Name: Thomasclavelia spiroformis (Kaneuchi et al. 1979) Lawson et al. 2023

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium spiroforme Kaneuchi et al. 1979 (Approved Lists 1980)

Etymology: spi.ro.for’mis. Gr. fem. n. speîra, a coil; L. fem. n. forma, shape; N.L. masc./fem. adj. spiroformis, in the shape of a coil

Gender: feminine

Type strain: ATCC 29900; CCUG 46510; CIP 106966; DSM 1552; JCM 1432; NCTC 11211; VPI C28-23-1A

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X73441 Analyse FASTA

Valid publication: Lawson PA, Saavedra Perez L, Sankaranarayanan K. Reclassification of Clostridium cocleatum, Clostridium ramosum, Clostridium spiroforme and Clostridium saccharogumia as Thomasclavelia cocleata gen. nov., comb. nov., Thomasclavelia ramosa comb. nov., gen. nov., Thomasclavelia spiroformis comb. nov. and Thomasclavelia saccharogumia comb. nov. Int J Syst Evol Microbiol 2023; 73:5694.

IJSEM list: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 73, part 1 of the IJSEM. Int J Syst Evol Microbiol 2023; 73:5835.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Clostridium spiroforme Kaneuchi et al. 1979 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • The terminology used by the authors is in line with many other taxonomic studies and does not negatively affect their main results; some improvements may nevertheless be possible. Contrasting the term "chemotaxonomic" with "phenotypic" is not recommended. The usage of the term "coherent taxon" (or equivalent) is cautioned against. See the LPSN phylogeny page for details. Publication: Göker M. What can genome analysis offer for bacteria? In: Bridge P, Smith D, Stackebrandt E (eds), Trends in the systematics of bacteria and fungi, CAB International, Wallingford, 2021, p. 255-281.

Parent taxon: Thomasclavelia Lawson et al. 2023

Assigned by: Lawson PA, Saavedra Perez L, Sankaranarayanan K. Reclassification of Clostridium cocleatum, Clostridium ramosum, Clostridium spiroforme and Clostridium saccharogumia as Thomasclavelia cocleata gen. nov., comb. nov., Thomasclavelia ramosa comb. nov., gen. nov., Thomasclavelia spiroformis comb. nov. and Thomasclavelia saccharogumia comb. nov. Int J Syst Evol Microbiol 2023; 73:5694.

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Record number: 36078