prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Thermotogae" Reysenbach 2001 [monotypic] Class Thermotogae Reysenbach 2002 Order Thermotogales Reysenbach 2002 [monotypic] 1 Family Thermotogaceae Reysenbach 2002