrosocaldus"
Nitrososphaeraceae "Ca. Nitrosobungeria" Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus" Nitrosopumilaceae "Ca. Nitrosotalea" "Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
Nitrososphaeraceae"Ca. Nitrosobungeria" Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus"
"Ca. Nitrosobungeria"
Nitrososphaera_A "Ca. Nitrosopolaris" Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus"
Nitrososphaera_A "Ca. Nitrosopolaris"
Nitrososphaera_A
"Ca. Nitrosopolaris"
Nitrososphaera "Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus"
Nitrososphaera
"Ca. Nitrosomicrobium" "Ca. Nitrosocosmicus"
"Ca. Nitrosomicrobium"
"Ca. Nitrosocosmicus"
Nitrosopumilaceae"Ca. Nitrosotalea" "Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Nitrosotalea"
"Ca. Nitrosotenuis" "Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Nitrosotenuis"
"Ca. Nitrosopelagicus" "Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Nitrosopelagicus"
"Ca. Nitrosoabyssus" "Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Nitrosoabyssus"
"Ca. Cenarchaeum" Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Cenarchaeum"
Nitrosarchaeum "Ca. Nitrosomaritimum" Nitrosopumilus
Nitrosarchaeum
"Ca. Nitrosomaritimum" Nitrosopumilus
"Ca. Nitrosomaritimum"
Nitrosopumilus
  • Family "Methylarchaceae" Hua et al. 2019 ?"Candidatus Methylarchaeum" Hua et al. 2019 ?"Candidatus Methanotowutia" Ou et al. 2022
  • Family "Gagatemarchaeaceae" Sheridan et al. 2023 [UBA183] "Candidatus Gagatemarchaeum" Sheridan et al. 2023 [Bog-1369; GCA_003164815.1] ?"Candidatus Subgagatemarchaeum" Sheridan et al. 2023 [Fn1; IMG2558309099]
  • Family "Nitrosomiraceae" Zheng et al. 2024 [UBA213] "Candidatus Nitrosomirus" Zheng et al. 2024
  • Family "Nitrosocaldaceae" Qin et al. 2016 "Candidatus Nitrosocaldus" de la Torre et al. 2008 "Candidatus Nitrosothermus" Luo et al. 2021
  • Family Nitrososphaeraceae Stieglmeier et al. 2014 "Candidatus Nitrosobungeria" Tan et al. 2026 [TH5893] "Candidatus Nitrosocosmicus" corrig. Lehtovirta-Morley et al. 2016 "Candidatus Nitrosomicrobium" Tan et al. 2026 [TA-21] "Candidatus Nitrosopolaris" Pessi, Rutanen & Hultman 2022 ["Ca. Flebogarcha" Pallen, Rodriguez-R & Alikhan 2022] ?"Candidatus Nitrososappho" Singleton et al. 2025 Nitrososphaera Stieglmeier et al. 2014
  • Family Nitrosopumilaceae Qin et al. 2017 "Ca. Cenarchaeum" DeLong & Preston 1996 Nitrosarchaeum corrig. Jung et al. 2018 "Candidatus Nitrosoabyssus" Garritano et al. 2024 ?"Candidatus Nitrosokoinonia" Glasl et al. 2023 "Candidatus Nitrosomaritimum" Zhao et al. 2024 "Candidatus Nitrosopelagicus" Santoro et al. 2015 Nitrosopumilus Qin et al. 2017 ["Ca. Nitrosomarinus" Ahlgren et al. 2017] ?"Candidatus Nitrosospongia" Moeller et al. 2019 "Candidatus Nitrosotalea" Lehtovirta 2011 "Candidatus Nitrosotenuis" Lebedeva et al. 2013

Class Methanosuratincolia

Order "Methanohydrogenicales"

  • Family "Methanohydrogenicaceae" Berghuis et al. 2019 ?"Candidatus Methanohydrogenicus" Berghuis et al. 2019

Order "Methanomethylarchaeales"

  • Family "Methanomethylarchaeceae" corrig. Hua et al. 2019 ?"Candidatus Methanomethylarchaeum" corrig. Hua et al. 2019

Order "Methanomethylovorales"

  • Family "Methanomethylovoraceae" Hua et al. 2019 ?"Candidatus Methanomethylovorus" Hua et al. 2019

Order "Methanonezhaarchaeales"

  • Family "Methanohydrogenotrophicaceae" Hua et al. 2019 ?"Candidatus Methanogearchaeum" corrig. Hua et al. 2019 ?"Candidatus Methanohydrogenotrophicum" Hua et al. 2019
  • Family "Methanonezhaarchaeceae" Kohtz, Nupp & Hatzenpichler 2025 [WYZ-LMO8] "Candidatus Methanonezhaarchaeum" Kohtz, Nupp & Hatzenpichler 2025 [WYZ-LMO8]
  • Family "Muzhaarchaeaceae" [B40-G2: B40-G2]

Order "Culexarchaeales"

Phylogeny of "Culexarchaeales"
"Culexarchaeaceae" "Ca. Culexarchaeum" B10‑G16 "Ca. Culexmicrobium_B" "Culexmicrobiaceae" "Ca. Culexmicrobium"
"Culexarchaeaceae" "Ca. Culexarchaeum" B10‑G16 "Ca. Culexmicrobium_B" "Culexmicrobiaceae" "Ca. Culexmicrobium"
"Culexarchaeaceae" "Ca. Culexarchaeum"
"Culexarchaeaceae""Ca. Culexarchaeum"
B10‑G16 "Ca. Culexmicrobium_B" "Culexmicrobiaceae" "Ca. Culexmicrobium"
B10‑G16"Ca. Culexmicrobium_B"
"Culexmicrobiaceae""Ca. Culexmicrobium"
  • Family "Culexarchaeaceae" Kohtz et al. 2022 ["Methanomediaceae" Berghuis et al. 2019] "Candidatus Culexarchaeum" Kohtz et al. 2022 ["Ca. Methanomedium" Berghuis et al. 2019]
  • Family "Culexmicrobiaceae" Kohtz et al. 2022 "Candidatus Culexmicrobium" Kohtz et al. 2022
  • Family B10-G16 "Candidatus Culexmicrobium_B"

Order Methanosuratincolales

  • Family Methanosuratincolaceae Wu et al. 2025 ?"Candidatus Methanoluiimicrobium" Wu et al. 2024 "Candidatus Methanomethylicus" Vanwonterghem et al. 2016 ?"Candidatus Methanostamsia" Wu et al. 2024 Methanosuratinicola Wu et al. 2025

Class Thermoproteia

Order "Gearchaeales"

  • Family "Gearchaeaceae" corrig. ?Geoarchaeum (sic) Hunt et al. 2016

Order Thermofilales

Order Thermoproteales

Phylogeny of Thermoproteales
Thermocladiaceae Caldivirga Thermocladium Vulcanisaeta Thermoproteaceae Thermoproteus Pyrobaculum
Thermocladiaceae Caldivirga Thermocladium Vulcanisaeta Thermoproteaceae Thermoproteus Pyrobaculum
ThermocladiaceaeCaldivirga Thermocladium Vulcanisaeta
Caldivirga Thermocladium
Caldivirga
Thermocladium
Vulcanisaeta
ThermoproteaceaeThermoproteus Pyrobaculum
Thermoproteus
Pyrobaculum

Class "Sulfolobia"

