Tautonia |  sociabilis |  | 
 Telmatocola |  sphagniphila |  | 
 Telmatospirillum |  siberiense |  | 
 Tenuifilum |  osseticum |  | 
|   | sp. |  | 
|   | thalassicum |  | 
 Tepidibacillus |  fermentans |  | 
|   | infernus |  | 
 Tepidibacter |  thalassicus |  | 
 Tepidibaculum |  saccharolyticum |  | 
 Tepidiforma |  bonchosmolovskayae |  | 
 Tepidimicrobium |  ferriphilum |  | 
|   | ningboensis |  | 
 Tepidisphaera |  mucosa |  | 
 Tepiditomix |  sp. |  | 
 Termospira |  electa |  | 
 Terrabacter |  tumescens |  | 
 Tetragenococcus |  halophilus |  | 
 Tetrathiobacter |  kashmirensis |   See Advenella kashmirensis | 
 Thalassospira |  permensis |  | 
|   | profundimaris |  | 
|   | tepidiphila |  | 
|   | xiamenensis |  | 
 Thauera |  hydrothermalis |   See Pseudothauera hydrothermalis | 
 Thermaerobacter |  baikalensis |  | 
 Thermanaerothrix |  solaris |  | 
|   | sp. |  | 
 Thermincola |  carboxydiphila |  | 
 Thermoactinomyces |  candidus |   See Thermoactinomyces vulgaris | 
 Thermoactinomyces |  dichotomicus |   See Thermoflavimicrobium dichotomicum | 
 Thermoactinomyces |  intermedius |  | 
|   |  putidus |   See Laceyella putida | 
|   |  sacchari |   See Laceyella sacchari | 
|   |  thalpophilus |   See Laceyella sacchari | 
|   |  viridis |   See Saccharomonospora viridis | 
|   | vulgaris |  | 
 Thermoanaerobacter |  acetoethylicus |  | 
|   | brockii |  | 
|   | ethanolicus |  | 
|   | pentosaceus |  | 
|   | siderophilus |  | 
|   | thermohydrosulfuricus |  | 
 Thermoanaerobacterium |  aciditolerans |  | 
|   | thermosaccharolyticum |  | 
 Thermoanaerobium |  brockii |   See Thermoanaerobacter brockii | 
 Thermoanaerobium |  lactoethylicum |  | 
|   | sp. |  | 
 Thermobacterium |  helveticum |   See Lactobacillus helveticus | 
 Thermobacterium |  intestinale |   See Lactobacillus acidophilus | 
 Thermobacteroides |  acetoethylicus |   See Thermoanaerobacter acetoethylicus | 
 Thermobifida |  fusca |  | 
 Thermococcus |  gorgonarius |  | 
|   | pacificus |  | 
|   | sibiricus |  | 
|   | stetteri |  | 
 Thermodesulfitimonas |  autotrophica |  | 
 Thermodesulfobacterium |  commune |  | 
|   | mobile |  | 
 Thermodesulfobium |  acidiphilum |  | 
 Thermodesulfovibrio |  sp. |  | 
 Thermofilum |  adornatum |  | 
|   | uzonense |  | 
 Thermoflavimicrobium |  dichotomicum |  | 
 Thermogemmata |  fonticola |  | 
 Thermogladius |  calderae |  | 
 Thermogutta |  hypogea |  | 
|   | terrifontis |  | 
 Thermohydrogenium |  kirishiense |  | 
 Thermomonas |  fusca |  | 
 Thermomonospora |  chromogena |  | 
|   | curvata |  | 
|   |  formosensis |   See Actinomadura formosensis | 
|   |  fusca |   See Thermobifida fusca | 
|   |  mesophila |   See Sphaerimonospora mesophila | 
|   | umbrina |  | 
 Thermoplasma |  sp. |  | 
 Thermopolyspora |  rectivirgula |   See Saccharopolyspora rectivirgula | 
 Thermosinus |  carboxydivorans |  | 
 Thermosipho |  activus |  | 
|   | affectus |  | 
 Thermostaphylospora |  chromogena |  | 
 Thermostilla |  marina |  | 
 Thermosulfurimonas |  dismutans |  | 
|   | marina |  | 
 Thermosulfuriphilus |  ammonigenes |  | 
 Thermoterrabacterium |  ferrireducens |   See Carboxydothermus ferrireducens | 
 Thermotoga |  agilis |  | 
|   | neapolitana |  | 
|   | sp. |  | 
 Thermovenabulum |  ferriorganovorum |  | 
 Thermus |  brevis |  | 
|   |  ruber |   See Meiothermus ruber | 
|   | sp. |  | 
|   | thermophilus |  | 
 Thialkalicoccus |  limnaeus |   See Thioalkalicoccus limnaeus | 
 Thialkalivibrio |  sp. |  | 
 Thioalkalibacter |  halophilus |  | 
 Thioalkalicoccus |  limnaeus |  | 
 Thioalkalimicrobium |  aerophilum |  | 
|   | cyclicum |  | 
|   | sibiricum |  | 
|   | sp. |  | 
 Thioalkalispira |  microaerophila |  | 
 Thioalkalivibrio |  denitrificans |  | 
|   | halophilus |  | 
|   | jannaschii |  | 
|   | nitratireducens |  | 
|   | nitratis |  | 
|   | paradoxus |  | 
|   | sp. |  | 
|   | sulfidiphilus |  | 
|   | thiocyanodenitrificans |  | 
|   | thiocyanoxidans |  | 
|   | versutus |  | 
 Thiobacillus |  novellus |   See Starkeya novella | 
 Thiobacillus |  rapidicrescens |   See Paracoccus versutus | 
 Thiobacillus |  versutus |   See Paracoccus versutus | 
 Thioclava |  pacifica |  | 
 Thiofaba |  sp. |  | 
 Thioflexithrix |  psekupsensis |  | 
|   | sp. |  | 
 Thiohalobacter |  thiocyanaticus |  | 
 Thiohalomonas |  denitrificans |  | 
|   | nitratireducens |  | 
 Thiohalophilus |  thiocyanatoxydans |  | 
 Thiohalorhabdus |  denitrificans |  | 
 Thiohalospira |  alkaliphila |  | 
|   | halophila |  | 
|   | sp. |  | 
 Thiomicrospira |  halophila |  | 
 Thiorhodococcus |  mannitoliphagus |  | 
 Thiorhodospira |  sp. |  | 
 Thiosphaera |  pantotropha |   See Paracoccus denitrificans | 
 Thiospirochaeta |  perfilievii |  | 
 Thiothrix |  caldifontis |  | 
|   | lacustris |  | 
|   | litoralis |  | 
|   | nivea |  | 
|   | sp. |  | 
|   | subterranea |  | 
|   | winogradskyi |  | 
 Tibeticola |  sp. |  | 
 Tindallia |  californiensis |  | 
|   | magadiensis |  | 
|   | sp. |  | 
 Trichococcus |  palustris |  | 
|   | shcherbakoviae |  | 
 Trichotomospora |  caesia |  | 
 Tsukamurella |  paurometabola |  | 
|   |  wratislaviensis |   See Rhodococcus wratislaviensis | 
 Tuberoidobacter |  mutans |  | 
 Tundrisphaera |  lichenicola |  |