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.
Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).
16S rRNA based LTP_10_2024 120 marker proteins based GTDB 10-RS226
Unassigned species: "Aquifex aeolicus" Huber and Stetter 2001
See also List of bacterial orders List of bacteria genera
References 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