Order "Tardisphaerales"

  • Family "Marsarchaeaceae" (sic) (NAG2, NCGII)
  • Family "Tardisphaerace" Prokofeva et al. 2025 ?"Tardisphaera" Prokofeva et al. 2025

Order Sulfolobales

Phylogeny of Sulfolobales
Desulfurococcaceae Staphylothermus Thermogladius Thermosphaera Desulfurococcus Fervidicoccaceae Fervidicoccus Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus Ignisphaeraceae Ignisphaera "Zestosphaeraceae" Zestosphaera Sulfolobaceae Sulfodiicoccus Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Desulfurococcaceae Staphylothermus Thermogladius Thermosphaera Desulfurococcus Fervidicoccaceae Fervidicoccus Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus Ignisphaeraceae Ignisphaera "Zestosphaeraceae" Zestosphaera Sulfolobaceae Sulfodiicoccus Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Desulfurococcaceae Staphylothermus Thermogladius Thermosphaera Desulfurococcus Fervidicoccaceae Fervidicoccus Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
Desulfurococcaceae Staphylothermus Thermogladius Thermosphaera Desulfurococcus
DesulfurococcaceaeStaphylothermus Thermogladius Thermosphaera Desulfurococcus
Staphylothermus
Thermogladius Thermosphaera Desulfurococcus
Thermogladius
Thermosphaera Desulfurococcus
Thermosphaera
Desulfurococcus
Fervidicoccaceae Fervidicoccus Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
Fervidicoccaceae Fervidicoccus
FervidicoccaceaeFervidicoccus
Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
Ignicoccaceae Ignicoccus Pyrodictiaceae Pyrolobus Hyperthermus Pyrofollis Pyrodictium
IgnicoccaceaeIgnicoccus
PyrodictiaceaePyrolobus Hyperthermus Pyrofollis Pyrodictium
Pyrolobus
Hyperthermus Pyrofollis Pyrodictium
Hyperthermus
Pyrofollis Pyrodictium
Pyrofollis
Pyrodictium
Acidilobaceae "Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
Acidilobaceae"Ca. Tiamatella" "Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
"Ca. Tiamatella"
"Ca. Calypsonella" Thermodiscus Aeropyrum Caldisphaera Acidilobus
"Ca. Calypsonella"
Thermodiscus Aeropyrum Caldisphaera Acidilobus
Thermodiscus Aeropyrum
Thermodiscus
Aeropyrum
Caldisphaera Acidilobus
Caldisphaera
Acidilobus
Ignisphaeraceae Ignisphaera "Zestosphaeraceae" Zestosphaera Sulfolobaceae Sulfodiicoccus Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Ignisphaeraceae Ignisphaera "Zestosphaeraceae" Zestosphaera
IgnisphaeraceaeIgnisphaera
"Zestosphaeraceae"Zestosphaera
Sulfolobaceae Sulfodiicoccus Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
SulfolobaceaeSulfodiicoccus Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Sulfodiicoccus
Sulfurisphaera Stygiolobus Sulfolobus Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Sulfurisphaera Stygiolobus Sulfolobus
Sulfurisphaera
Stygiolobus Sulfolobus
Stygiolobus
Sulfolobus
Sulfuracidifex Saccharolobus Metallosphaera "Ca. Aramenus" Acidianus
Sulfuracidifex Saccharolobus
Sulfuracidifex
Saccharolobus
Metallosphaera "Ca. Aramenus" Acidianus
Metallosphaera
"Ca. Aramenus" Acidianus
"Ca. Aramenus"
Acidianus
  • Family Desulfurococcaceae Zillig & Stetter 1983 Desulfurococcus Zillig & Stetter 1983 Staphylothermus Stetter & Fiala 1986 ?Sulfophobococcus Hensel et al. 1997 Thermogladius Osburn & Amend 2011 ex Kochetkova et al. 2016 Thermosphaera Huber et al. 1998 ?"Candidatus Zestomicrobium" Dzhuraeva, Bobodzhanova & Birkeland 2024
  • Family Fervidicoccaceae Perevalova et al. 2010 Fervidicoccus Perevalova et al. 2010
  • Family Pyrodictiaceae Burggraf, Huber & Stetter 1997 ?Geogemma Kashefi, Holmes & Lovley 2006 Hyperthermus Zillig, Holz & Wunderl 1991 Pyrodictium Stetter, König & Stackebrandt 1984 "Pyrofollis" Miyazaki et al. 2023 Pyrolobus Blochl et al. 1999
  • Family Acidilobaceae Prokofeva et al. 2009 Aeropyrum Sako et al. 1996 Acidilobus Prokofeva et al. 2000 Caldisphaera Itoh et al. 2003 ["Ca. Hestiella" St-John and Reysenbach 2024] "Candidatus Calypsonella" St John and Reysenbach 2024 ?Stetteria Jochimsen, Peinemann-Simon & Thomm 1998 Thermodiscus Stetter 2003 "Candidatus Tiamatella" St John and Reysenbach 2024
  • Family Ignisphaeraceae RChuvochina et al. 2024 Ignisphaera Niederberger et al. 2006
  • Family "Zestosphaeraceae" Pallen, Rodriguez-R & Alikhan 2022 Zestosphaera St. John et al. 2021
  • Family Ignicoccaceae Chuvochina et al. 2024 Ignicoccus Huber, Burggraf & Stetter 2000
  • Family Sulfolobaceae Stetter 1989 Acidianus Segerer et al. 1986 ["Sulfosphaerellus" Zhong et al. 1982; Desulfurolobus Zillig & Böck 1987] "Candidatus Aramenus" Servín-Garcidueñas & Martínez-Romero 2014 ?"Caldariella" de Rosa, Gambacorta & Bu'lock 1975 Metallosphaera Huber et al. 1989 Saccharolobus Sakai & Kurosawa 2018 Stygiolobus Segerer et al. 1991 Sulfodiicoccus Sakai & Kurosawa 2017 Sulfolobus Brock et al. 1972 Sulfuracidifex Itoh et al. 2020 Sulfurisphaera Kurosawa et al. 1998 ?Sulfurococcus Golovacheva, Vale’kho & Troitskii 1995

Phylum AGJL01

Phylogeny of Methanobacteriota
"Methanococcia" Methanococcales Methanocaldococcaceae Methanocaldococcus Methanococcaceae Methanotorris Methanofervidicoccus Methanothermococcus Methanococcus
"Methanococcia"Methanococcales Methanocaldococcaceae Methanocaldococcus Methanococcaceae Methanotorris Methanofervidicoccus Methanothermococcus Methanococcus
MethanococcalesMethanocaldococcaceae Methanocaldococcus Methanococcaceae Methanotorris Methanofervidicoccus Methanothermococcus Methanococcus
MethanocaldococcaceaeMethanocaldococcus
MethanococcaceaeMethanotorris Methanofervidicoccus Methanothermococcus Methanococcus
Methanotorris
Methanofervidicoccus Methanothermococcus Methanococcus
Methanofervidicoccus
Methanothermococcus Methanococcus
Methanothermococcus
Methanococcus

Class " Methanococcia "

Order Methanococcales

Phylum JAADCQ01

Class " Methanopyria "

Order Methanopyrales

Phylum "Hydrothermarchaeota"

Class "Hydrothermarchaeia"

Order "Hydrothermarchaeales"

