Name: Thermofilum pendens Zillig and Gierl 1983

Category: Species

Proposed as: sp. nov.

Etymology: pen’dens. L. neut. part. adj. pendens, depending (growth depends on a factor from Thermoproteus species)

Pronunciation, gender: PEN-dens, neuter

Type strain: DSM 2475; Hvv3

See detailed strain information at

16S rRNA gene: X14835 Analyse FASTA

Effective publication: Zillig W, Gierl A, Schreiber G, Wunderl S, Janekovic D, Stetter KO, Klenk HP. The Archaebacterium Thermofilum pendens Represents, a Novel Genus of the Thermophilic, Anaerobic Sulfur Respiring Thermoproteales. Syst Appl Microbiol 1983; 4:79-87.

IJSEM list: Anonymous. Validation list no. 11. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1983; 33:672-674.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Thermofilum Zillig and Gierl 1983. Publication: Zillig W, Gierl A, Schreiber G, Wunderl S, Janekovic D, Stetter KO, Klenk HP. The Archaebacterium Thermofilum pendens Represents, a Novel Genus of the Thermophilic, Anaerobic Sulfur Respiring Thermoproteales. Syst Appl Microbiol 1983; 4:79-87.
  • ✏ The authority of the taxon name (Zillig and Gierl) 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 = "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 15 times in PubMed until 2025-06-04.

Parent taxon: Thermofilum Zillig and Gierl 1983

Assigned by: Zillig W, Gierl A, Schreiber G, Wunderl S, Janekovic D, Stetter KO, Klenk HP. The Archaebacterium Thermofilum pendens Represents, a Novel Genus of the Thermophilic, Anaerobic Sulfur Respiring Thermoproteales. Syst Appl Microbiol 1983; 4:79-87.

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Record number: 782596