[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 1990 Phylum "Aquificae" Reysenbach 2001 Class "Aquificae" Reysenbach 2002 Order Aquificales Reysenbach 2002 Family Aquificaceae Reysenbach 2002 Genus Hydrogenobacter Kawasumi et al. 1984 Hydrogenobacter thermophilus Kawasumi et al. 1984