  • Family "Hydrothermarchaeaceae" Chuvochina et al. 2019 "Candidatus Hydrothermarchaeum" Chuvochina et al. 2019
  • Family BMS3B "Candidatus Pyrohabitans" Adam et al. 2022

Phylum " Hadarchaeota "

Class "Persephonarchaeia"

Class "Hadarchaeia"

Order "Hadarchaeales"

  • Family "Cerberiarchaeaceae" Benito Merino et al. 2024 ?"Candidatus Cerberiarchaeum" Benito Merino et al. 2024 ?"Candidatus Melinoarchaeum" Yu et al. 2024
  • Family "Hadarchaeaceae" Chuvochina et al. 2019 ex Chuvochina et al. 2023 "Candidatus Hadarchaeum" Chuvochina et al. 2019 ?"Candidatus Hadesarchaeum" Hua et al. 2019 ?"Candidatus Methanourarchaeum" Hua et al. 2019

Phylum Methanobacteriota_B

Class "Theionarchaeia"

Class " Thermococcia "

Phylogeny of "Thermococcia"
"Thermococcia" "Methanofastidiosales" "Ca. Methanofastidiosum" "Methanofastidiosaceae" Thermococcales Palaeococcus Thermococcus_A Thermococcus_B Pyrococcus Thermococcus Thermococcaceae
"Thermococcia" "Methanofastidiosales" "Ca. Methanofastidiosum" "Methanofastidiosaceae" Thermococcales Palaeococcus Thermococcus_A Thermococcus_B Pyrococcus Thermococcus Thermococcaceae
"Thermococcia""Methanofastidiosales" "Ca. Methanofastidiosum" "Methanofastidiosaceae" Thermococcales Palaeococcus Thermococcus_A Thermococcus_B Pyrococcus Thermococcus Thermococcaceae
"Methanofastidiosales""Ca. Methanofastidiosum"
"Methanofastidiosaceae"
ThermococcalesPalaeococcus Thermococcus_A Thermococcus_B Pyrococcus Thermococcus
Palaeococcus
Thermococcus_A Thermococcus_B Pyrococcus Thermococcus
Thermococcus_A
Thermococcus_B Pyrococcus Thermococcus
Thermococcus_B Pyrococcus
Thermococcus_B
Pyrococcus
Thermococcus
Thermococcaceae

Order "Methanofastidiosales"

  • Family "Methanofastidiosaceae" Rinke et al. 2020 "Candidatus Methanofastidiosum" Nobu et al. 2016

Order Thermococcales

Phylum Methanobacteriota

Phylogeny of Methanobacteriota
"Methanobacteriia" DSM‑2088 Methanothermaceae Methanothermus Methanobacteriales DSM‑23052 Methanothermobacter_A Methanothermobacteraceae Methanothermobacter Methanobacteriaceae "Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
"Methanobacteriia"DSM‑2088 Methanothermaceae Methanothermus Methanobacteriales DSM‑23052 Methanothermobacter_A Methanothermobacteraceae Methanothermobacter Methanobacteriaceae "Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
DSM‑2088Methanothermaceae Methanothermus
MethanothermaceaeMethanothermus
MethanobacterialesDSM‑23052 Methanothermobacter_A Methanothermobacteraceae Methanothermobacter Methanobacteriaceae "Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
DSM‑23052 Methanothermobacter_A
DSM‑23052Methanothermobacter_A
Methanothermobacteraceae Methanothermobacter Methanobacteriaceae "Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
MethanothermobacteraceaeMethanothermobacter
Methanobacteriaceae"Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
"Methanacia" "Methanoflexus" "Methanovirga" "Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter
"Methanacia" "Methanoflexus" "Methanovirga"
"Methanacia"
"Methanoflexus" "Methanovirga"
"Methanoflexus"
"Methanovirga"
"Methanorudis" "Methanobaculum" "Methanobinarius" "Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter
"Methanorudis" "Methanobaculum" "Methanobinarius"
"Methanorudis"
"Methanobaculum" "Methanobinarius"
"Methanobaculum"
"Methanobinarius"
"Methanocatella" Methanobrevibacter_A "Methanarmilla" Methanobrevibacter
"Methanocatella"
Methanobrevibacter_A "Methanarmilla" Methanobrevibacter
Methanobrevibacter_A
"Methanarmilla" Methanobrevibacter
"Methanarmilla"
Methanobrevibacter
Methanobacterium_E Methanobacterium_F Methanobacterium_D Methanosphaera Methanobacterium
Methanobacterium_E Methanobacterium_F
Methanobacterium_E
Methanobacterium_F
Methanobacterium_D Methanosphaera Methanobacterium
Methanobacterium_D
Methanosphaera Methanobacterium
Methanosphaera
Methanobacterium

Class " Methanobacteriia "

Order DSM-2088

Order Methanobacteriales

  • Family Methanothermobacteraceae Chuvochina et al. 2024 Methanothermobacter Wasserfallen et al. 2000
  • Family Methanobacteriaceae Barker 1956 "Methanacia" Protasov & Brune 2023 "Methanarmilla" Protasov & Brune 2023 Methanobacterium Kluyver & van Niel 1936 "Methanobaculum" Protasov & Brune 2023 "Methanobinarius" Protasov & Brune 2023 Methanobrevibacter Balch & Wolfe 1981 "Methanocatella" Protasov & Brune 2023 "Methanoflexus" Protasov & Brune 2023 "Methanorudis" Protasov & Brune 2023 Methanosphaera Miller & Wolin 1985 "Methanovirga" Protasov & Brune 2023

Phylum Thermoplasmatota

Phylogeny of Thermoplasmatota
"Izemarchaea" "Thermoprofundales" "Poseidoniia" MGIII "Poseidoniales" "Penumbrarchaeia" "Penumbrarchaeales" "Thermoplasmatia" "Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales "Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Izemarchaea" "Thermoprofundales" "Poseidoniia" MGIII "Poseidoniales" "Penumbrarchaeia" "Penumbrarchaeales" "Thermoplasmatia" "Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales "Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Izemarchaea" "Thermoprofundales"
"Izemarchaea""Thermoprofundales"
"Poseidoniia" MGIII "Poseidoniales" "Penumbrarchaeia" "Penumbrarchaeales" "Thermoplasmatia" "Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales "Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Poseidoniia" MGIII "Poseidoniales"
"Poseidoniia"MGIII "Poseidoniales"
MGIII
"Poseidoniales"
"Penumbrarchaeia" "Penumbrarchaeales" "Thermoplasmatia" "Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales "Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Penumbrarchaeia""Penumbrarchaeales"
"Thermoplasmatia""Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales "Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Proteinoplasmatales" "Yaplasmatales" "Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales
"Proteinoplasmatales" "Yaplasmatales"
"Proteinoplasmatales"
"Yaplasmatales"
"Sysuiplasmatales" "Gimiplasmatales" Methanomassiliicoccales
"Sysuiplasmatales"
"Gimiplasmatales" Methanomassiliicoccales
"Gimiplasmatales"
Methanomassiliicoccales
"Halarchaeoplasmatales" "Lutacidiplasmatales" "Thermoplasmatales"
"Halarchaeoplasmatales"
"Lutacidiplasmatales" "Thermoplasmatales"
"Lutacidiplasmatales"
"Thermoplasmatales"

Class "Izemarchaea"

Order "Thermoprofundales"

  • (MBG-D, E2)

