Thermoacidophile Alicyclobacillus cycloheptanicus Alicyclobacillus vulcanalis Saccharolobus shibatae Metallosphaera Aneurinibacillus terranovensis Aciduliprofundum boonei Picrophilus oshimae Thermoplasmataceae Picrophilus torridus Metallosphaera sedula Acidilobus saccharovorans Chemotroph Galdieria partita Thermoplasma volcanium Acidithiobacillus Glycerol dialkyl glycerol tetraether Sulfolobus solfataricus Three-domain system Unique properties of hyperthermophilic archaea Microbial genetics Biological carbon fixation Two-domain system Mount Melbourne