Name: Megasphaera stantonii Maki and Looft 2018

Category: Species

Proposed as: sp. nov.

Etymology: stan.to’ni.i. N.L. gen. masc. n. stantonii, of Stanton, named in honour of Thaddeus Stanton, an American microbiologist who contributed to the characterization of the genus Megasphaera and other intestine-associated microorganisms

Pronunciation (Latin), gender: … stan-TO-ni-i, feminine

Type strain: AJH120; CCUG 71842; DSM 106750

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: MG811574 Analyse FASTA

Valid publication: Maki JJ, Looft T. Megasphaera stantonii sp. nov., a butyrate-producing bacterium isolated from the cecum of a healthy chicken. Int J Syst Evol Microbiol 2018; 68:3409-3415. 🇺🇸

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 68, part 11 of the IJSEM. Int J Syst Evol Microbiol 2019; 69:297-298.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Megasphaera butyrica Hitch et al. 2022	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Heng et al. (2025), this species is an earlier heterotypic synonym of Megasphaera butyrica Hitch et al. 2022. Publication: Heng YC, Lee JKY, Silvaraju S, Kittelmann S. Description of Megasphaera jansseni sp. nov., a novel short- and medium-chain fatty acid-producing species isolated from faeces of a wild boar (Sus scrofa), and a taxonomic note on the family Veillonellaceae. Int J Syst Evol Microbiol 2025; 75:6937. 🇸🇬
  • 🎓 Name mentioned 3 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Megasphaera Rogosa 1971 (Approved Lists 1980)

Assigned by: Maki JJ, Looft T. Megasphaera stantonii sp. nov., a butyrate-producing bacterium isolated from the cecum of a healthy chicken. Int J Syst Evol Microbiol 2018; 68:3409-3415. 🇺🇸

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Record number: 797941