Class "Poseidoniia"

Order MGIII

Order "Poseidoniales"

  • Family "Poseidoniaceae" Rinke et al. 2019 "Candidatus Poseidonia" Rinke et al. 2019
  • Family "Thalassarchaeaceae" Rinke et al. 2019 "Candidatus Thalassarchaeum" corrig. Martin-Cuadrado et al. 2015

Class "Penumbrarchaeia"

Order "Penumbrarchaeales"

  • Family "Penumbrarchaeaceae" Maeke et al. 2025 "Candidatus Penumbrarchaeum" Maeke et al. 2025

Class " Thermoplasmatia "

Order "Angelarchaeales"

Order "Luniplasmatales"

  • Family "Lunaplasmataceae" (sic) Zinke et al. 2021 ?"Candidatus Lunaplasma" (sic) Zinke et al. 2021

Order "Proteinoplasmatales"

  • (SG8-5)

Order "Yaplasmatales"

  • (RBG-16-68-12) [incl. "Detorarchales" Pallen & Alikhan 2021; "Limitiplasmatales" corrig. Zheng et al. 2022]

Order "Sysuiplasmatales"

  • Family "Sysuiplasmataceae" Yuan et al. 2021 "Candidatus Sysuiplasma" Yuan et al. 2021

Order "Gimiplasmatales"

  • Family "Gimiplasmataceae" Hu et al. 2020 "Candidatus Gimiplasma" Hu et al. 2020 (UA10834)

Order Methanomassiliicoccales

Phylogeny of Methanomassiliicoccales
Methanomassiliicoccaceae Methanomassiliicoccus Methanomethylophilaceae "Ca. Methanomicula" "Methanarcanum" "Methanoprimaticola" Methanomethylophilus "Methanogranum" "Methanoplasma"
Methanomassiliicoccaceae Methanomassiliicoccus Methanomethylophilaceae "Ca. Methanomicula" "Methanarcanum" "Methanoprimaticola" Methanomethylophilus "Methanogranum" "Methanoplasma"
MethanomassiliicoccaceaeMethanomassiliicoccus
Methanomethylophilaceae"Ca. Methanomicula" "Methanarcanum" "Methanoprimaticola" Methanomethylophilus "Methanogranum" "Methanoplasma"
"Ca. Methanomicula"
"Methanarcanum" "Methanoprimaticola" Methanomethylophilus "Methanogranum" "Methanoplasma"
"Methanarcanum"
"Methanoprimaticola" Methanomethylophilus "Methanogranum" "Methanoplasma"
"Methanoprimaticola"
Methanomethylophilus "Methanogranum" "Methanoplasma"
Methanomethylophilus
"Methanogranum" "Methanoplasma"
"Methanogranum"
"Methanoplasma"
  • Family "Methanomixtatrophicaceae" Hua et al. 2019 ?"Candidatus Methanomixtatrophicum" Hua et al. 2019
  • Family Methanomassiliicoccaceae Iino et al. 2013 Methanomassiliicoccus Dridi et al. 2012
  • Family Methanomethylophilaceae Gaci et al. 2014 ex Borrel et al. 2024 "Methanarcanum" Chibani et al. 2023 "Methanogranum" Iino et al. 2023 Methanomethylophilus Borrel et al. 2024 "Candidatus Methanomicula" Protasov & Brune 2023 ["Ca. Cribefarcha" Pallen, Rodriguez-R & Alikhan 2022] "Methanoplasma" Lang & Brune 2023 "Methanoprimaticola" Chibani et al. 2023 ?"Candidatus Methanospyradousia" Gilroy et al. 2021

Order "Halarchaeoplasmatales"

Phylogeny of "Halarchaeoplasmatales"
"Halarchaeoplasmataceae" "Ca. Natronoplasma" "Ca. Saliniplasma" "Ca. Haladaptiplasma" "Ca. Halarchaeoplasma"
"Halarchaeoplasmataceae""Ca. Natronoplasma" "Ca. Saliniplasma" "Ca. Haladaptiplasma" "Ca. Halarchaeoplasma"
"Ca. Natronoplasma"
"Ca. Saliniplasma" "Ca. Haladaptiplasma" "Ca. Halarchaeoplasma"
"Ca. Saliniplasma"
"Ca. Haladaptiplasma" "Ca. Halarchaeoplasma"
"Ca. Haladaptiplasma"
"Ca. Halarchaeoplasma"
  • Family "Halarchaeoplasmataceae" Zhou et al. 2023 (PWKY01) "Candidatus Haladaptiplasma" corrig. Zhou et al. 2022 "Candidatus Halarchaeoplasma" Zhou et al. 2023 ["Ca. Haloplasma" Zhou et al. 2022 non Antunes et al. 2008] "Candidatus Natronoplasma" Zhou et al. 2022 "Candidatus Saliniplasma" Zhou et al. 2022

Order "Lutacidiplasmatales"

  • Family "Lutacidiplasmataceae" Sheridan et al. 2022 "Candidatus Lutacidiplasma" Sheridan et al. 2022 (UBA184)

Order Thermoplasmatales

Phylogeny of Thermoplasmatales
"Aciduliprofundaceae" "Aciduliprofundum" Thermoplasmataceae Thermoplasma Cuniculiplasma Thermogymnomonas Picrophilus Acidiplasma Ferroplasma
"Aciduliprofundaceae" "Aciduliprofundum" Thermoplasmataceae Thermoplasma Cuniculiplasma Thermogymnomonas Picrophilus Acidiplasma Ferroplasma
"Aciduliprofundaceae""Aciduliprofundum"
ThermoplasmataceaeThermoplasma Cuniculiplasma Thermogymnomonas Picrophilus Acidiplasma Ferroplasma
Thermoplasma
Cuniculiplasma Thermogymnomonas Picrophilus Acidiplasma Ferroplasma
Cuniculiplasma Thermogymnomonas
Cuniculiplasma
Thermogymnomonas
Picrophilus Acidiplasma Ferroplasma
Picrophilus
Acidiplasma Ferroplasma
Acidiplasma
Ferroplasma
  • Family "Aciduliprofundaceae" Rinke et al. 2020 "Aciduliprofundum" Reysenbach et al. 2006 (DHVE2 group)
  • Family Thermoplasmataceae Reysenbach 2002 Acidiplasma Golyshina et al. 2009 ?"Candidatus Carboxiplasma" Bulaev et al. 2023 Cuniculiplasma corrig. Golyshina et al. 2016 Ferroplasma Golyshina et al. 2000 ?Oxyplasma Golyshina et al. 2024 Picrophilus Schleper et al. 1996 ?"Candidatus Scheffleriplasma" Krause et al. 2022 Thermogymnomonas Itoh, Yoshikawa & Takashina 2007 Thermoplasma Darland et al. 1970

