Name: Geobacillus debilis Banat et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: de’bi.lis. L. masc. adj. debilis, weak or feeble, referring to the restricted substrate range for this species

Pronunciation, gender: DE-bi-lis, masculine

Type strain: DSM 16016; NCIMB 13995; R-35653; Tf

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ564616 Analyse FASTA

Valid publication: Banat IM, Marchant R, Rahman TJ. Geobacillus debilis sp. nov., a novel obligately thermophilic bacterium isolated from a cool soil environment, and reassignment of Bacillus pallidus to Geobacillus pallidus comb. nov. Int J Syst Evol Microbiol 2004; 54:2197-2201.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 6 of the IJSEM. Int J Syst Evol Microbiol 2005; 55:551-554.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Caldibacillus debilis (Banat et al. 2004) Coorevits et al. 2012

Risk group: 1

• Synonyms:

  • Name	Kind
    Caldibacillus debilis (Banat et al. 2004) Coorevits et al. 2012	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Geobacillus debilis is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Geobacillus.
  • 😷 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 3 times in PubMed until 2025-06-04.

Parent taxon: Geobacillus Nazina et al. 2001

Assigned by: Banat IM, Marchant R, Rahman TJ. Geobacillus debilis sp. nov., a novel obligately thermophilic bacterium isolated from a cool soil environment, and reassignment of Bacillus pallidus to Geobacillus pallidus comb. nov. Int J Syst Evol Microbiol 2004; 54:2197-2201.

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Record number: 776441