List of bacterial orders Branching order of bacterial phyla (Genome Taxonomy Database, 2018) Bergey's Manual of Systematic Bacteriology Eobacteria Branching order of bacterial phyla (Gupta, 2001) Spirosomaceae Hydrobacteria Branching order of bacterial phyla (Ciccarelli et al., 2006) Pelobacteraceae Modulibacteria PVC superphylum Sedimentisphaeraceae Thermoguttaceae Desulfosarcinaceae Thermosediminibacterales Desulfonatronovibrionaceae Arenimicrobiaceae Lentimonas Geobacterales Branching order of bacterial phyla (Cavalier-Smith, 2002) Desulfococcaceae Branching order of bacterial phyla (Woese, 1987) Non-motile bacteria Ureaplasma loridis Bacteroides ureolyticus Natranaerofaba Cesiribacteraceae Adhaeretor Atribacter Sedimentisphaerales…

s Absiella Dictyoglomus thermophilum Propionicimonas Natranaerobiales Raineya orbicola Thermodesulfobiaceae Mariniluteicoccus Wolinella Negativicoccus Anaerohalosphaera Quinella (bacterium) Kryptonia Sporichthyaceae Brevitalea Halarsenatibacter Epidermidibacterium keratini Desulfohalobium Frankiales Gracilibacteria Eurybacteria Berkelbacteria Numidum Holophagaceae Thermanaeromonas Ereboglobus Catenibacterium

Polycladomyces Oligoflexia Allobaculum Tepidisphaeraceae Lottiidibacillus Bellilinea Dehalococcoidia Selenihalanaerobacter Mechercharimyces Catenisphaera Caldilinea Desulforhopalus Tepidisphaera Ilumatobacteraceae Desulfonatronobacter Oleiharenicola Natronoanaerobium Wirthbacteria Dethiobacter Rariglobus Faecalibaculum Brevifollis Natranaerobius Cetobacterium Coprothermobacter Halobacteroides Zavarzinella Seinonella Aquifex Thiotrichales Fermentibacteria Branching order of bacterial phyla (Battistuzzi et al., 2004) Orbales Katanobacteria Syntrophales Silvanigrellales Thermoflavimicrobium Simkania Br