Phylum Halobacteriota

Phylogeny of Halobacteriota
Methanonatronarchaeia Methanonatronarchaeales "Methanoliparia" "Methanoliparales" "Archaeoglobia" "Mnemosynellales" Archaeoglobales Bog‑38 "Methanoflorentales" Methanocellia Methanocellales "Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales "Methanomicrobia" Methanomicrobiales Halobacteria Halobacteriales
Methanonatronarchaeia Methanonatronarchaeales "Methanoliparia" "Methanoliparales" "Archaeoglobia" "Mnemosynellales" Archaeoglobales Bog‑38 "Methanoflorentales" Methanocellia Methanocellales "Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales "Methanomicrobia" Methanomicrobiales Halobacteria Halobacteriales
Methanonatronarchaeia Methanonatronarchaeales
MethanonatronarchaeiaMethanonatronarchaeales
"Methanoliparia" "Methanoliparales" "Archaeoglobia" "Mnemosynellales" Archaeoglobales Bog‑38 "Methanoflorentales" Methanocellia Methanocellales "Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales "Methanomicrobia" Methanomicrobiales Halobacteria Halobacteriales
"Methanoliparia" "Methanoliparales" "Archaeoglobia" "Mnemosynellales" Archaeoglobales Bog‑38 "Methanoflorentales" Methanocellia Methanocellales "Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales
"Methanoliparia" "Methanoliparales" "Archaeoglobia" "Mnemosynellales" Archaeoglobales
"Methanoliparia""Methanoliparales"
"Archaeoglobia""Mnemosynellales" Archaeoglobales
"Mnemosynellales"
Archaeoglobales
Bog‑38 "Methanoflorentales" Methanocellia Methanocellales "Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales
Bog‑38 "Methanoflorentales" Methanocellia Methanocellales
Bog‑38"Methanoflorentales"
MethanocelliaMethanocellales
"Syntropharchaeia" "Aerarchaeales" "Syntropharchaeales" "Alkanophagales" Methanosarcinia Methanosarcinales_A Methanotrichales Methanosarcinales
"Syntropharchaeia""Aerarchaeales" "Syntropharchaeales" "Alkanophagales"
"Aerarchaeales"
"Syntropharchaeales" "Alkanophagales"
"Syntropharchaeales"
"Alkanophagales"
MethanosarciniaMethanosarcinales_A Methanotrichales Methanosarcinales
Methanosarcinales_A Methanotrichales
Methanosarcinales_A
Methanotrichales
Methanosarcinales
"Methanomicrobia" Methanomicrobiales Halobacteria Halobacteriales
"Methanomicrobia"Methanomicrobiales
HalobacteriaHalobacteriales

Halobacteriota incertae sedis

  • ?"Candidatus Methanoinsularis" Ou et al. 2022
  • ?"Candidatus Methanoporticola" Ou et al. 2022

Class Methanonatronarchaeia

Order Methanonatronarchaeales

  • Family Methanonatronarchaeaceae Sorokin et al. 2018 "Candidatus Methanohalarchaeum" Sorokin et al. 2018 Methanonatronarchaeum Sorokin et al. 2018

Class "Methanoliparia"

Order "Methanoliparales"

  • Family "Methanoliparaceae" Borrel et al. 2019 "Candidatus Methanoliparum" Borrel et al. 2019 "Candidatus Methanolliviera" Borrel et al. 2019

Class " Archaeoglobia "

Phylogeny of "Archaeoglobia"
"Mnemosynellales" "Mnemosynellaceae" "Ca. Mnemosynella" Archaeoglobales Archaeoglobaceae Archaeoglobus_A Archaeoglobus_C Archaeoglobus_B Ferroglobus Geoglobus Archaeoglobus
"Mnemosynellales" "Mnemosynellaceae" "Ca. Mnemosynella" Archaeoglobales Archaeoglobaceae Archaeoglobus_A Archaeoglobus_C Archaeoglobus_B Ferroglobus Geoglobus Archaeoglobus
"Mnemosynellales""Mnemosynellaceae" "Ca. Mnemosynella"
"Mnemosynellaceae""Ca. Mnemosynella"
ArchaeoglobalesArchaeoglobaceae Archaeoglobus_A Archaeoglobus_C Archaeoglobus_B Ferroglobus Geoglobus Archaeoglobus
ArchaeoglobaceaeArchaeoglobus_A Archaeoglobus_C Archaeoglobus_B Ferroglobus Geoglobus Archaeoglobus
Archaeoglobus_A Archaeoglobus_C
Archaeoglobus_A
Archaeoglobus_C
Archaeoglobus_B Ferroglobus Geoglobus Archaeoglobus
Archaeoglobus_B
Ferroglobus Geoglobus Archaeoglobus
Ferroglobus Geoglobus
Ferroglobus
Geoglobus
Archaeoglobus

Order "Mnemosynellales"

  • Family "Mnemosynellaceae" Adam et al. 2022 "Candidatus Mnemosynella" Adam et al. 2022

Order Archaeoglobales

  • Family "Allopolytropaceae" corrig. Boyd et al. 2019 ?"Candidatus Allopolytropus" corrig. Boyd et al. 2019 ["Ca. Polytropus" Boyd et al. 2019 non Kirsch 1866]
  • Family Archaeoglobaceae Huber & Stetter 2002 Archaeoglobus Stetter 1988 Ferroglobus Hafenbradl et al. 1997 Geoglobus Kashefi et al. 2002 ?"Candidatus Methanoglobus" Buessecker et al. 2023 ?"Candidatus Methanomixotrophus" corrig. Liu et al. 2021 ?"Candidatus Methanoproducendum" Hua et al. 2019

Class Bog-38

Order "Methanoflorentales"

  • Family "Methanoflorentaceae" Mondav et al. 2014 "Candidatus Methanoflorens" Mondav et al. 2014

Class Methanocellia

Order Methanocellales

Phylogeny of Methanocellales
Methanocellaceae Methanooceanicella Methanocella_A Methanocella
MethanocellaceaeMethanooceanicella Methanocella_A Methanocella
Methanooceanicella Methanocella_A
Methanooceanicella
Methanocella_A
Methanocella
  • Family Methanocellaceae Sakai et al. 2008 Methanocella Sakai et al. 2008 Methanooceanicella Zhang et al. 2024

Class "Syntropharchaeia"

Order "Aerarchaeales"

  • Family YL-1 "Candidatus Methanodefluvium" Leu et al. 2025
  • Family "Aerarchaeaceae" Leu et al. 2025 [CG-2] "Candidatus Aerarchaeum" Leu et al. 2025 (GG-2) "Candidatus Aerovita" Leu et al. 2025 (CM-1, CG-1, MW-1)

Order "Syntropharchaeales"

  • Family "Syntropharchaeaceae" (ANME-2 cluster) "Candidatus Syntropharchaeum" corrig. Laso-Perez et al. 2016

Order "Alkanophagales"

Phylogeny of "Alkanophagales"
"Alkanophagaceae" "Ca. Alkanophaga" "Methanospirantaceae" "Ca. Methanophaga" "Ca. Methanospirare" "Ca. Methanoxibalbensis"
"Alkanophagaceae" "Ca. Alkanophaga" "Methanospirantaceae" "Ca. Methanophaga" "Ca. Methanospirare" "Ca. Methanoxibalbensis"
"Alkanophagaceae""Ca. Alkanophaga"
"Methanospirantaceae""Ca. Methanophaga" "Ca. Methanospirare" "Ca. Methanoxibalbensis"
"Ca. Methanophaga"
"Ca. Methanospirare" "Ca. Methanoxibalbensis"
"Ca. Methanospirare"
"Ca. Methanoxibalbensis"
  • Family?"Veteromethanophagaceae" Vulcano et al. 2022
  • Family "Alkanophagaceae" [B39-G2] "Candidatus Alkanophaga" Zehnle et al. 2023
  • Family "Methanospirantaceae" corrig. Laso-Pérez et al. 2022 ?"Candidatus Methanoalium" Chadwick et al. 2022 "Candidatus Methanophaga" Chadwick et al. 2022 "Candidatus Methanospirans" corrig. Laso-Pérez et al. 2022 "Candidatus Methanoxibalbella" corrig. Laso-Pérez et al. 2022

