Name: Megamonas hypermegas (Harrison and Hansen 1963) Shah and Collins 1983

Category: Species

Proposed as: comb. nov.

Basonym: Bacteroides hypermegas Harrison and Hansen 1963 (Approved Lists 1980)

Pronunciation, gender: hy-PER-me-gas, feminine

Type strain: ATCC 25560; CCUG 5856; DSM 1672; LMG 3890; NCTC 10570

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ420107 Analyse FASTA

Effective publication: Shah HN, Collins MD. Reclassification of Bacteroides hypermegas (Harrison and Hansen) in a new genus Megamonas, as Megamonas hypermegas comb. nov. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. 1982; C3:394-398.

IJSEM list: Anonymous. Validation list no. 10. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1983; 33:438-440.

Nomenclatural status: inaccurate spelling

Taxonomic status: misspelling (and not recommended for medical use)

Correct name: Megamonas hypermegale corrig. (Harrison and Hansen 1963) Shah and Collins 1983

• Synonyms:

  • Name	Kind
    Bacteroides hypermegas Harrison and Hansen 1963 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Megamonas hypermegale corrig. (Harrison and Hansen 1963) Shah and Collins 1983	corrected spelling of name, validly published under the ICNP

• Notes:
  • 🎓 Name mentioned 0 times in PubMed until 2025-06-04.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of the species itself.
  • 🧍 Nom. corrig.: IJSB 48:1073. Publication: Euzéby JP. Taxonomic note: necessary correction of specific and subspecific epithets according to Rules 12c and 13b of the International Code of Nomenclature of Bacteria (1990 Revision). Int. J. Syst. Bacteriol. 1998; 48:1073-1075.

Parent taxon: Megamonas Shah and Collins 1983

Assigned by: Shah HN, Collins MD. Reclassification of Bacteroides hypermegas (Harrison and Hansen) in a new genus Megamonas, as Megamonas hypermegas comb. nov. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. 1 Orig. 1982; C3:394-398.

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Record number: 784191