[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Thermotogae" Reysenbach 2001
       Class Thermotogae Reysenbach 2002
         Order Thermotogales Reysenbach 2002
           Family Thermotogaceae Reysenbach 2002
             1 Genus Thermotoga Stetter and Huber 1986
             2 Genus Fervidobacterium Patel et al. 1985
             3 Genus Geotoga Davey et al. 1993
             4 Genus Marinitoga Wery et al. 2001
             5 Genus Petrotoga Davey et al. 1993
             6 Genus Thermosipho Huber et al. 1989