Order Methanosarcinales_A

Family Methermicoccaceae Cheng et al. 2007

  • Methermicoccus Cheng et al. 2007

Class Methanosarcinia

Order Methanotrichales

  • Family Methanotrichaceae Akinyemi et al. 2021 "Candidatus Methanocrinis" Khomyakova et al. 2023 Methanothrix Huser, Wuhrmann & Zehnder 1983 [Methanosaeta Patel & Sprott 1990]

Order Methanosarcinales

Phylogeny of Methanosarcinales
"Methanocomedentaceae" "Ca. Methanocomedens" "Ca. Methanomarinus" "Ethanoperedentaceae" "Ca. Argarchaeum" "Methanoperedentaceae" "Ca. Methanoperedens" "Methanogastraceae" "Ca. Methanogaster" Methanosarcinaceae "Methanofrustulum" Methanolapillus Methanimicrococcus Methanosarcina Methanohalobium Methanosalsum Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
"Methanocomedentaceae" "Ca. Methanocomedens" "Ca. Methanomarinus" "Ethanoperedentaceae" "Ca. Argarchaeum" "Methanoperedentaceae" "Ca. Methanoperedens" "Methanogastraceae" "Ca. Methanogaster" Methanosarcinaceae "Methanofrustulum" Methanolapillus Methanimicrococcus Methanosarcina Methanohalobium Methanosalsum Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
"Methanocomedentaceae" "Ca. Methanocomedens" "Ca. Methanomarinus" "Ethanoperedentaceae" "Ca. Argarchaeum" "Methanoperedentaceae" "Ca. Methanoperedens"
"Methanocomedentaceae" "Ca. Methanocomedens" "Ca. Methanomarinus"
"Methanocomedentaceae""Ca. Methanocomedens" "Ca. Methanomarinus"
"Ca. Methanocomedens"
"Ca. Methanomarinus"
"Ethanoperedentaceae" "Ca. Argarchaeum" "Methanoperedentaceae" "Ca. Methanoperedens"
"Ethanoperedentaceae""Ca. Argarchaeum"
"Methanoperedentaceae""Ca. Methanoperedens"
"Methanogastraceae" "Ca. Methanogaster" Methanosarcinaceae "Methanofrustulum" Methanolapillus Methanimicrococcus Methanosarcina Methanohalobium Methanosalsum Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
"Methanogastraceae""Ca. Methanogaster"
Methanosarcinaceae"Methanofrustulum" Methanolapillus Methanimicrococcus Methanosarcina Methanohalobium Methanosalsum Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
"Methanofrustulum" Methanolapillus Methanimicrococcus Methanosarcina
"Methanofrustulum" Methanolapillus Methanimicrococcus
"Methanofrustulum"
Methanolapillus Methanimicrococcus
Methanolapillus
Methanimicrococcus
Methanosarcina
Methanohalobium Methanosalsum Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
Methanohalobium Methanosalsum
Methanohalobium
Methanosalsum
Methanococcoides Methanohalophilus Methanomethylovorans Methanolobus
Methanococcoides Methanohalophilus
Methanococcoides
Methanohalophilus
Methanomethylovorans Methanolobus
Methanomethylovorans
Methanolobus
  • Family "Methanocomedentaceae" corrig. Chadwick et al. 2022 "Candidatus Methanocomedens" Chadwick et al. 2022 (ANME-2a) "Candidatus Methanomarinus" Chadwick et al. 2022 (ANME-2b)
  • Family "Ethanoperedentaceae" (sic) Pallen, Rodriguez-R & Alikhan 2022 (EX4572-44) "Ca. Argarchaeum" corrig. Chen et al. 2019 ["Candidatus Ethaniperedens" corrig. Hahn et al. 2020]
  • Family "Methanoperedentaceae" corrig. Haroon et al. 2013 "Candidatus Methanoperedens" Haroon et al. 2013 (ANME-2d, AAA)
  • Family "Methanogastraceae" corrig. Chadwick et al. 2022 (ANME-2c) "Candidatus Methanogaster" Chadwick et al. 2022
  • Family Methanosarcinaceae Balch & Wolfe 1981 ?Halomethanococcus Yu & Kawamura 1988 Methanimicrococcus corrig. Sprenger et al. 2000 Methanococcoides Sowers & Ferry 1985 "Methanofrustulum" Protasov & Brune 2023 Methanohalobium Zhilina & Zavarzin 1988 Methanohalophilus Paterek & Smith 1988 Methanolapillus Protasov & Brune 2025 Methanolobus König & Stetter 1983 Methanomethylovorans Lomans et al. 2004 Methanosalsum Boone & Baker 2002 Methanosarcina Kluyver & van Niel 1936 ?"Candidatus Methanovorans" Chadwick et al. 2022 (ANME-3)

Class " Methanomicrobia "

Order Methanomicrobiales

Phylogeny of Methanomicrobiales
Methanofollaceae Methanofollis Methanocorpusculaceae Methanocorpusculum Methanocalculus Methanospirillaceae Methanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum Methanoculleaceae Methanoculleus Methanomicrobiaceae Methanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanofollaceae Methanofollis Methanocorpusculaceae Methanocorpusculum Methanocalculus Methanospirillaceae Methanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum Methanoculleaceae Methanoculleus Methanomicrobiaceae Methanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanofollaceae Methanofollis
MethanofollaceaeMethanofollis
Methanocorpusculaceae Methanocorpusculum Methanocalculus Methanospirillaceae Methanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum Methanoculleaceae Methanoculleus Methanomicrobiaceae Methanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanocorpusculaceae Methanocorpusculum Methanocalculus
MethanocorpusculaceaeMethanocorpusculum Methanocalculus
Methanocorpusculum
Methanocalculus
Methanospirillaceae Methanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum Methanoculleaceae Methanoculleus Methanomicrobiaceae Methanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanospirillaceae Methanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum
MethanospirillaceaeMethanosphaerula Methanoregula Methanolinea "Methanofilum" Methanospirillum
Methanosphaerula
Methanoregula Methanolinea "Methanofilum" Methanospirillum
Methanoregula
Methanolinea "Methanofilum" Methanospirillum
Methanolinea
"Methanofilum" Methanospirillum
"Methanofilum"
Methanospirillum
Methanoculleaceae Methanoculleus Methanomicrobiaceae Methanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
MethanoculleaceaeMethanoculleus
MethanomicrobiaceaeMethanovulcanius Methanogenium Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanovulcanius Methanogenium
Methanovulcanius
Methanogenium
Methanoplanus Methanolacinia Methanochimaera Methanomicrobium
Methanoplanus
Methanolacinia Methanochimaera Methanomicrobium
Methanolacinia
Methanochimaera Methanomicrobium
Methanochimaera
Methanomicrobium

Class "Ordosarchaeia"

Order "Ordosarchaeales"

  • Family "Ordosarchaeaceae" Zhao et al. 2024 ?"Candidatus Ordosarchaeum" Zhao et al. 2024

