Thermosipho

Thermosipho is a genus of Gram-negative staining, anaerobic, and mostly thermophilic and hyperthermophilic bacteria in the family Thermotogaceae.

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).

Species incertae sedis:
 * Thermosipho ferriphilus Kendall et al. 2002