Name: "Halobacteriota" Rinke et al. 2021

Category: Phylum

Proposed as: phyl. nov.

Etymology: Ha.lo.bac.te.ri.o’ta. N.L. neut. n. Halobacterium, a generic name providing the stem of the name of the type class; L. neut. pl. n. suff. -ota, ending to denote a phylum; N.L. neut. pl. n. Halobacteriota, the phylum of the Halobacteria class

Pronunciation (Latin), gender: ha-lo-bak-te-ri-O-ta, neuter

Type class: Halobacteria Grant et al. 2002

Original publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Methanobacteriota Garrity and Holt 2023

• Synonyms:

  • Name	Kind
    "Methanobacteraeota" Oren et al. 2015	heterotypic synonym, not validly published
    "Methanobacteriota" Whitman et al. 2018	heterotypic synonym, not validly published
    "Euryarchaeota" Garrity and Holt 2001	heterotypic synonym, not validly published
    Halobacteriota Chuvochina et al. 2024	homotypic synonym, validly published under the ICNP
    "Thermoplasmatota" Rinke et al. 2021	heterotypic synonym, not validly published
    Methanobacteriota Garrity and Holt 2023	heterotypic synonym, validly published under the ICNP
    Thermoplasmatota Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🧕 Rinke et al. (2021) assigned this phylum to the domain "Archaea" Woese et al. 1990. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class "Methanocellia" Rinke et al. 2021 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class "Methanosarcinia" Rinke et al. 2021 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class Halobacteria Grant et al. 2002 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class Methanonatronarchaeia Sorokin et al. 2018 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class Archaeoglobi Garrity and Holt 2002 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class "Methanomicrobia" Garrity et al. 2003 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the class "Candidatus Syntropharchaeia" Rinke et al. 2021 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🧒 Rinke et al. (2021) assigned the order Halobacteriales Grant and Larsen 1989 to this phylum. Publication: Rinke C, Chuvochina M, Mussig AJ, Chaumeil PA, Davin AA, Waite DW, Whitman WB, Parks DH, Hugenholtz P. A standardized archaeal taxonomy for the Genome Taxonomy Database. Nat Microbiol 2021; 6:946-959. 🇦🇺
  • 🛺 The type class of this phylum has been placed in the phylum Methanobacteriota Garrity and Holt 2023. Publication: Goker M, Oren A. Valid publication of four additional phylum names. Int J Syst Evol Microbiol 2023; 73:6024. 🇩🇪
  • 🚃 The type class of this phylum has alternatively been placed in the phylum "Euryarchaeota" Garrity and Holt 2001. Publication: Garrity GM, Holt JG. Phylum AII. Euryarchaeota phy. nov. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 211-355. 🇺🇸
  • 🚋 The type class of this phylum has alternatively been placed in the phylum Methanobacteriota Garrity and Holt 2023. Publication: Goker M, Oren A. Valid publication of four additional phylum names. Int J Syst Evol Microbiol 2023; 73:6024. 🇩🇪
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Oren A, Arahal DR, Ventosa A. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Halobacteria and Subcommittee on the Taxonomy of Halomonadaceae: minutes of the joint open meeting, 25 November 2025, Oaxaca, Mexico. Int J Syst Evol Microbiol 2026; 76:7065. 🇮🇱
  • 🤦 This taxon lacks a discernible description (protologue).

Parent taxon: Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024

Assigned by: LPSN automated production system. The following publication is only one of the sources consulted. It may or may not mention this taxon name. — Goker M, Oren A. Valid publication of names of two domains and seven kingdoms of prokaryotes. Int J Syst Evol Microbiol 2024; 74:6242. 🇩🇪

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Record number: 38582