Deltaproteobacteria

Desulfovibrio vulgaris

Epsilonproteobacteria

Nitratiruptor sp. SB155-2

Gammaproteobacteria

Magnetococcus

Spirochaetes

Spirochaetales

Tenericutes

Mollicutes

Thermotogae

Thermotogales

Fervidobacterium nodosum

Verrucomicrobia

Methylacidiphilales

Opitutae

Verrucomicrobiae