Belongs within: Life. The Crenarchaeota are a clade of thermophilic prokaryotes that typically metabolise sulphur (Garrity & Holt 2001). Characters (from Garrity & Holt 2001): Morphologically diverse, including rods, cocci, filamentous forms and disk-shaped cells. Stain Gram-negative. Occasionally motile. Obligately thermophilic, growth occuring at temperatures from 70–113°C. Acidophilic. Aerobic, facultatively anaerobic or strictly anaerobic chemolithoautotrophs… Continue reading Crenarchaeota