List of bacterial orders Clostridia Bacillota Halarsenatibacter Selenihalanaerobacter Sporohalobacter 'The All-Species Living Tree' Project Halobacteroides Halanaerobaculum Acetohalobium Halocella Halanaerobacter Orenia Halanaerobium Halanaerobiales Bergey's Manual of Systematic Bacteriology Branching order of bacterial phyla (Gupta, 2001) Spirosomaceae Branching order of bacterial phyla (Woese, 1987) Desulfococcaceae Branching order of bacterial phyla (Ciccarelli et al., 2006) Pelobacteraceae Thermosediminibacterales Desulfonatronovibrionaceae Hydrobacteria Thermoguttaceae Desulfosarcinaceae Modulibacteria Adhaeretor Eobacteria PVC superp…

phylum Sedimentisphaeraceae Bacteroides ureolyticus Non-motile bacteria Natranaerofaba Arenimicrobiaceae Lentimonas Absiella Atribacter Sedimentisphaerales Branching order of bacterial phyla (Cavalier-Smith, 2002) Geobacterales Anaerohalosphaera Natranaerobiales Dictyoglomus thermophilum Quinella (bacterium) Sporichthyaceae Epidermidibacterium keratini Wolinella Raineya orbicola Brevitalea Negativicoccus Kryptonia Thermodesulfobiaceae Propionicimonas Desulfohalobium Frankiales Mariniluteicoccus Branching order of bacterial phyla (Battistuzzi et al., 2004) Fermentibacteria

Desulfobacula Thermolithobacteria Eggerthia Cumulibacter Geminisphaera Bdellovibrionota Peptostreptococcus Chlorobaculum tepidum Ammonifex Desulfosalsimonas Faecalibacillus Breznakia Cerasicoccus Asaccharobacter Microscillaceae Ornatilinea Blastocatella Geovibrio Caloribacterium Nibricoccus Desulfoconvexum Thermoflavimicrobium Brachyspiraceae Bernardetiaceae Anaerospora Anaeroglobus Simkania Thermodesulfobium Ileibacterium Desmospora Cloacibacillus Cryptobacterium Mycoplasmatota Caldithrix Bdellovibrionaceae Brevefilum Natranaerobaculum Natranaerobiaceae Caldimicrobium Ornithinimicrobiaceae Cesiribacteraceae Eurybacteria Berkelbacteria Numidum Graci