Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Thermotogae Reysenbach 2001 [monotypic] Class Thermotogae Reysenbach 2001 [monotypic] see Class Thermotogae Reysenbach 2002 Order Thermotogalesᵀ Reysenbach 2001 [monotypic] see Order Thermotogales Reysenbach 2002 Family Thermotogaceae Reysenbach 2001 see Family Thermotogaceae Reysenbach 2002 Genus Thermosipho Huber et al. 1989