Class Halobacteria

Order Halobacteriales

Phylogeny of Halobacteriales
"Afararchaeaceae" "Ca. Afararchaeum" Halorutilaceae Halorutilus "Hikarchaeaceae" "Ca. Chewarchaeum" "Ca. Hikarchaeum" "Salinarchaeaceae" Salinarchaeum Halalkalicoccaceae Natronorarus Halalkalicoccus Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
"Afararchaeaceae" "Ca. Afararchaeum" Halorutilaceae Halorutilus "Hikarchaeaceae" "Ca. Chewarchaeum" "Ca. Hikarchaeum" "Salinarchaeaceae" Salinarchaeum Halalkalicoccaceae Natronorarus Halalkalicoccus Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
"Afararchaeaceae" "Ca. Afararchaeum" Halorutilaceae Halorutilus
"Afararchaeaceae""Ca. Afararchaeum"
HalorutilaceaeHalorutilus
"Hikarchaeaceae" "Ca. Chewarchaeum" "Ca. Hikarchaeum" "Salinarchaeaceae" Salinarchaeum Halalkalicoccaceae Natronorarus Halalkalicoccus Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
"Hikarchaeaceae" "Ca. Chewarchaeum" "Ca. Hikarchaeum"
"Hikarchaeaceae""Ca. Chewarchaeum" "Ca. Hikarchaeum"
"Ca. Chewarchaeum"
"Ca. Hikarchaeum"
"Salinarchaeaceae" Salinarchaeum Halalkalicoccaceae Natronorarus Halalkalicoccus Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
"Salinarchaeaceae" Salinarchaeum
"Salinarchaeaceae"Salinarchaeum
Halalkalicoccaceae Natronorarus Halalkalicoccus Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
Halalkalicoccaceae Natronorarus Halalkalicoccus
HalalkalicoccaceaeNatronorarus Halalkalicoccus
Natronorarus
Halalkalicoccus
Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
Haladaptataceae Halomicrococcus Haladaptatus Halorussus Halobacteriaceae Halanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium
HaladaptataceaeHalomicrococcus Haladaptatus Halorussus
Halomicrococcus Haladaptatus
Halomicrococcus
Haladaptatus
Halorussus
HalobacteriaceaeHalanaeroarchaeum Halodesulfurarchaeum Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium
Halanaeroarchaeum Halodesulfurarchaeum
Halanaeroarchaeum
Halodesulfurarchaeum
Halospeciosus Salarchaeum Halocalculus Halarchaeum Halobacterium
Halospeciosus Salarchaeum Halocalculus Halarchaeum
Halospeciosus Salarchaeum
Halospeciosus
Salarchaeum
Halocalculus Halarchaeum
Halocalculus
Halarchaeum
Halobacterium
Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum Natrialbaceae cont'd
Natronoarchaeaceae Halostella Natranaeroarchaeum Natronoarchaeum
NatronoarchaeaceaeHalostella Natranaeroarchaeum Natronoarchaeum
Halostella
Natranaeroarchaeum Natronoarchaeum
Natranaeroarchaeum
Natronoarchaeum
Natrialbaceae cont'd
Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula Haloferacaceae cont'd
Halococcaceae Halococcus Haloarculaceae Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula
HalococcaceaeHalococcus
HaloarculaceaeHalocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula
Halocatena Halomarina Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus
Halocatena Halomarina
Halocatena
Halomarina
Natronomonas Halorarius Halosegnis Salinirubellus Haloglomus
Natronomonas
Halorarius Halosegnis Salinirubellus Haloglomus
Halorarius Halosegnis
Halorarius
Halosegnis
Salinirubellus Haloglomus
Salinirubellus
Haloglomus
Halorientalis Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula
Halorientalis
Halococcoides Halapricum Halorhabdus Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula
Halococcoides Halapricum Halorhabdus
Halococcoides
Halapricum Halorhabdus
Halapricum
Halorhabdus
Salinirussus Salinibaculum Halovenus Halosimplex Halomicrobium Haloarcula
Salinirussus Salinibaculum Halovenus Halosimplex
Salinirussus Salinibaculum Halovenus
Salinirussus
Salinibaculum Halovenus
Salinibaculum
Halovenus
Halosimplex
Halomicrobium Haloarcula
Halomicrobium
Haloarcula
Haloferacaceae cont'd
  • ?"Haloalcalophilium" Lizama et al. 2000a
  • Family "Abyssiniarchaeaceae" Gutiérrez-Preciado et al. 2024 ?"Candidatus Abyssiniarchaeum" Gutiérrez-Preciado et al. 2024 (DAL-8mg-83m_91C4R)
  • Family "Karumarchaeaceae" Gutiérrez-Preciado et al. 2024 ?"Candidatus Karumarchaeum" Gutiérrez-Preciado et al. 2024 (DAL-8mg-83m_91C4R)
  • Family "Afararchaeaceae" Baker et al. 2024 "Candidatus Afararchaeum" Baker et al. 2024
  • Family Halorutilaceae Durán-Viseras et al. 2023 Halorutilus Durán-Viseras et al. 2023
  • Family "Hikarchaeaceae" Martijn et al. 2020 (MG-IV) "Candidatus Chewarchaeum" Baker et al. 2024 "Candidatus Hikarchaeum" Martijn et al. 2020
  • Family "Salinarchaeaceae" Salinarchaeum Cui et al. 2014
  • Family Halalkalicoccaceae Mao et al. 2025 Halalkalicoccus Xue et al. 2005 Natronorarus Mao et al. 2025
  • Family Haladaptataceae Rinke et al. 2020 Haladaptatus Savage et al. 2007 Halomicrococcus Chen et al. 2020 Halorussus Cui et al. 2014
  • Family Halobacteriaceae Halanaeroarchaeum Sorokin et al. 2016 Halarchaeum Minegishi et al. 2010 Halobacterium (Elazari-Volcani 1940) Elazari-Volcani 1957 ["Halobacter" Anderson 1954] Halocalculus Minegishi et al. 2015 Halodesulfurarchaeum Sorokin et al. 2017 Halospeciosus Li et al. 2024 Salarchaeum Shimane et al. 2011
  • Family Natronoarchaeaceae Sorokin et al. 2023 Halostella Song et al. 2016 Natranaeroarchaeum Sorokin et al. 2023 Natronoarchaeum Shimane et al. 2010
Phylogeny of Natrialbaceae
Halorubellus Haloarchaeobius Halovivax Natronobeatus Natribaculum Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halorubellus Haloarchaeobius Halovivax Natronobeatus Natribaculum Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halorubellus Haloarchaeobius
Halorubellus
Haloarchaeobius
Halovivax Natronobeatus Natribaculum Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halovivax
Natronobeatus Natribaculum Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natronobeatus
Natribaculum Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natribaculum
Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natronobiforma Saliphagus Halomontanus Natrononativus Natronosalvus
Natronobiforma Saliphagus Halomontanus
Natronobiforma Saliphagus
Natronobiforma
Saliphagus
Halomontanus
Natrononativus Natronosalvus
Natrononativus
Natronosalvus
Salinilacihabitans Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Salinilacihabitans
Halovalidus Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halovalidus
Halostagnicola Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halostagnicola
