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Scientific classification e
Domain: Bacteria
Phylum: Aquificae
Order: Aquificales
Family: Aquificaceae
Reysenbach, 2002

The Aquificaceae family are bacteria that live in harsh environmental settings such as hot springs, sulfur pools, and hydrothermal vents. Although they are true bacteria as opposed to the other inhabitants of extreme environments, the Archaea, Aquificaceae genera are an early phylogenetic branch.[1]


Family Aquificaceae[2]

  • Aquifex Huber and Stetter 1992
    • A. aeolicusHuber and Stetter 2001
    • A. pyrophilus Huber and Stetter 1992
  • Hydrogenivirga Nakagawa et al. 2004
    • H. caldilitoris Nakagawa et al. 2004
    • H. okinawensis Nunoura et al. 2008
  • Hydrogenobacter Kawasumi et al. 1984
    • H. hydrogenophilus (Kryukov et al. 1984) Stöhr et al. 2001
    • H. subterraneus Takai et al. 2001
    • H. thermophilus Kawasumi et al. 1984
  • Hydrogenobaculum Stöhr et al. 2001
    • Hydrogenobaculum acidophilum (Shima and Suzuki 1993) Stöhr et al. 2001
  • Thermocrinis Huber et al. 1999
    • T. albus Eder and Huber 2002
    • T. minervae Caldwell et al. 2010
    • T. ruber Huber et al. 1999

♠ Strain found at the National Center for Biotechnology Information (NCBI) but has no standing with the Bacteriological Code (1990 and subsequent Revision) as detailed by List of Prokaryotic names with Standing in Nomenclature (LPSN) as a result of the following reasons:
• No pure culture isolated or available for Prokayotes.
• Not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection.
• Not approved and published by the International Journal of Systematic Bacteriology or the International Journal of Systematic and Evolutionary Microbiology (IJSB/IJSEM).


  • Reysenbach A-L, Phylum BI (2001) Aquificae phy. nov. In: Boone DR, Castenholz RW (eds) Bergey’s Manual of Systematic Bacteriology. Springer-Verlag, Berlin, 2nd edn., pp. 359–367
  1. ^ Madigan M; Martinko J (editors). (2005). Brock Biology of Microorganisms (11th ed.). Prentice Hall. ISBN 0-13-144329-1. 
  2. ^ J.P. Euzéby. "Aquificaceae". List of Prokaryotic names with Standing in Nomenclature. Archived from the original on 13 June 2011. Retrieved 2011-06-11.