[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain "Archaea" Woese et al. 1990 Phylum "Euryarchaeota" Garrity and Holt 2001 Class Thermoplasmata Reysenbach 2002 Order Thermoplasmatales Reysenbach 2002 Family Picrophilaceae Schleper et al. 1996 Genus Picrophilus Schleper et al. 1996 Picrophilus torridus Zillig et al. 1996