Name: Caloramator fervidus (Patel et al. 1987) Collins et al. 1994

Category: Species

Proposed as: comb. nov.

Basonym: Clostridium fervidum corrig. Patel et al. 1987

Etymology: fer’vi.dus. L. masc. adj. fervidus, hot

Pronunciation, gender: FER-wi-dus, masculine

Type strain: ATCC 43204; DSM 5463; Rt4-B1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: L09187 Analyse FASTA

Valid publication: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 4 of the IJSB. Int J Syst Bacteriol 1995; 45:199-200.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Clostridium fervidum corrig. Patel et al. 1987	homotypic synonym, validly published under the ICNP
    Clostridium fervidus Patel et al. 1987	homotypic synonym, inaccurate spelling

• Emendations:
  • Ogg and Patel 2011 Ogg CD, Patel BK. Caloramator mitchellensis sp. nov., a thermoanaerobe isolated from the geothermal waters of the Great Artesian Basin of Australia, and emended description of the genus Caloramator. Int J Syst Evol Microbiol 2011; 61:644-653. Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 3 of the IJSEM. Int J Syst Evol Microbiol 2011; 61:1237-1238.

• Notes:
  • 🥇 Nomenclatural type of the genus Caloramator Collins et al. 1994. Publication: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — 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.
  • 🎓 Name mentioned 11 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: Caloramator Collins et al. 1994

Assigned by: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826.

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Record number: 774359