Order Xanthomonadales

Family Sinobacteraceae
Hydrocarboniphaga - Nevskia - Sinobacter

Family Xanthomonadaceae
Alkanibacter - Aquimonas - Arenimonas - Aspromonas - Dokdonella - Dyella - Frateuria - Fulvimonas - Ignatzschineria - Luteibacter - Luteimonas - Lysobacter - Pseudoxanthomonas - Rhodanobacter - Silanimonas - Singularimonas - Stenotrophomonas - Thermomonas - Wohlfahrtiimonas - Xanthomonas - Xylella

Unclassified Gammaproteobacteria Alkalimonas - Methylohalomonas - Methylonatrum - Sedimenticola - Simiduia - Solimonas - Spongiibacter - Steroidobacter - Thiohalomonas - Thiohalophilus

Phylum "Spirochaetes" or "Spirochaetae"

Class Spirochaetes

Order Spirochaetales

Family "Brachyspiraceae"
Brachyspira - Serpulina

Family "Brevinemataceae"
Brevinema

Family Leptospiraceae
Leptonema - Leptospira - Turneriella

Family Spirochaetaceae
Borrelia - Clevelandina - Cristispira - Diplocalyx - Hollandina - Pillotina - Spirochaeta - Treponema

Unclassified Spirochaetales Exilispira

Phylum "Synergistetes"

Aminiphilus - Aminobacterium - Aminomonas - Anaerobaculum - Cloacibacillus - Dethiosulfovibrio - Jonquetella - Synergistes - Thermanaerovibrio - Thermovirga

Phylum "Tenericutes"

Class Mollicutes (In the next edition of the Bergey's Manual of Systematic Bacteriology, the class Mollicutes will be excluded from the phylum " Firmicutes " and classified in the phylum " Tenericutes " - Reference: K.H. Schleifer and W. Ludwig, personal communication)

Order Acholeplasmatales

Family Acholeplasmataceae
Acholeplasma

Order Anaeroplasmatales

Family Anaeroplasmataceae
Anaeroplasma - Asteroleplasma

Order Entomoplasmatales

Family Entomoplasmataceae
Entomoplasma - Mesoplasma