[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Thermotogae" Reysenbach 2002 stat. inval. see Phylum Thermotogota Reysenbach 2021
       Class Thermotogae Reysenbach 2002
         Order Thermotogales Reysenbach 2002
           Family Thermotogaceae Reysenbach 2002
             Genus Petrotoga Davey et al. 1993
               1 Petrotoga miotherma Davey et al. 1993
               2 Petrotoga mexicana Miranda-Tello et al. 2004
               3 Petrotoga mobilis Lien et al. 1998
               4 Petrotoga olearia L'Haridon et al. 2002
               5 Petrotoga sibirica L'Haridon et al. 2002