Name: Pyrococcus woesei Zillig 1988

Category: Species

Proposed as: sp. nov.

Etymology: woe’se.i. N.L. gen. masc. n. woesei, of Woese, named for C.R. Woese, who recognized Archaea and their testimony for phylogeny

Pronunciation (Latin), gender: … WO͡E-se-i, masculine

Type strain: ATCC 49860; DSM 3773; JCM 8421

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: HE654000 Analyse FASTA

Effective publication: Zillig W, Holz I, Klenk H-P, Trent J, Wunderl S, Janekovic D, Imsel E, Haas B. Pyrococcus woesei, sp. nov., an ultra-thermophilic marine Archaebacterium, representing a novel order, Thermococcales. Syst. Appl. Microbiol. 1987; 9:62-70. 🇩🇪

IJSEM list: Anonymous. Validation list no. 24. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1988; 38:136-137.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Pyrococcus furiosus subsp. woesei" (Zillig 1988) Kanoksilapatham et al. 2004	homotypic synonym, not validly published, distinct rank

• Notes:
  • ✏ The authority of the taxon name (Zillig) deliberately differs from the authors of the publication (Zillig et al.).
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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 63 times in PubMed until 2025-06-04.
  • 🧍 Complete authorship reads: Zillig 1988 in Zillig, Holz, Klenk, Trent, Wunderl, Janekovic, Imsel and Haas 1987.
  • 🧍 The name Pyrococcus woesei must be attributed to Zillig 1988 (in Zillig, Holz, Klenk, Trent, Wunderl, Janekovic, Imsel and Haas) not to Zillig et al. 1988 as cited in Validation List no. 24. Publication: Stetter KO, Huber H. Genus II. Pyrococcus Fiala and Stetter 1986b, 573VP (Effective publication Fiala and Stetter 1986a, 60). In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 346-348. 🇺🇸

Parent taxon: Pyrococcus Fiala and Stetter 1986

Assigned by: Zillig W, Holz I, Klenk H-P, Trent J, Wunderl S, Janekovic D, Imsel E, Haas B. Pyrococcus woesei, sp. nov., an ultra-thermophilic marine Archaebacterium, representing a novel order, Thermococcales. Syst. Appl. Microbiol. 1987; 9:62-70. 🇩🇪

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Record number: 780281