Name: "Caecibacterium sporoformans" Onrust et al. 2017

Category: Species

Proposed as: sp. nov.

Etymology: spo.ro.for’mans. Gr. fem. n. spora, a seed; L. pres. part. formans, that gives shape, form; N.L. neut. part. adj. sporoformans, sporeforming

Pronunciation (Latin), gender: … spo-ro-FOR-mans, neuter

Nomenclatural type: DSM 103070; DSM 26959; LMG 27730

See detailed strain information at

16S rRNA gene: HQ452857 Analyse FASTA

Original publication: Onrust L, Petzoldt D, Eeckhaut V, De Maesschalck C, Haesebrouck F, Rautenschlein S, Ducatelle R, Van Immerseel F, Taras D. Caecibacterium sporoformans gen. nov., sp. nov., an anaerobic, butyrate-producing, spore-forming bacterium isolated from chicken caecum. Int J Syst Evol Microbiol 2017; 67:4589-4594. 🇧🇪

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Caecibacterium sporoformans Oren et al. 2019

Risk group: 1

• Synonyms:

  • Name	Kind
    Caecibacterium sporoformans Oren et al. 2019	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus "Caecibacterium" Onrust et al. 2017. Publication: Onrust L, Petzoldt D, Eeckhaut V, De Maesschalck C, Haesebrouck F, Rautenschlein S, Ducatelle R, Van Immerseel F, Taras D. Caecibacterium sporoformans gen. nov., sp. nov., an anaerobic, butyrate-producing, spore-forming bacterium isolated from chicken caecum. Int J Syst Evol Microbiol 2017; 67:4589-4594. 🇧🇪
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🧍 Considered not validly published. Publication: Oren A, Arahal DR, Goker M, Moore ERB, Rossello-Mora R, Sutcliffe IC. International Code of Nomenclature of Prokaryotes. Prokaryotic Code (2022 Revision). Int J Syst Evol Microbiol 2023; 73:5585. 🇮🇱

Parent taxon: "Caecibacterium" Onrust et al. 2017

Assigned by: Onrust L, Petzoldt D, Eeckhaut V, De Maesschalck C, Haesebrouck F, Rautenschlein S, Ducatelle R, Van Immerseel F, Taras D. Caecibacterium sporoformans gen. nov., sp. nov., an anaerobic, butyrate-producing, spore-forming bacterium isolated from chicken caecum. Int J Syst Evol Microbiol 2017; 67:4589-4594. 🇧🇪

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Record number: 8798