Name: "Candidatus Frackibacter" Booker et al. 2017

Category: Genus

Proposed as: Candidatus

Etymology: Frac.ki.bac’ter. N.L. masc. n. bacter, a rod; N.L. masc. n. Frackibacter, a rod from fracking (hydraulic fracturing)

Gender, pronunciation (Latin): masculine (stem: Frackibacter-), frak-ki-BAK-ter

Type species: "Candidatus Frackibacter primus" Booker et al. 2017

Effective publication: Booker AE, Johnston MD, Daly RA, Wrighton KC, Wilkins MJ. Draft Genome Sequences of Multiple Frackibacter Strains Isolated from Hydraulically Fractured Shale Environments. Genome Announc 2017; 5:0. 🇺🇸

IJSEM list: Oren A, Garrity GM, Parker CT, Chuvochina M, Trujillo ME. Candidatus list no. 1. Lists of names of prokaryotic Candidatus taxa. Int J Syst Evol Microbiol 2020; 70:3956-4042.

Nomenclatural status: not validly published

Nomenclatural pro-status: pro-validly published under the ICNP

Taxonomic status: pro-correct name

• Synonyms:

  • Name	Kind
    "Candidatus Frackibacter" Daly et al. 2016	homotypic synonym, not pro-validly published

• Notes:
  • 🧕 Chuvochina et al. (2023) assigned this genus to the family Acetohalobiaceae Chuvochina et al. 2024. 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. 🇦🇺
  • 🧕 Yadav et al. (2020) assigned this genus to the order Halanaerobiales corrig. Rainey and Zhilina 1995. Publication: Yadav A, Vilcaez J, Farag IF, Johnson B, Mueller K, Youssef NH, Elshahed MS. Candidatus Mcinerneyibacterium aminivorans gen. nov., sp. nov., the first representative of the candidate phylum Mcinerneyibacteriota phyl. nov. recovered from a high temperature, high salinity tertiary oil reservoir in north central Oklahoma, USA. Syst Appl Microbiol 2020; 43:126057. 🇺🇸

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: 1

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Candidatus Frackibacter primus" Booker et al. 2017	not validly published	pro-correct name

Parent taxon: Halobacteroidaceae Zhilina and Rainey 1995

Assigned by: Freese HM, Meier-Kolthoff JP, Sarda Carbasse J, Afolayan AO, Goker M. TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity. Nucleic Acids Res 2026; 54:D884-D891. 🇩🇪

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Record number: 22246