Name: Caldifarciminales Mori et al. 2026

Category: Order

Proposed as: ord. nov.

Etymology: Cal.di.far.ci.mi.na’les. N.L. neut. n. Caldifarcimen, a genus name; L. fem. pl. n. suff. -ales, ending to denote an order; N.L. fem. pl. n. Caldifarciminales, the Caldifarcimen order

Pronunciation (Latin), gender: kal-di-far-ki-mi-NA-les, feminine

Type genus: Caldifarcimen Mori et al. 2026

Valid publication: Mori K, Hidaka K, Tamazawa S, Hosoyama A, Tamaki H, Kakegawa T, Hanada S. Caldifarcimen microaerophilum gen. nov., sp. nov., a facultatively anaerobic, thermophilic bacterium of a novel bacterial phylum, Caldifarciminota phyl. nov., formerly called candidate phylum WOR-3, description of Caldifarciminaceae fam. nov., Caldifarciminales ord. nov. and Caldifarciminia classis nov. Int J Syst Evol Microbiol 2026; 76:7229. 🇯🇵

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    "Candidatus Hydrothermales" Chuvochina et al. 2023	heterotypic synonym, not pro-validly published
    "Candidatus Hydrothermales" Chuvochina et al. 2019	heterotypic synonym, not pro-validly published

• Notes:
  • 🧒 Mori et al. (2026) assigned the genus Caldifarcimen Mori et al. 2026 to this order. Publication: Mori K, Hidaka K, Tamazawa S, Hosoyama A, Tamaki H, Kakegawa T, Hanada S. Caldifarcimen microaerophilum gen. nov., sp. nov., a facultatively anaerobic, thermophilic bacterium of a novel bacterial phylum, Caldifarciminota phyl. nov., formerly called candidate phylum WOR-3, description of Caldifarciminaceae fam. nov., Caldifarciminales ord. nov. and Caldifarciminia classis nov. Int J Syst Evol Microbiol 2026; 76:7229. 🇯🇵
  • 🎰 The BRCs most frequently used for deposits in this group are: NBRC: 1; BCRC: 1.

Subdivision:

Number of child taxa with a validly published and correct name: 1
Number of child taxa with a validly published name, including synonyms: 1
Total number of child taxa: 3

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Caldifarciminaceae Mori et al. 2026	validly published under the ICNP	correct name
    "Candidatus Hydrothermaceae" Chuvochina et al. 2023	not validly published	synonym
    "Candidatus Hydrothermaceae" Chuvochina et al. 2019	not validly published	synonym

Parent taxon: Caldifarciminia Mori et al. 2026

Assigned by: Mori K, Hidaka K, Tamazawa S, Hosoyama A, Tamaki H, Kakegawa T, Hanada S. Caldifarcimen microaerophilum gen. nov., sp. nov., a facultatively anaerobic, thermophilic bacterium of a novel bacterial phylum, Caldifarciminota phyl. nov., formerly called candidate phylum WOR-3, description of Caldifarciminaceae fam. nov., Caldifarciminales ord. nov. and Caldifarciminia classis nov. Int J Syst Evol Microbiol 2026; 76:7229. 🇯🇵

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Record number: 72804