Phylum XIII Firmicutes
Class I “Bacilli
Order I Bacillales
Family I Bacillaceae
Genus I Bacillus
Genus II Alkalibacillus
Genus III Amphibacillus
Genus IV Anoxybacillus
Genus V Cerasibacillus
Genus VI Filobacillus
Genus VII Geobacillus
Genus VIII Gracilibacillus
Genus IX Halobacillus
Genus X Halolactibacillus
Genus XI Lentibacillus
Genus XII Marinococcus
Genus XIII Oceanobacillus
Genus XIV Paraliobacillus
Genus XV Pontibacillus
Genus XVI Saccharococcus
Genus XVII Tenuibacillus
Genus XVIII Thalassobacillus
Genus XIX Virgibacillus
Family II “Alicyclobacillaceae
Genus I Alicyclobacillus
Family III “Listeriaceae
Genus I Listeria
Genus II Brochothrix
Family IV “Paenibacillaceae” 
Genus I Paenibacillus
Genus II Ammoniphilus
Genus III Aneurinibacillus
Genus IV Brevibacillus
Genus V Cohnella
Genus VI Oxalophagus
Genus VII Thermobacillus
Family V Pasteuriaceae
Genus I Pasteuria
Family VI Planococcaceae
Genus I Planococcus
Genus II Caryophanon
Genus III Filibacter
Genus IV Jeotgalibacillus
Genus V Kurthia
Genus VI Marinibacillus
Genus VII Planomicrobium
Genus VIII Sporosarcina
Genus IX Ureibacillus
Family VII “Sporolactobacillaceae” 
Genus I Sporolactobacillus
Family VIII “Staphylococcaceae
Genus I Staphylococcus
Genus II Jeotigalicoccus
Genus III Macrococcus
Genus IV Salinicoccus
Family IX “Thermoactinomycetaceae
Genus I Thermoactinomyces
Genus II Laceyella
Genus III Mechercharimyces
Genus IV Planifi lum
Genus V Seinonella
Genus VI Shimazuella
Genus VII Thermofl avimicrobium
Family X Incertae Sedis
Genus I Thermicanus
Family XI Incertae Sedis
Genus I Gemella
Family XII Incertae Sedis
Genus I Exiguobacterium
Order II “Lactobacillales
Family I Lactobacillaceae
Genus I Lactobacillus
Genus II Paralactobacillus
Genus III Pediococcus
Family II “Aerococcaceae” 
Genus I Aerococcus
Genus II Abiotrophia
Genus III Dolosicoccus
Genus IV Eremococcus
Genus V Facklamia
Genus VI Globicatella
Genus VII Ignavigranum
Family III “Carnobacteriaceae
Genus I Carnobacterium
Genus II Alkalibacterium
Genus III Allofustis
Genus IV Alloiococcus
Genus V Atopobacter
Genus VI Atopococcus
Genus VII Atopostipes
Genus VIII Desemzia
Genus IX Dolosigranulum
Genus X Granulicatella
Genus XI Isobaculum
Genus XII Marinilactibacillus
Genus XIII Trichococcus
Family IV “Enterococcaceae
Genus I Enterococcus
Genus II Melissococcus
Genus III Tetragenococcus
Genus IV Vagococcus
Family V “Leuconostocaceae
Genus I Leuconostoc
Genus II Oenococcus
Genus III Weissella
Family VI Streptococcaceae
Genus I Streptococcus
Genus II Lactococcus
Genus III Lactovum
Class II “Clostridia”
Order I Clostridiales
Family I Clostridiaceae
Genus I Clostridium
Genus II Alkaliphilus
Genus III Anaerobacter
Genus IV Anoxynatronum
Genus V Caloramator
Genus VI Caloranaerobacter
Genus VII Caminicella
Genus VIII Natronincola
Genus IX Oxobacter
Genus X Sarcina
Genus XI Thermobrachium
Genus XII Thermohalobacter
Genus XIII Tindallia
Family II “Eubacteriaceae
Genus I Eubacterium
Genus II Acetobacterium
Genus III Alkalibacter
Genus IV Anaerofustis
Genus V Garciella
Genus VI Pseudoramibacter
Family III “Gracilibacteraceae
Genus I Gracilibacter
Family IV “Heliobacteriaceae
Genus I Heliobacterium
Genus II Heliobacillus
Genus III Heliophilum
Genus IV Heliorestis
Family V “Lachnospiraceae” 
Genus I Lachnospira
Genus II Acetitomaculum
Genus III Anaerostipes
Genus IV Bryantella
Genus V Butyrivibrio
Genus VI Catonella
Genus VII Coprococcus
Genus VIII Dorea
Genus IX Hespellia
Genus X Johnsonella
Genus XI Lachnobacterium
Genus XII Moryella
Genus XIII Oribacterium
Genus XIV Parasporobacterium
Genus XV Pseudobutyrivibrio
Genus XVI Roseburia
Genus XVII Shuttleworthia
Genus XVIII Sporobacterium
Genus XIX Syntrophococcus
Family VI Peptococcaceae
Genus I Peptococcus
Genus II Cryptanaerobacter
Genus III Dehalobacter
Genus IV Desulfi tobacterium
Genus V Desulfonispora
Genus VI Desulfosporosinus
Genus VII Desulfotomaculum
Genus VIII Pelotomaculum  
Genus IX Sporotomaculum
Genus X Syntrophobotulus
Genus XI Thermincola                      
ziaFamily VII “Peptostreptococcaceae”