Species "Bacillus thetaiotaomicron"

Name: "Bacillus thetaiotaomicron" Distaso 1912

Category: Species

Proposed as: sp. nov.

Etymology: the.ta.io.ta.o.mi’cron. N.L. neut. n. thetaiotaomicron, a combination of the Greek letters theta, iota and omicron, relating to the morphology of vacuolated forms (nominative in apposition)

Pronunciation, gender: t^he-ta-io-ta-o-MI-kron, masculine

Nomenclatural type: ATCC 29148; CCUG 10774; CIP 104206; DSM 2079; JCM 5827; NCTC 10582; VPI 5482

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M58763 Analyse FASTA

Original publication: Distaso A. Contribution à l'étude sur l'intoxication intestinale. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I 1912; 62:433-468.

Nomenclatural status: not validly published, basonym of name in Approved Lists

Taxonomic status: synonym (and no standing)

Correct name: Bacteroides thetaiotaomicron (Distaso 1912) Castellani and Chalmers 1919 (Approved Lists 1980)

Risk group: 2

Synonyms:

Name	Kind
"Bacteroides fragilis subsp. thetaiotaomicron" (Distaso 1912) Holdeman and Moore 1970	homotypic synonym, not validly published, distinct rank
Bacteroides thetaiotaomicron (Distaso 1912) Castellani and Chalmers 1919 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

Notes:
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — 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.

Parent taxon: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Distaso A. Contribution à l'étude sur l'intoxication intestinale. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung I 1912; 62:433-468.

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Record number: 4086

This LPSN page was printed on 2026-01-19 02:38:28

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Species "Bacillus thetaiotaomicron"