Name: "Candidatus Gracilibacteria" Yakimov et al. 2022

Category: Class

Proposed as: Candidatus

Etymology: N.L. neut. pl. n. bacteria, plural of bacterium; N.L. neut. pl. n. Gracilibacteria, name not formed from name of nomenclatural type

Gender: neuter

Type genus: "Candidatus Altimarinus" Rinke et al. 2013

Original publication: Yakimov MM, Merkel AY, Gaisin VA, Pilhofer M, Messina E, Hallsworth JE, Klyukina AA, Tikhonova EN, Gorlenko VM. Cultivation of a vampire: 'Candidatus Absconditicoccus praedator'. Environ Microbiol 2022; 24:30-49.

Nomenclatural status: not validly published

Nomenclatural pro-status: not pro-validly published

Taxonomic status: preferred name (not pro-correct name)

• Notes:
  • 🧕 Chuvochina et al. (2023) assigned this class to the phylum "Candidatus Patescibacteria" Parks et al. 2018. Publication: Chuvochina M, Mussig AJ, Chaumeil PA, Skarshewski A, Rinke C, Parks DH, Hugenholtz P. Proposal of names for 329 higher rank taxa defined in the Genome Taxonomy Database under two prokaryotic codes. FEMS Microbiol Lett 2023; 0:0.
  • 🧕 Yakimov et al. (2022) assigned this class to the phylum "Candidatus Patescibacteria" Parks et al. 2018. Publication: Yakimov MM, Merkel AY, Gaisin VA, Pilhofer M, Messina E, Hallsworth JE, Klyukina AA, Tikhonova EN, Gorlenko VM. Cultivation of a vampire: 'Candidatus Absconditicoccus praedator'. Environ Microbiol 2022; 24:30-49.
  • 🧒 Chuvochina et al. (2023) assigned the order "Candidatus Peribacterales" Anantharaman et al. 2016 to this class. Publication: Chuvochina M, Mussig AJ, Chaumeil PA, Skarshewski A, Rinke C, Parks DH, Hugenholtz P. Proposal of names for 329 higher rank taxa defined in the Genome Taxonomy Database under two prokaryotic codes. FEMS Microbiol Lett 2023; 0:0.
  • 🧒 Yakimov et al. (2022) assigned the family "Candidatus Absconditicoccaceae" Yakimov et al. 2022 to this class. Publication: Yakimov MM, Merkel AY, Gaisin VA, Pilhofer M, Messina E, Hallsworth JE, Klyukina AA, Tikhonova EN, Gorlenko VM. Cultivation of a vampire: 'Candidatus Absconditicoccus praedator'. Environ Microbiol 2022; 24:30-49.
  • 🧍 While the authors did not explicitly propose this taxon name, they did not provide a proper citation of the authority of the name either.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 0
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Candidatus Absconditabacterales" Yakimov et al. 2022	not validly published	preferred name (not pro-correct name)
    [Gracilibacteria, not assigned to order]	artificial parent node of taxa incertae sedis

Parent taxon: Minisyncoccota Nakajima et al. 2025

Assigned by: Nakajima M, Nakai R, Hirakata Y, Kubota K, Satoh H, Nobu MK, Narihiro T, Kuroda K. Minisyncoccus archaeiphilus gen. nov., sp. nov., a mesophilic, obligate parasitic bacterium and proposal of Minisyncoccaceae fam. nov., Minisyncoccales ord. nov., Minisyncoccia class. nov. and Minisyncoccota phyl. nov. formerly referred to as Candidatus Patescibacteria or candidate phyla radiation. Int J Syst Evol Microbiol 2025; 75:6668.

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Record number: 39013