Natronococcus Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natronococcus
Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Halopiger_A Natrarchaeobaculum Halopiger_B Halosolutus
Halopiger_A Natrarchaeobaculum
Halopiger_A
Natrarchaeobaculum
Halopiger_B Halosolutus
Halopiger_B
Halosolutus
Natrarchaeobius Salinadaptatus Natrialba Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natrarchaeobius Salinadaptatus Natrialba
Natrarchaeobius
Salinadaptatus Natrialba
Salinadaptatus
Natrialba
Natronolimnobius Halopiger Natronobacterium Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natronolimnobius Halopiger Natronobacterium
Natronolimnobius Halopiger
Natronolimnobius
Halopiger
Natronobacterium
Natronolimnohabitans Haloterrigena Natronorubrum Natrinema
Natronolimnohabitans Haloterrigena Natronorubrum
Natronolimnohabitans Haloterrigena
Natronolimnohabitans
Haloterrigena
Natronorubrum
Natrinema
  • Family Natrialbaceae Gupta et al. 2015 Haloarchaeobius Makhdoumi-Kakhki et al. 2012 Halomontanus Mao et al. 2024 [Natronoglomus Sorokin et al. 2025] Halopiger Gutierrez et al. 2007 Halorubellus Cui et al. 2014 Halosolutus Sun et al. 2022 Halostagnicola Castillo et al. 2006 Haloterrigena Ventosa et al. 1999 Halovalidus Dong et al. 2025 Halovivax Castillo et al. 2006 Natrarchaeobaculum Sorokin et al. 2020 Natrarchaeobius corrig. Sorokin et al. 2020 Natrialba Kamekura & Dyall-Smith 1996 Natribaculum Liu et al. 2015 [Halovarius Mehrshad et al. 2015] Natronobacterium Tindall et al. 1984 [Halobiforma Hezayen et al. 2002] Natronobiforma Sorokin et al. 2019 Natronococcus Tindall et al. 1984 Natronolimnobius Itoh et al. 2005 Natronolimnohabitans Sorokin et al. 2020 Natrinema McGenity et al. 1998 Natronobeatus Li et al. 2023 Natrononativus Li et al. 2023 Natronorubrum Xu et al. 1999 Natronosalvus Tan et al. 2023 Salinadaptatus Xue et al. 2020 Salinilacihabitans Li et al. 2023 Saliphagus Yin et al. 2017
  • Family Halococcaceae Gupta et al. 2016 Halococcus Schoop 1935
  • Family Haloarculaceae Halapricum Song et al. 2014 ["Halarchaeoglobus" Sorokin et al. 2021] Haloarcula Torreblanca et al. 1986 [Halomicroarcula Echigo et al. 2013] Halocatena Verma et al. 2020 [Actinarchaeum corrig. Tang et al. 2024] Halococcoides Sorokin et al. 2019 Haloglomus Duran-Viseras, Sanchez-Porro & Ventosa 2020 Halomarina Inoue et al. 2011 Halomicroarcula Echigo et al. 2013 Halomicrobium Oren et al. 2002 [Halosiccatus Mehrshad et al. 2016] Halorientalis Cui et al. 2011 Halorarius Sun et al. 2023 Halorhabdus Waino et al. 2000 Halosegnis Duran-Viseras et al. 2022 [Sala Song et al. 2023 non Ross 1937 non Walker 1867; Salella Deshmukh & Oren 2023] Halosimplex Vreeland et al. 2003 Halovenus Makhdoumi-Kakhki et al. 2012 Natronomonas Kamekura et al. 1997 Salinibaculum Han & Cui 2020 Salinirubellus Hou et al. 2018 Salinirussus Cui et al. 2017
Phylogeny of Haloferacaceae
Salinirubrum Haloplanus Salinirarus Haloprofundus Halegenticoccus Halobium Halogranum Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum Halolamina "Ca. Halobonum" Halorarum Halobaculum Halalkalirubrum Natronocalculus Halohasta Halonotius Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Salinirubrum Haloplanus Salinirarus Haloprofundus Halegenticoccus Halobium Halogranum Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum Halolamina "Ca. Halobonum" Halorarum Halobaculum Halalkalirubrum Natronocalculus Halohasta Halonotius Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Salinirubrum
Haloplanus Salinirarus Haloprofundus Halegenticoccus Halobium Halogranum Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum Halolamina "Ca. Halobonum" Halorarum Halobaculum Halalkalirubrum Natronocalculus Halohasta Halonotius Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Haloplanus Salinirarus Haloprofundus Halegenticoccus Halobium Halogranum Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum
Haloplanus Salinirarus
Haloplanus
Salinirarus
Haloprofundus Halegenticoccus Halobium Halogranum Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum
Haloprofundus Halegenticoccus Halobium Halogranum
Haloprofundus
Halegenticoccus Halobium Halogranum
Halegenticoccus
Halobium Halogranum
Halobium
Halogranum
Salinigranum Haloferax Halopelagius Halogeometricum Haloquadratum
Salinigranum
Haloferax Halopelagius Halogeometricum Haloquadratum
Haloferax
Halopelagius Halogeometricum Haloquadratum
Halopelagius
Halogeometricum Haloquadratum
Halogeometricum
Haloquadratum
Halolamina "Ca. Halobonum" Halorarum Halobaculum Halalkalirubrum Natronocalculus Halohasta Halonotius Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Halolamina "Ca. Halobonum" Halorarum Halobaculum
Halolamina
"Ca. Halobonum" Halorarum Halobaculum
"Ca. Halobonum"
Halorarum Halobaculum
Halorarum
Halobaculum
Halalkalirubrum Natronocalculus Halohasta Halonotius Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Halalkalirubrum Natronocalculus Halohasta Halonotius
Halalkalirubrum Natronocalculus
Halalkalirubrum
Natronocalculus
Halohasta Halonotius
Halohasta
Halonotius
Halalkaliarchaeum Halopenitus Haloparvum Halorubrum
Halalkaliarchaeum
Halopenitus Haloparvum Halorubrum
Halopenitus
Haloparvum Halorubrum
Haloparvum
Halorubrum
  • Family Haloferacaceae Gupta et al. 2015 Halalkaliarchaeum Sorokin et al. 2019 Halalkalirubrum Zuo et al. 2021 ?"Candidatus Halectosymbiota" corrig. Filker et al. 2014 Halegenticoccus Liu et al. 2022 Halobaculum Oren et al. 1995 Halobium Mori et al. 2016 "Candidatus Halobonum" Ugalde et al. 2013 Haloferax Torreblanca et al. 1986 Halogeometricum Montalvo-Rodriguez et al. 1998 [Halosarcina Savage et al. 2008] Halogranum Cui et al. 2010 Halohasta Mou et al. 2013 Halolamina Cui et al. 2011 Halonotius Burns et al. 2010 ?"Halonovum" Hwang et al. 2025 Haloparvum Chen et al. 2016 Halopelagius Cui et al. 2010 Halopenitus Amoozegar et al. 2012 Haloplanus Elevi Bardavid et al. 2007 Haloprofundus Zhang et al. 2017 Haloquadratum Burns et al. 2007 [Halobellus Cui et al. 2011] Halorubrum McGenity & Grant 1996 [Halorubrobacterium Kamekura & Dyall-Smith 1996] ?Halosubterraneus Ding et al. 2026 ?Halotolerantifilum Fisher et al. 2026 Natronocalculus Sorokin et al. 2023 Salinigranum Cui & Zhang 2014 Salinirarus Zhang et al. 2025 Salinirubrum corrig. Cui & Qiu 2014

See also