procaryotes
   Domain Bacteria Woese et al. 1990
     Phylum Thermotogae Reysenbach 2001
       Class Thermotogae Reysenbach 2001 see Class Thermotogae Reysenbach 2002
         Order Thermotogales Reysenbach 2001 see Order Thermotogales Reysenbach 2002
           1 Family Thermotogaceae Reysenbach 2001 see Family Thermotogaceae Reysenbach 2002