Name: "Tyzzerella nexilis" (Holdeman and Moore 1974) Yutin and Galperin 2013

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium nexile Holdeman and Moore 1974 (Approved Lists 1980)

Etymology: ne’xi.lis. L. fem. adj. nexilis, tied or bound together, referring to its chain formation

Pronunciation, gender: NE-xi-lis, feminine

Nomenclatural type: ATCC 27757; DSM 1787

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X73443 Analyse FASTA

Original publication: Yutin N, Galperin MY. A genomic update on clostridial phylogeny: Gram-negative spore formers and other misplaced clostridia. Environ Microbiol 2013; 15:2631-2641.

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Clostridium nexile Holdeman and Moore 1974 (Approved Lists 1980)

• Synonyms:

  • Name	Kind
    Clostridium nexile Holdeman and Moore 1974 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus "Tyzzerella" Yutin and Galperin 2013. Publication: Yutin N, Galperin MY. A genomic update on clostridial phylogeny: Gram-negative spore formers and other misplaced clostridia. Environ Microbiol 2013; 15:2631-2641.

Parent taxon: "Tyzzerella" Yutin and Galperin 2013

Assigned by: Yutin N, Galperin MY. A genomic update on clostridial phylogeny: Gram-negative spore formers and other misplaced clostridia. Environ Microbiol 2013; 15:2631-2641.

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Record number: 7635