Streptomyces + + + + S Sulfolobus 0 + + + Zygomycota + S Zymomonas - + + + + Thermacae + + Thermodesulfo-bacterium - + + + + + + Thermoproteus + + + Thermotogales - + + + Thermus + + Thiobacillus - + + M + + Treponema pallidum - +