Picrophilus Schleper et al. 1996 Picrophilus oshimae Schleper et al. 1996 Universal Root Woese et al. 1990 Archaea Woese et al. 1990 Thermoplasmatota Rinke et al. 2019 Thermoplasmata Reysenbach 2002 Thermoplasmatales Reysenbach 2002 Picrophilaceae Schleper et al. 1996 Picrophilus Schleper et al. 1996 Picrophilaceae Schleper et al. 1996 Picrophilus torridus Schleper et al. 1996 Picrophilus oshimae Schleper et al. 1996 Schleper C. Pühler G. Klenk H.P. Zillig W. Picrophilus oshimae and Picrophilus torridus fam. nov., gen. nov., sp. nov., two species of hyperacidophilic, thermophilic, heterotrophic, aerobic archaea. 1996 46 3 814 816 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-46-3-814