Did Life Start Out Hot? Eucarya Plants Microsporidia Animals Flagellates Fungi Ciliates Slime molds Diplomonads Green non-sulfur bacteria Bacteria Archaea Sulfolobus Gram positive Desulfurococcus Purple bacteria Thermotoga Thermofilum Flavobacteria Thermoproteus Pyrodictium Cyanobacteria Pyrobaculum Thermococcus Methanothermus Methanobacterium Archaeoglobus Mc.jannaschi Halococcus Methanopyrus c.igneus Halobacterium Aquifex Mc.thermolithotrophicus Methanoplanus Methanospirillum Methano sarcina KO Stetter.1996.FEMS Microbiol.Rev.18:149Did Life Start Out Hot? KO Stetter. 1996. FEMS Microbiol. Rev. 18:149